Apr 252013

This archive of articles includes information about our products and services as well as descriptions of chimney parts, basic chimney use and safety instructions, and common chimney problems.




















  • TSR (Creosote Remover)







May 272014

What Is Creosote?

cap clogged with creosote P9100141

Chimney cap and flue clogged with creosote.

When wood burns, the carbon in the wood turns to carbon dioxide and floats up the chimney.  Other substances in the wood do not burn.  They are carried aloft by the heated air and are deposited on the chimney walls as the air carrying them cools.  Creosote is a tarry, black byproduct of burning wood.  Creosote is a shiny, difficult-to-remove substance which forms hard deposits.  (Soot, a related substance, is a powder-like form of carbon.  It is created through incomplete combustion of wood.)

If a chimney is not regularly swept, creosote (and soot) build up on the walls of the chimney in thickening layers.  This can make the chimney smell bad, as creosote smells awful when wet.  Creosote buildup can even block the chimney flue, making it difficult for the chimney to vent.  This can lead to a buildup of toxic gases (such as carbon monoxide) in the home when the fireplace is used.  Creosote is also flammable.  Large creosote deposits can ignite and cause a chimney fire.

How Do You Remove Creosote?

Creosote, soot, and other deposits should be cleaned from your chimney annually, at the end of the burning season, to keep your chimney and fireplace in top working condition.  The easiest way to clean your chimney is to have a chimney sweep clean it for you!  They have the tools and equipment required to deal with the tight spaces and potentially toxic chemicals found inside a chimney.  The best chimney sweeps are certified by the Chimney Safety Institute of America.

How Do I Prepare For A Chimney Sweep?

  • Do not use the fireplace for 24 hours prior to the sweep, to let the area cool down.  Masonry inside fireplaces can store heat for a long time — even if there is not an active fire burning, the chimney and fireplace can still be hot.
  • Move furniture and other items away from the fireplace.  Our technicians need about 6′ of space in front of the fireplace to use their equipment.  Don’t worry about dirt — we have a no-mess guarantee.
  • On the day of the sweep, keep children and pets away from the room the fireplace is in.  This is for their safety and ours!
Mar 302014

Your chimney, fireplace, wood stove, or other appliance has been working hard all winter.  Now that the weather’s starting to warm up, it’s tempting to forget about it until next year.  But don’t!  Spring is a great time to get your chimney flue inspected (and swept, if necessary) by a certified chimney sweep.

Stop Bird And Animal Invasions Before They Happen

Bats roosting under a chase cover.

Bats roosting under a chase cover.

Get your chimney inspected before nesting season and you will be able to block off holes or install a new cap before a happy family of birds or animals moves into your chimney!  The dark, quiet interior of a chimney flue is highly attractive to a variety of animals, including raccoons, bats, and birds, including the federally protected chimney swift, which, once it has entered a chimney, cannot be removed or bothered until it has left in the fall!  These animals can be loud or destructive and some can carry diseases or fleas.  Nesting material is flammable and can even block the chimney, causing other potential hazards.

Make sure critters never even get a chance to move in by ensuring all routes of entry are properly secured.  Your chimney sweep can make sure your chimney cap is secure and in good condition, and that there are no holes in your chimney chase to allow animal or bird entry.  The time is now!

Waterproof Before The Summer Rains

This moss-covered chimney needs some attention before facing another winter!

This moss-covered chimney needs some attention before facing another winter!

Your chimney has just lived through a long, cold winter.  Repeated freezing and thawing in cold weather can lead to cracks or deterioration, especially in a masonry chimney.  This can create holes through which water can travel.

Masonry chimneys also take on water if not waterproofed.  Brick is like a sponge!  If not protected from water entry, your chimney can crack, deteriorate, or even become a surprise rooftop “garden” of moss and other opportunistic (and flammable) plants.

Make sure your chimney is inspected and waterproofed (if necessary) before fall, and it will be ready to face the winter again with you!

Install Early: Get A Head Start On This Fall

Spring and summer are great times to install new appliances in your chimney and fireplace.  Been wanting a wood stove to help reduce your heating bills?  Looking to move from wood to gas?  Need to repair a damaged chimney flue liner?  Make use of the gorgeous weather (and any “summer specials” offered by your chimney sweep) to get your repair or install done painlessly.  Don’t be part of the big fall rush — get your work done before everyone else and you can be enjoying your new or repaired fireplace even on those first chilly days of fall.

Jan 302014

Check us out in this news article from WTVQ in January, 2014.  That’s our service manager, Blake Giles, giving some good advice!

Wood stove inserts can be great additions to your fireplace and home.  However, due to the extreme amount of heat they can put out, it is imperative that they be installed properly.  Improperly installed inserts are a potential cause of damaging house fires.

Barnhill Chimney, as well as the Chimney Safety Institute of America, recommend that all fireplaces, whether they have an insert installed or not, be inspected annually by a certified chimney sweep.

Jan 162014

One of the time-honored rites of summer is the ritual of the backyard barbecue: gather friends, family and food and roast up some old-fashioned (and tasty!) fun.  You have several options when selecting an outdoor grill.

Choosing The Right Fuel

Barbeque grills can use several different kinds of fuel, including wood, charcoal, natural gas or propane.  Barnhill Chimney, Fireplace, and Grill carries several brands spanning the full spectrum, for our Lexington, Kentucky, and surrounding area clients:

24NPAmerican Outdoor Grills (AOG), made by RH Peterson, run on natural gas or propane.  These high quality stainless steel grills come in post-style (bolted in place on your deck or patio or fixed in your lawn), or a portable, wheeled style.  They can also form the focal point of a beautiful outdoor kitchen!  Natural gas or propane BBQ grills have the benefit of instant startup — no waiting for the charcoal to light — and cook very quickly.

Primo XL Grill with Teak Table and extended racks.

Primo grills, which are American-made ceramic BBQ grills, are fueled by charcoal.  These grills can be fit onto wheeled mounts or even big beautiful wooden racks for a complete grilling experience.  Their heavy ceramic walls hold heat and allow them to cook very evenly from every angle.  They can even cook pizza with the aid of a pizza stone!  They require waiting for the charcoal to warm up, but the charcoal (and special wood blocks which can be added to the charcoal) can add a wonderful flavor to the food.

grill-wnk4-01Modern Home Products (MHP) grills, also made in America, come in natural gas and propane varieties and even infrared and hybrid models for amazingly fast, intense heat on demand.

Choosing The Right Size

Casual chefs may wish to investigate the smaller, portable models of grill, which can be used in small spaces, take less time to heat up, use less fuel, and cost less.

The right size is important: of course, larger grills can cook more food at once, so when you are serving large groups of people, some do not end up waiting for their burger after everyone else has been served.  Grill sizes are generally measured in square inches of grilling area.  It is a good idea to have approximately 100 square inches of grilling area per person being served.

Gas grills are sometimes sized by number of burners.  While more burners on a gas grill means more cooking space, it also means that the grill uses fuel faster.

Those who do not have natural gas service to their home may select a propane grill, which runs on propane canisters which can be purchased at local retailers and traded in when empty.  Those with natural gas service may choose to install a grill wired directly into their gas supply, so they will never run out of fuel.

Choosing the Right Material

Outdoor grills can be made of ceramic, sheet steel, stainless steel, cast iron or cast aluminum.  Ceramic grills are designed to hold heat in their walls for all around heating.  Cast iron grills provide more even heating but must be cleaned after each use.  Stainless steel grills can be almost maintenance-free.

Building Your Outdoor Kitchen

aog_built-in_lifestyle_lgAmbitious chefs can build an entire outdoor kitchen around a built-in model of natural gas or propane grill, including outdoor refrigerators, extra drawers and storage space, additional gas or infrared burners, lights, seating, and more — even a fire pit, a gazebo, or a roof to make your outdoor cooking space extra special.

Both natural gas and propane grills and grills fueled by charcoal or wood can cook food evenly and quickly, sear juices into meat, roast vegetables or potatoes, and can be used to make wonderful, healthful meals for your family.

Barnhill Chimney, Fireplace, and Grill can help you with your outdoor kitchen, from planning stages to installation.

Oct 102013
Legend Hammered Edge with "Napa Valley" design in Black Copper Edge

Design Specialties custom design: Legend Hammered Edge with “Napa Valley” design in Black Copper Edge

Custom glass fireplace doors can be a great, cost-effective way to improve the appearance of your fireplace.  Doors can be custom cut to fit almost any fireplace.

Glass fireplace doors have a variety of uses:

  • They can beautify older fireplaces which have soot staining or other cosmetic deterioration.
  • Glass doors can function as a partial damper in fireplaces where the damper is damaged and adding a new one is not an option.  This helps reduce heat loss up the chimney in winter.
  • Fireplace doors can help reduce “smoke migration”, where two fireplaces share a chimney, and smoke from one fireplace is drawn down the other flue and appears in the other fireplace.
  • They can reduce heat output, which can help to prevent overheating a small room.
  • Doors or a screen can help keep children or inquisitive pets away from the fire.

Prefabricated fireplaces can be difficult to fit with glass doors due to the need to not block any air inlet openings which may be around the front of the fireplace.  These openings allow air into the firebox to cool it, and must not be blocked.

Direct vent fireplaces often come with their own custom fronts and doors, but these are often simple and matte black, to match most decor.  Direct vent fireplaces can be retrofitted with all sorts of custom glass doors to make your fireplace look exactly like you want it.  Want a huge, towering dungeon fireplace with cast iron doors?  Want a delicate, country look with laser-cut vines and flowers?  A hunting scene?  Something unobtrusive and modern in sleek brushed nickel or polished brass?  Glass fireplace doors are truly custom — you can make your fireplace look exactly how you’ve always envisioned it.

Barnhill Chimney, Fireplace and Grill carries glass fireplace doors by Design Specialties.  Stop in to our showroom to see some of these doors up close and hear about what we can do for your fireplace!

Jul 172013

Due to the porous nature of masonry, some smoke residue is always present in a masonry chimney.  Chemical residue from wood smoke actually penetrates the masonry and remains inside it even after the most thorough sweep.  This is not necessarily a hazardous condition, but it can cause odor.  In dry conditions no smell may be noticeable.  In humid conditions, or in the event of a leak, the chemical residue mixes with water also present in the masonry.  This interaction can “free” more odor molecules, producing a noticeable smell.

There are multiple options for reducing chimney odors.  The easiest method is to reduce the amount of air being drawn down the chimney flue and into the house.  Being certain the damper is closed is the first step.  Installation of a top seal damper, which closes the flue from the top (instead of at the throat, like a standard damper), can also minimize water entry into the flue and keep the air in the flue less humid.

As in the refrigerator, a packet of baking soda can reduce odors in the fireplace itself, or there are “fireplace deodorants” available which perform a similar job.  Putting a dehumidifier in the room may help.  We have had clients have success putting decorative candles (with the damper open!) in the fireplace to heat up the air in the flue.  This causes the natural chimney draft to draw air up out of the flue instead of into the house.  (This works better in cold weather.)

In some fireplaces, airtight glass doors can be installed to further seal the fireplace off from the house.

Other appliances (often central air conditioning, but also dryers, built in vacuums, or even stove exhaust fans) may also be causing air movement in the house, which may be drawing air down through the chimney, exacerbating the smell.  A top seal damper will help with this; depending on what appliance is causing the air movement, installation of an attic fan or a basement air intake may also help to reduce the amount of air being drawn down the flue.

For maximum water entry prevention on any masonry chimney, we recommend installation of a full size chimney cap (which covers the entire top of the chimney to exclude water); application of an elastomeric sealant to the crown; and application of a breathable masonry sealant to the masonry body, or chase, of the chimney.  These three installations work together to significantly reduce water entry to the chimney, and minimize odors caused by moisture.  (They also greatly prolong the working lives of masonry chimneys!)

Apr 222013

Here are photos of some common chimney parts! These are items about which our clients commonly ask. We make, use, or sell these items here at our shop. These are just a sample of the things we work with every day!

Apr 222013

A chimney is a hollow structure which is designed to vent exhaust gases from an appliance — such as a fireplace, a wood or gas stove, a boiler, or a hot water heater — safely out of a building, steam locomotive, or ship and into the atmosphere.

Chimneys are generally as vertical as possible to help encourage the flow of air through them. They work through a mechanism known as the stack effect, wherein warm indoor air rises to the top of the house, causing cooler air to be drawn into the bottom of the house while the warm air passes out the top. A chimney intensifies the stack effect, allowing an active flow of air to carry gases away from the inside of the house and out through the top of the chimney.

The passage of air through a chimney is called draft (or draw). Factors that affect draft include the height of the chimney, the ambient temperature, ventilation or lack thereof in the room in which the exhausting appliance is located, objects near the chimney, the weather, and the diameter of the chimney.

A pipe chimney.

With residential chimneys, you primarily encounter two types of chimney: masonry, and prefabricated, or pipe.

Prefabricated chimney comes in sections, which are stacked to form the chimney.  The pipe is generally double- or triple-walled for insulation, and there are metal pass-throughs protecting where the pipe goes through walls or other combustible materials. Places where chimney pipe passes through a flat surface are often covered by protective storm collars which help to exclude water by directing runoff away from the joint. Prefabricated chimneys are usually used to provide ventilation for matching prefabricated fireplaces or for freestanding wood stoves.

A prefabricated chimney.

A prefabricated chimney is really a prefabricated chimney system — it consists of a firebox/pipe chimney combo which are manufactured together and designed to be used together. In some cases, when the pipe chimney exits the house it is enclosed in an insulating chase (made of wood or masonry) which protects it from the elements (thus assisting in more efficient draw). The chase is topped by a chase cover, a flat metal “shoebox lid”, through which the flue pipe passes, and the pipe itself is topped with a single flue cap.

A masonry chimney.

Many older homes have a traditional masonry chimney. These chimneys have an insulated masonry firebox at the bottom, in which the fire is burned or an insert is placed. Above the firebox is the smoke chamber, an area where the (usually large) firebox narrows into the actual interior of the chimney, called the flue. The flue itself is made of stacked cylindrical clay bricks (think vertical macaroni!) called flue tiles.  The tops of masonry chimneys are layered with mortar and are called crowns. The end of the last flue tile generally protrudes through the crown, and the whole thing is topped with a single-flue or outside-mount chimney cap to keep out animals, debris, and water.

Since chimneys are essentially giant open tubes that draw air through them, they can affect temperature regulation of the home by allowing warm air to flow out of them in the wintertime. To prevent this, most chimneys have a moveable metal plate called a damper. The damper opens to allow gases out when a fire burns, or closes to keep warm air in the room when the fire is out. A throat-style damper “lives” around where the smoke chamber meets the flue. A top-sealing damper lives at the top of the chimney flue, and can also double as a chimney cap when it is in the closed position.

Apr 222013

A single flue cap on a masonry chimney with terra cotta flue liner.

A good chimney cap will protect the flue from water entry as well as from entry by animals and debris. It can help improve draft by reducing the effect of wind at the top of the chimney. A chimney cap may also reduce the chance that embers rising out of the chimney will land on the roof. If you hear dripping in your chimney, find water on the walls, or find birds or animals in your chimney, you may need a chimney cap.

A single flue cap and chase cover, part of a prefabricated chimney system in a masonry chase.

There are many kinds of chimney caps. A single flue cap, as its name implies, covers the end of a single chimney flue. This protects the chimney flue itself from water and animal entry, and does not cover any of the chimney crown. Single flue caps of different types can work with masonry flues (above) or prefabricated chimneys (right). On prefabricated chimneys, single flue caps are often used in combination with chase covers to form a complete coverage solution. On masonry chimneys, single flue caps can be a cost-effective alternative to multi-flue caps or can cover flues which cannot fit under a larger, full-size cap.

Multi-flue caps cover more than one flue at once. They can be used in situations where multiple flues do not all accept the same style/size of chimney cap or where multiple single flue caps would interfere with each other’s draft. They can give the top of a chimney a uniform, “polished” look.

A top mount cap on a masonry chimney.

Caps adhere to the chimney in many ways. Most single-flue caps clip, bolt, or snap directly to the end of the chimney flue (which generally extends a little bit above the crown of the chimney). A top-mount cap is attached directly to the masonry chimney crown. It provides protection for the flues beneath it, and some protection for the crown.

An outside mount cap covers the entire top of the chimney chase — including the masonry crown. It covers even the corners of the chimney with metal, protecting the masonry structure of the chimney as well as the flue area from water entry.

A stainless steel, outside mount multi-flue cap.

There are other kinds of chimney caps as well. Chimney pots are sometimes made of terra-cotta, like chimney flue tiles are, and can be formed into unusual and beautiful shapes. They are often just decorative, but they can sometimes help with draft problems by extending the height of the flue. Shrouds are caps which have partially solid metal sides instead of a screen. They can sometimes help with drafting problems caused by high winds.

A stainless steel, outside mount multi-flue cap.

Single-flue caps come in a number of standard sizes to fit standard-sized chimney flues. Multi-flue caps must be custom made for each chimney, because every chimney is different. All chimney caps are designed to be removed during annual cleaning of the chimney and be easily replaced afterward.

Barnhill Chimney’s chimney caps are hand-made in our metal shop out of stainless steel or copper and will not rust. All our chimney caps come with a lifetime warranty.