Common Fireplace Terms

wood burning fireplace

Many homeowners the Washington DC Metro area want to enjoy the increased value and comfort from having a fireplace installed.  Unfortunately, the wide selection of fireplace options available today, can make this a confusing process.  One of the sources of this confusion is understanding fireplace terms.   It is hard to make the right fireplace decision if you do not know understand the terms that are being used by your fireplace supplier and installer.

Local fireplace and chimney installation companies like ours will help you select the best products for your particular installation. This guide will help you find a quick definition to many of the terms that are frequently used by installers. This guide will give you a clear understanding of common fireplace terms but will not cover chimney repair terms that were covered in our previous article concerning chimney repair terms.

Fireplace Terms from A to Z

AFUE — Annual Fuel Utilization Efficiency, a measurement used for rating wall heaters and furnaces as an official heat source.

Ash Pan — A metal tray designed to catch and hold ashes falling from solid fuel fires for easier cleaning of the fireplace.

Air Vent — A small vent in the wall sometimes needed for gas fireplaces.

Agean Limestone — limestone from the Agean region of the Mediterranean, highly valued for its density and often used in fireplaces and surrounds.

Andiron/Bars/Dogs/Firedogs — decorative iron bars that hold logs or coal and help air flow to the  fire.

B Vent/Natural Draft Appliance — a system without a sealed combustion chamber that uses a single wall flue to vent.

Bellows — a device for blowing a controlled blast of air to stoke a fire.

Blue Flame Rectification — safety shut-off controlling and maintaining gas flow.

BTU — British Thermal Unit, used to measure heat.

Builders Opening — the precisely measured hole in the wall or chimney breast where the fireplace will go.

Burner — device containing orifice, mixing tube, and burner head where gas and air can safely combust.

Burner Ports — holes in a gas burner where gas/air comes out.

Carbon Dioxide — gas produced by complete combustion.

Catalytic Combuster — a device used to reduce the temperature at which smoke is ignited.

Casting/Cast Iron/Brass/Steel — the process where molten iron, brass, or steel is poured into a mold to produce solid pieces.

Chenet — one-piece unit to hold logs similar to an andiron, connected by a fender across the front, commonly just inside the firebox.

Clearview — fireplace with glass doors for viewing flames.

Combination Fireplace — unit with attached shelf needing no separate surround.

Carrara Marble — popular marble prized for its natural veining.

Carbon Monoxide — the poisonous gas product of incompletely burning fuels that should be safely vented in all installations by a certified professional.

Clearance — the measured space required by law to keep combustible surfaces a safe distance from fireplaces and other heat-producing units.

Ceramic Fiber Back — lightweight fireback used in tiled gas fireplaces to reflect heat into the room.

Decorative Gas Fire — appliance with living flame used for decorative purposes rather than heating.

Electric Insert — used where there is no chimney to simulate a heat-producing fire of coal or wood.

Electronic Ignition — installed electronic device for lighting a fire.

Emissions — by-products of combustion.

EPA Regulations — federal rules mandating emissions from wood burning appliances.

Fender — the low metal guard at the front of an open fireplace that keeps the burning logs or coal from falling into the room.

Fire Back/Fireback — the panel at the back of the fireplace designed to reflect heat into the room and protect the firebrick in the chimney.

Fireplace Insert — a unit designed to fit behind pre-built surround used with solid fuel, gas, or electric.

Fire Basket — a free standing device holding burning solid fuel.

Fire Box/Firebox — space where the fire actually burns.

Fire Stops — noncombustible devices sealing openings between floors to stop smoke & fire from spreading.

Fireguard/Firescreen — device preventing sparks from escaping fireplace and young children from reaching fire.

Fireplace Surround — decorative material (wood, brick, stone, tile, etc.) on the wall around the fireplace opening.

Free Standing Fireplace/Stove — compact appliance that sits away from the wall, normally on legs or a pedestal.  

Front-view Fireplace — traditional fireplace built into the wall.

Gas Cock Assembly/Valve Control — combination valve controlling supply of gas to the fireplace.

Gas Insert — a gas-burning unit installed into an existing fireplace. This is a popular option for gas fireplace installation

Gas Log — simulated logs and frame creating an open gas flame in a fireplace.

Glass Doors — a device used to close the opening of the hearth and keep heat from escaping through the chimney.

Grate — cast iron or steel frame holding the burning fuel.

Grate Polish/Black Lead/Zebo — traditional polish used on cast iron stoves and fireplaces.

Hearth — traditionally refers to the floor of the fireplace and non-combustible shelf in front of it but now also refers to all devices and equipment connected to the fireplace/stove industry.

Kindling — small pieces of dry wood that easily ignite to start a fire.

LP/LPG — Liquified Petroleum Gas, separated from wet natural gas, light crude oil, and oil-refinery gas into a colorless, odorless, non-toxic gas.

Manifold Pressure — amount of wc inches supported by various types of gas.

Mantel — Shelf above the fireplace or ornamental facing surrounding the opening.  Many people like to decorate their mantels

Multi-fuel — appliances designed to burn a variety of fuels.

Multi-view — fireplace offering multiple sides for viewing the fire.

NG/Natural Gas — colorless, highly flammable gas with high energy value.

Oxygen Depletion Sensors — safety devices detecting dangerous lack of oxygen, triggering shut off of appliance.

Pellets — man-made solid fuel designed for specific appliances.  Pellets are ofen used in pellet stoves.  

Piezo Starter — red button placing pressure on the crystal of a standing pilot system.

Pilot — small flame used to ignite gas at the burner.

Propane — a type of petroleum gas (LPG) in liquid form, also can be found in gas or vapor form.

PSI — pounds per square inch

Safety Pilot/Standing Pilot System — a safety device stopping the flow of gas to the appliance until needed and providing a small flame to ignite the main burner.

Seasoned Wood — fuel wood that has dried 6-12 months for optimum use.

Simulated Embers — a non-combustible decorative feature that looks like burning coals.

Solid Fuel — wood, coal, or pellet fuel that must be used in a unit designed for the particular fuel.

Spark Arrestor — a screen in front of the fireplace opening that keeps sparks inside, also the mesh placed on top of the chimney for the same purpose.

Spillage — dangerous backup of flue gasses into the building.

Spill Switch — a device used to detect spillage of flue gas.

Therm — a unit of heating value equal to 100,000 BTUs.

Thermo Sensor — automatic control of blower based on temperature.

Unvented/Vent Free — an appliance theoretically designed to burn so efficiently it needs no venting.

Wall Thermostat — electrical switch with sensors to maintain temperature by turning heat sources on or off.

WC/Water Column — unit of measurement of gas pressure: 28 wcs are in one pound of PSI..

When you are selecting a new fireplace for your home, be sure you understand what the salesman and installers are talking about. This list should help, but when in doubt, ask for an explanation of any term that is confusing. A professional in the fireplace industry should be able to answer all your questions before you decide which fireplace is best for you and your family. 

 

 

 

11 Signs That You Need Chimney Repairs

damaged chimney

As a homeowner, you do everything you can to protect your home from needing costly repairs, including regular maintenance. However, if your home has a chimney and you’re not scheduling professional chimney inspections at least once a year, you could be setting yourself up for expensive repairs down the road.  Fortunately, homeowners can get chimney repairs in Washington DC fairly easily.   It’s not too late to begin scheduling chimney inspections and cleanings.   In between professional inspections, it’s always a good idea to keep an eye out for some common signs of chimney problems. The earlier a chimney problem is discovered, the easier and more affordable the repair will be.

  1. Chimney Fire

Perhaps the most serious and obvious sign that your chimney needs some work is that of a chimney fire, which can be a scary situation for any homeowner to encounter.  Specifically, chimney fires occur when creosote along the interior of the chimney is ignited by a flame. This highly flammable material builds up over time and can be easily removed with a professional chimney cleaning. Unfortunately, many homeowners fail to have this basic maintenance done each year, drastically increasing the chances of a chimney fire. When a chimney fire ignites, you may notice a very loud cracking or popping sound coming from the chimney, as well as thick smoke. It is important to evacuate your home immediately and call 9-1-1 to have the fire put out safely.

  1. Excessive Smoke

Even if you’re not experiencing an actual chimney fire, you may still notice large amounts of smoke when you use your fireplace. Excessive smoke coming from your chimney could be a sign of a liner that’s in need of repair or replacement. Check to make sure that your chimney vent is open; if it is and you’re still experiencing a lot of smoke, then you will need to call a chimney repair company as soon as possible. In the meantime, stop using your fireplace, as smoke can be damaging to your lungs and other aspects of your health.

  1. Ceiling and/or Wall Stains

If you notice any staining or discoloration on the walls or ceiling around your fireplace/chimney, this will also need to be investigated by a chimney repair specialist like us. There’s a good chance that the discoloration you’re seeing is due to moisture getting into your chimney and gradually seeping into your home. Over time, this can be very damaging, especially if the water damage reaches the framing of your home and begins to rot it out. Moisture getting into your home through the chimney can also lead to mold and mildew problems that can hide behind walls, so be sure to have your home checked for these issues. It’s always better to be safe than sorry.

  1. Flaking Chimney Liner

Another relatively common chimney problem that you’ll want to address is that of shards or flakes of your chimney liner falling down into your fireplace. This is known as “shaling” and occurs when the liner of your chimney deteriorates over time. In some cases, this is simply as a result of wear and tear, meaning that your liner will need to be replaced or repaired by a professional. In other cases, an underlying problem with your chimney could be to blame. Either way, your chimney’s liner plays an important role in protecting your home and your health, so this is not a problem that you’ll want to ignore.

  1. Chimney Crown Cracks

The “crown” that surrounds the exterior of your home’s chimney is made of cement and is designed to help keep out moisture and debris. Over time, exposure to the elements (especially precipitation and fluctuating temperatures) can cause small cracks to form along the chimney crown. Eventually, these cracks will allow water and other debris to enter your home, which you definitely don’t want. Unfortunately, the chimney crown can be difficult (and sometimes impossible) to see from ground level, which is why scheduling annual inspections on your chimney is so important. Small cracks can be easily patched and repaired by a specialist before the problem worsens.  You will find it helpful to read our recent article about a chimney crown repair project.

  1. Missing or Damaged Chimney Cap

All chimneys should have a metal or aluminum cover that is designed to prevent rain, debris, pests, and other unwanted items from entering your home through the chimney itself. These caps are designed with ventilation holes or flaps to allow smoke to exit the home effectively while keeping unwanted items out. Over time, however, these covers can become damaged by the elements and will need to be replaced. Rust and corrosion are common problems in chimney covers, especially in areas with high rainfall. Fortunately, these are easy to replace by an experienced chimney professional.

  1. Pests Getting Into Your Home

While a pest infestation in your home isn’t always necessarily caused by a chimney issue, it’s a possibility you’ll want to consider if you’re experiencing insects or rodents getting into your home. Sometimes, this can occur when a damaged or missing chimney cover allows access through your chimney. This could especially be the case if you’re noticing that the pests getting into your home tend to be found mostly in the room where your fireplace is located. Of course, pets can also be getting in through your garage, attic, or other areas of the home, so it may also be a good idea to call a pest control specialist if you’re having trouble figuring out where the pests in your home are coming from.

  1. Visible Settling of Chimney

From the outside of your home, take a look at your chimney. Does it appear straight and sturdy? If not, then it may be time to call a repair specialist. Over time, the brick and mortar joints that make up the exterior of your home’s chimney can become damaged by the elements, especially when moisture is present. This can cause cracking and crumbling of the chimney itself, which can become dangerous if it becomes too progressed and compromises the structural integrity of the chimney. This is another scenario where it’s wise to have a chimney inspection every year, as an inspector will be able to notice cracks and other damage to your chimney that you may not be able to see yourself.

  1. White Stains on Chimney Exterior

You may not think much of white staining on the exterior of your chimney, but this is actually something that indicates the need for repair. This staining often has a chalk-like appearance and is known as “efflorescence.” It usually occurs in chimneys where there is excessive moisture beginning to affect the brick and mortar joints themselves and is not uncommon in chimneys that have begun to lean or crumble. If you see any white staining on your chimney, be sure to call a professional as soon as possible.

  1. A Rusted Damper

Your chimney relies on a firebox or damper to protect itself (and your home) from moisture. Therefore, if you notice that your damper has become difficult to operate or if you can see visible rust beginning to form on it, this needs to be addressed by a chimney repair specialist right away. Specifically, rust and/or corrosion of the damper is a sign of a moisture problem that will not go away on its own and can lead to serious water damage inside your home if not repaired quickly.

  1. Framing Rot in Your Home

Finally, always keep an eye on the ceilings and walls around your chimney and fireplace. If you begin to notice any bowing inwards or outwards of the drywall, this could be a sign of water getting into your home and rotting out the wooden framing on the affected wall. As the rot takes over the wood framing, it will begin to buckle and the wall or ceiling will begin to lose some of its structural integrity. A chimney repair specialist will be able to pinpoint not only where the water is getting in from the chimney, but how to repair it as well. However, you will most likely need to have a general contractor come out and rebuild the damaged wall framing as well as install new drywall to complete the repair.

As you can see, there are a number of possible “red flags” to watch out for when it comes to your home’s chimney. The good news is that many of these signs are early warnings of underlying issues, meaning they can be addressed and repaired relatively easily. Still, when you notice any potential signs of a chimney problem, it’s important to make calling a repair specialist a top priority. Otherwise, you could be setting yourself up for more costly repairs down the road in addition to potential damage to your home from moisture seepage, smoke build-up, and other issues.

Common causes of chimney leaks..and what to do about it

 leaking chimney crown

Many homeowners don’t realize that their chimney requires regular maintenance in the form of inspections and cleanings. Usually, these homeowners are blissfully unaware of the importance of chimney maintenance until they end up with a chimney leak.  Periodic heavy rains often result in the need for chimney repairs in Washington DC homes.   These leaks can be quite damaging and costly if not caught early, which is why it’s good for all homeowners to be aware of the most common causes of chimney leaks, how to avoid them, and what to do in the event of a leak.

Common Causes of Chimney Leaks

A chimney leak occurs when water is allowed to bypass the liner of the chimney and find its way into your home. The resulting water damage can be expensive to repair, especially if it has been going on for a long time and has reached the wood framing of your home’s walls. Take a moment to become familiar with these common causes of chimney leaks. From there, you can take steps to avoid them in your own home.

Cracked Chimney Crown

A chimney crown refers to the cement part that runs along the top of a chimney and wraps around the vent. Crowns are very effective at keeping moisture away until they begin to chip and crack, which is inevitable over time. When cracks form in the chimney crown, water can gradually begin to make its way down the chimney flue and directly into your home.

Not all chimneys have crowns (some has covers, as will be explained in the next section). However, if your chimney has a crown, it’s a good idea to inspect it at least once a year for cracks and chips. If you live in an area that sees all four seasons, the best time to inspect is during the spring, as water freezes and thaws in even tiny cracks during the winter months.  

Small cracks can occasionally be caulked and patched, though more extensive damage may call for a total replacement of the crown by an experienced chimney repair company.  The best chimney repair companies use floating cast crowns. 

Lack of Chimney Cover

For chimneys that don’t have a cement crown, there should be a chimney cover in place. These covers are usually made of metal or aluminum and are placed directly on top of the chimney vent with a tight fit around the vent itself. These covers prevent rain and other precipitation (not to mention pests) from traveling straight down into your chimney but have ventilation built into the sides to allow proper ventilation (especially while you’re using your fireplace). 

Unfortunately, chimney covers can go missing or deteriorate over time. This is especially common in older covers that are made of metal, which can rust and corrode. The good news is that replacing a missing cover is relatively simple and inexpensive when done by a reputable chimney repair company.

Cracks in Brick and Mortar

Chimneys are usually constructed of brick that is held together by mortar, and these are very durable materials. Still, over time, the cement holding the brick and mortar together can crack and crumble (just as it can on chimney crowns). When this occurs on the chimney structure itself, water can penetrate the chimney and gradually, the structural integrity of the chimney can even be lost. If you can see cracks or “wavy” areas of your home’s chimney, there’s a good chance that this type of leak is already happening. Because brick is a naturally porous material, it’s not a matter of “if” brick will eventually give way to cracking and crumbling, but “when.”

Applying a special brick sealant to the chimney is a temporary way to stop water from entering your home, but eventually, a long-term solution will need to be done by a chimney repair service.

Bad Roof Flashing

Finally, perhaps the most common cause of chimney leaks in residential buildings is that of bad roof flashing. When roofing is installed on a home with a chimney, a waterproof material known as flashing is installed around the chimney before the roofing shingles are put on top. Unfortunately, poor installation or even deterioration over time can render flashing ineffective. There are several things that can cause chimney flashing to leak.  Find out more here. 

When this occurs, water can seep into the chimney flue right around the base of the chimney where it meets the roof of the home. This is a repair that can be completed by a roofing or chimney company, as new flashing will need to be installed.

Telltale Signs of Chimney Leaks

The best way to avoid chimney leaks is to have your chimney inspected at least once a year for the most common causes. Still, in between inspections, there are some “red flags” homeowners should watch out for that could indicate the start of a leak in the home.

Peeling Paint or Wallpaper

One of the most common signs of a chimney leak is that of peeling paint or wallpaper inside the home near the chimney flue itself. Homeowners may notice peeling or bubbling paint around a home’s fireplace, which is likely caused by moisture inside the flue. If you have wallpaper on the walls near your fireplace, you may also notice it beginning to bubble or peel, especially at points where two pieces of wallpaper come together.

Spots of Discoloration

Before the paint starts to peel, you may also notice odd, discolored spots on ceilings or walls near a chimney flue in the home. On a white ceiling or wall, these spots will appear yellow or tan. They will darken over time as water damage becomes more widespread and serious.

Chimney Settlement or Collapse

While getting up on top of your roof and inspecting your chimney yourself may not be advised, you can conduct a quick visual inspection of your chimney from the ground in most cases. If your chimney appears to be tilting to one side, warped, or visibly settling, you’re most likely going to have water leaking into your home.

Wood and Framing Rot

When water damage inside the home progresses, you could even end up with more serious structural issues, including rotting out of the wood that makes up your home’s framing. The most obvious sign of rotted framing will be bulging or warped drywall, but only ripping out the drywall and inspecting the framing underneath will determine the extent of the damage. In some cases, mold or mildew will also become an issue in the home when this occurs.

While these are the most common signs of a leaking chimney, some other possible signs to be on the lookout for include:

  • rusted fireplace components
  • corrosion of damper assemblies
  • stains on chimney exterior

It is important to act quickly when you see signs of a chimney leak, as water damage can spread in the blink of an eye.

What to Do if You Have a Chimney Leak

If you notice any signs of a chimney leak, the only course of action is to contact a professional chimney repair company. Chimney leaks are not something you can repair on your own, and of course, climbing onto your roof can be dangerous. When you call a professional chimney repair company that meets professional standards like these, you can have the peace of mind that the problem will be fixed.  The water leaks will stop and future water damage will be prevented. 

A chimney repair specialist will be able to determine the cause of your leak and advise you on how any water damage inside your home should be repaired. Some repairs that a chimney repair company may be able to assist with include:

  • chimney crown repair or replacement
  • chimney cover repair or replacement
  • repair of brick and mortar cracks
  • replacement of chimney liners
  • replacement of flashing around the chimney

Furthermore, a professional chimney service will be able to advise you on additional services to protect your home, chimney, and fireplace. For example, many companies offer chimney fireproofing, which involves the sealing of the chimney structure itself to make it less susceptible to damage from water, such as cracking and crumbling. A special sealant must be used to fireproof the chimney, as it is necessary for the sealant not only to keep water from getting in but for continuing to allow gasses to escape. In other words, the sealant must allow the brick to retain its porous structure to gasses but not to water. Waterproofing a chimney is a complex task that should only be done by an experienced professional.

There are so many different problems that can lead to a disastrous water leak in your chimney, but the good news is that they’re all 100% preventative with just a little maintenance and care. Be sure to have your chimney and fireplace inspected by a professional at least once a year, and you’ll be able to avoid many of these issues. Furthermore, if you ever spot signs of a chimney leak, don’t hesitate to call a chimney repair service to get things under control before the leak causes widespread and costly damage to your home.

Gas Fireplace Installation Guide

gas fireplace installation guide

More and more homeowners in the Washington DC Metro Area are requesting our services to have a gas fireplace installed.  A gas fireplace is a great investment for your home. It brings immediate charm and utility to a room in the form of attractive flames and warmth. It doesn’t need the labor of wood burning because it can simply be turned on. No cutting and storing wood, no cleaning up after a wood fire. Gas fireplaces add to the resale value of the home if installed correctly.  Fortunately, you can gas fireplaces can even be installed in homes that do not have a chimney.

Gas fireplaces have many benefits.  Gas fireplaces are amazing, but it should never be approached as a DIY project. It takes an expert to know which models will be best for the location, how to get the fuel (natural gas or propane) safely to the appliance, and what to do about the combustion gas that those attractive flames produce.  Even though gas fireplaces should be installed by professionals, it is important for homeowners to understand what is involved in installing a gas fireplace. Here is all of the basic info a homeowner will need to make an educated decision about their gas fireplace installation. 

How Gas Fireplaces Are Installed

  • Once the location and model of the gas fireplace are decided, the mechanics of installation come into play:
  • Permits must be obtained & inspections planned for
  • Building codes & the appliance manual must be checked for clearance requirements
  • Gas supply lines must be laid properly
  • Electrical circuits must be run if necessary
  • Venting must be planned according to specific requirements

Key points to look for in venting requirements are found in your municipality’s building codes and the manufacturer’s installation manual. These points include things like:

  • Distance the vent’s cap must be kept from windows, doors, corners, etc. are required because the gas being exhausted shouldn’t drift back inside
  • Number of bends in the vent pipes and ratio of vertical/horizontal lengths affect the passage of combustion gas
  • Distance from combustibles like insulation or framing might require heat shielding for fire safety

Once the gas, venting, and any electrical lines are in place, most localities require an inspection before the installation can continue. After approval, the process continues:

  • Fireplace platform is built and put into place, making sure it is level
  • Venting is sealed to the outside of the house and capped if not done previously
  • Electric and gas lines are attached and checked for safety
  • Clearances are double-checked before building in the unit

The homeowner decides how the surround of the new gas fireplace will look. Some people like a traditional fireplace look with a mantel. Others like a sleek modern wall with no protruding shelf. There are many ways to finish off this project once the basic gas fireplace is professionally installed. Most installers will include this step in their process. Be sure to take a moment to read this article detailing a  gas fireplace installation that we recently completed. 

What To Look For In An Installer

It’s a good idea to do some research before picking someone to install your gas fireplace. If the provider of the unit also does installations, that is a good place to start. Look for these things:

  • Check their website and see what previous jobs look like
  • Look for credentials like BBB (Better Business Bureau) ratings and reviews from locals
  • Look for NFI and CSIA certifications
  • See if they offer a free consultation for the project
  • Ask for clear terms in the project proposal and make sure you understand everything

There are strict standards for both NFI and CSIA certifications. NFI is the National Fireplace Institute and indicates competence in these areas:

  • Compliance with code regulations and manufacturer instructions
  • Familiar with size, type, and features of various hearth appliances
  • Use of proper materials for heat protection of walls and floors
  • Aware of requirements for size, type, configuration, and height of venting system
  • Able to select proper fuel 
  • Familiar with the guidelines for operation and maintenance of the hearth system

Someone with NFI certification will have an ID card in their wallet and should be a knowledgeable professional able to answer your questions and make recommendations for a safe gas fireplace installed in your preferred location.

CSIA is the Chimney Safety Institute of America. Certification from CSIA indicates the professional is qualified to safely maintain chimneys. If your gas fireplace installation will be utilizing an existing chimney, make sure there is a CSIA certified professional involved.

You can find additional tips for hiring an installer here.

Frequently Asked Questions About Gas Fireplace Installation

  • Will this gas fireplace work in a power outage? A standing pilot system is self-contained and will work even when there is no electricity. An electronic system will need to have dedicated wiring in place and will not work without electricity.
  • Can I just use my existing chimney? Maybe. Modern appliances need modernized chimneys or incomplete combustion and/or water condensation will cause corrosion problems. A CSIA-certified installer will be able to assess your chimney and tell you what will be needed to make it useable.  In many cases a gas fireplace insert can be installed in an existing fireplace opening. 
  • I don’t have a chimney, is this going to be a problem? No. There are many modern gas fireplaces that do not need a traditional chimney.  In fact, the flexibility of location means a gas fireplace can enhance almost any room in the house.
  • Does the need for a vent limit location of a gas fireplace? A qualified installer can be amazingly creative in designing venting options for a challenging location because the installer is familiar with the building codes and the safety factors in venting different models. Ask about the possibilities and ask for estimates on cost because simpler installations will take less time.
  • Can I go with a ventless gas fireplace? These fireplaces are designed to “safely” put combustion gasses and moisture back into the room where they are being used. They are illegal in many communities because of the potential safety hazards. If a licensed installer has deemed it impossible to use any other type of installation, make sure it is legal in your location and your home insurance company allows it. Be aware that it could affect the resale value of your home because potential buyers may be wary of ventless installations.
  • Will I like the location of my gas fireplace in real life? A good way to judge whether a gas fireplace will be where you want it is to make a cardboard box the same size as the potential fireplace and place it exactly where you are thinking it will go. This way you can move it around if you don’t like the original plan, but keep installation requirements like building codes, venting, and gas lines in mind.
  • How much will it cost to use a gas fireplace? National averages put the cost of a gas fireplace using 27,000 BTUs per hour will cost between 12-15 cents each hour but it’s a good idea to check the rates for your particular fireplace model and your area’s energy rates. Most homeowners report a reduction of fuel consumption and lower energy bills after installing a gas fireplace.
  • Can I control the heat output of a gas fireplace? Some styles will use fans to push heat into the room or the home’s heat circulation system if desired (but not in a power outage). If this is a feature you want in your gas fireplace, choose a model that has the ability to control how much heat comes into the room. Many have thermostats that can be set for temperature control.
  • Do I need a permit to install a gas fireplace? Probably. Since installing a gas fireplace involves things that affect safety, most municipalities insist on permits and installation by professionals. Most home insurance companies do, too. 
  • How much maintenance does a gas fireplace need? Most professional installers also offer maintenance because yearly inspections and cleanings are essential for continued safe operation. Follow the manual’s guidelines for your particular model and select an installer who will also provide this service.

A gas fireplace is a great addition to your home. There are many options to explore and the perfect gas fireplace is worth taking the time to find the best choice for your particular location and an installer you can trust.   Be sure to visit our gas fireplace installation services page to learn more about what we have to offer.

Ultimate Chimney Repair Term Guide

chimney repair terms

While interviewing chimney repair companies, many homeowners found themselves lost in a sea of technical chimney terms.  The chimney repair technicians use words like flue liners, corbelling and creosote as if homeowners use those words every day.  That fact is that no one but chimney repair techs uses those words.  Homeowners in the Washington DC Area tend to be smart people.  However, even the highest levels of education do not teach about chimneys. When providing services like ours, we do our best to share information using terms that are easy for homeowners to understand.  We have created this article to provide homeowners with all of the terms that they will likely need to make sense of the what the chimney repair tech is telling them.  Just take the time to read and digest each of them, and you will find yourself talking like a pro…or at least understand what they are saying. 

Chimney Repair Terms

Chimney

The chimney is the set of passageways to the exit points for flue gases. The chimney links the points of combustion to the exit point. So, flue gases from combustion get to the atmosphere through the chimney.

Ash pit

This is where ashes are stored. It is usually located at the base of the chimney. It is simply a pit where ashes are stored temporarily before being disposed of.

Baffle

This is an object that is fixed in any appliance to change airflow direction. The baffle also changes the direction of flue gases and also slows down air-fuel mixtures.

Chase

Chase is the area that surrounds metal flue pipes. It is used to stimulate a chimney. There are several variants of chase. Some variants are made of steel while some are made of wood. The external covering of chase made of either stucco or lathe.

Chimney Cap

Chimneys are installed vertically or almost vertically so that the exit point will be facing the sky. So, it is possible for rain, dust particles or snow to enter the chimney to through its opening. It is even possible for animals to get into a home through the chimney when not in use. This is why it is important for chimneys to have a protective cover to prevent the entry of animals, rain, snow and dust particles. The protective covering is the chimney cap.  You may want to read this article to learn more about replacing chimney caps.

Chimney Cleaning and Chimney Sweep

This term is easy to understand. It is exactly what you are thinking. Chimney cleaning is the process of cleaning the chimney. It is as simple as that. Soot, debris, and creosote usually gather in the chimney, and they can block the airflow when they become too much. In fact, the moment they start gathering there, the flow of air will no longer be seamless. So, the chimney has to be cleaned regularly for efficient performance.

Besides, it should be cleaned for safety reasons too. When soot and creosote encounter real heat, they can ignite resulting in house fires. The worker whose responsibility is to clean the chimney regularly is the Chimney Sweep. Learn more about our chimney sweep services here.

Chimney Connector

This is any of the pipes that connect the chimney to any fuel-burning device or appliance. They are usually more than one.

Chimney Liner

The flue system allows smoke and gas to travel from your fireplace up your chimney and away from your home.  The flue liner is the material that is used within the system.  Flue liners are commonly comprised of Terracotta made from clay. 

Corbelling

Corbelling is what happens when bricks are stacked on top of each other and are projecting outwards. This is often seen in the smoke chamber resulting in increased creosote build up that can result in chimney fires.

Creosote

These are highly flammable dark, tar-like deposits that form when products of combustion (smoke, gas, etc) fail to escape from the flue.  Instead of exiting the flue, they cool and form creosote. Creosote build up within the smoke chamber or flue is a common cause of house fires. 

Cricket

This is also known as a saddle. This is a long ridge that links the back of the chimney to the slope of the roof. The cricket is required when the chimney is 30″ or wider. Its purpose is to ward water off the main connection between the chimney and the roof.

Chimney Crown

A concrete surface that sits on the top surface of the chimney that sheds water away from the flue liner. There are several types f chimney crowns. 

Below are links to our 3 part series about chimney crowns

Part 1     Part 2    Part 3

CSIA

This abbreviation stands for Chimney Safety Institute of America. The organization is a non-profit making and tax-exempt organization established to regulate chimney and vent related activities in the United States. It is dedicated to venting and chimney system safety.

Damper

This is a valve that comes mostly in the form of a retractable plate. It is simply meant for controlling the flow of smoke or air or both. Most times it is located at the top of the chimney. It opens the top of the flue when the chimney is in use and it closes it when idle. This prevents cold air from coming in and it also prevents warm air that is keeping the house warm from flowing out through the flue.it is the cable attached to the side of the flue that opens and closes the flue.

Direct Vent

Direct vent” refers to a sealed-combustion system in which air for combustion is piped from the outdoors, and the event products are vented to the outdoors. (Got this from an online definition)

Draft

The draft is the pressure difference created by a rising gas. The pressure difference draws combustion air into the appliance and discharges exhaust gases to the atmosphere via the chimney

Chimney Flashing

Are metal strips at the base of the chimney as it penetrates the roof. There are two parts.

1- Base or step flashing, butts up against the chimney and is tucked underneath the shingles.

2- Counter flashing- over laps the base flashing and is tucked into the mortar bed joints of the chimney.

Flue

This is the link between the chimney and the exit point for gases. The gases from combustion pass from the chimney via the flue to the outside atmosphere. A multi-flue chimney is a single chimney that contains more than one flue.

Flue Liner

This is the inner wall of the flue. It is designed to hold products of combustion. It is done in adherence to the safety rules guiding the installation of chimneys.

Masonry Chimney

This is a chimney made of cement, concrete, stones, bricks or a combination of some of them.

Parging

This is a coat of mortar applied to a surface to smooth it out. Parging is often done in the smoke chamber to correct the corbelling bricks.  Some technicians use spray on substances to apply a thin coat to parge the smoke chamber.  This spray on technique does not last long.  The better chimney repair companies parge the chamber by applying thick coats by hand. 

Relining

Relining a chimney is the process of repairing/replacing damaged or faulty flue liners. It is the replacement of the flue liner.

Stainless Steel Liner

It is the stainless steel pipe used to replace a damaged liner in a chimney.

Soot

This can be described as carbon particle residue that is formed from oxygen-poor combustion. It resides inside the chimney until it is swept out. This is a regular occurrence. This is why chimneys should be cleaned regularly.

Stack Effect

This is the tendency of warmer air to rise within a chimney leaving cooler air at the base known as the stack effect. This is because air is lighter when warm or hot and heavier when cold.

Thermal Expansion

Thermal expansion is the expansion of the metal surfaces of the chimney caused an by an increase in temperature. This does not only happen in the chimney. It also happens everywhere else. Heat makes metals expand.

Thimble

This could be fixed/permanent or removable. It is the ring situated in the hole where the chimney is connected to the wall. The chimney connector passes through the thimble.

Vent

valuable is passage that links the flue collar to the draft hood.

Video Scan

This is not such a technical term. It is video camera and monitor that is installed to inspect the innermost part of the flues that are difficult to access.

Counter Flashing

This is the piece of metal that is placed in the masonry wall to ward off water from the wall and from the roof surface. Counter Flashing is important, as the continuous entry of water can cause issues. There are three basic types of counter flashing – surface mounted counter flashing, reglet counter flashing and through-wall counter flashing (SEE chimney flashing)

Tips for maintaining your chimney

Here are a few important tips for the maintenance of a chimney

It is advisable to use seasoned woods always. This is because using seasoned woods usually slows down the buildup of creosote. Properly seasoned wood should have a moisture content around 20%. The best way to ensure your fire wood is seasoned is by using a moisture meter.

Ensure compact stacking for your fire. It burns longer and more efficiently than loose stacking. You do not need starters like kerosene and gas to start a fire. Using any of them can lead to severe burns. Don’t overlook the importance of a chimney cap. Apart from protecting your chimney from debris, birds and some other small animals can enter through it when they are avoiding predators.