Why Should I get My Chimney Cleaned

Why Should I get my Chimney Cleaned?

 The job of the chimney sweep is to remove soot, blockages and built-up creosote from your chimney liner, firebox, smoke chamber and damper. This cleaning will help create a safer operation of your system during the heating system. It take only a small accumulation of creosote glazing to create the potential for a chimney fire. Creosote is a highly flammable substance that builds up inside your chimney or liner as a result of burning wood. The rate of accumulation can be higher if you practice poor burning practices or have a burning appliance or stove that is not working well. Different types of wood create different amounts of creosote when burned. Pine causes a rapid build-up of creosote and should be avoided as a regular source of wood. Creosote can also reduce the draw of the fireplace and reduce efficiency.

Chimney Inspections should be scheduled once a year.

To be sure that all of your systems are in working order and operating as they should, it is recommended that homeowners get an annual chimney inspection. Most homeowners opt to have a Chimney Cleaning done every year as well, especially if they use their fireplace on a regular basis. Other venting systems connected to furnaces and stoves should also be cleaned on a regular basis to maintain safer operation. Fireplace, stove, furnace and heating appliance systems are important to your home and families safety and not an area to neglect or cut corners on. Don’t risk the chance that an undiscovered defect could turn into an expensive repair or worse yet – a chimney fire.
If you only have minimal use of your fireplace or stove, an inspection is still advised annually to look at all heating venting systems, chimneys, stove systems and furnace flues. During these inspections any defects or issues that may be found that require action even if cleaning is not needed.
When you have a regular chimney sweep company that you use, they will generally put you on an annual inspection schedule. During these inspections they will advise you if it is time to sweep.

When Do I Need A Chimney Inspection?

If you haven’t had your chimney inspected in a year or more, if you are having any performance issues with your chimney, fireplace or heating system or if you have recently purchased the home you should schedule an inspection. Don’t wait – waiting almost always results in additional repairs, and unfortunately sometimes in property loss. Every year in the US homeowners lose over 200 million dollars as a result of continuing to use unsafe systems.
Another important time to get your venting systems inspected is when you have upgraded or changed heating systems or added a stove or insert. An inspection will make sure that your chimney, lining and venting systems are adequate and in working order to handle the new changes.
If you have not used your fireplace in a long time, pests may have built nests that could clog your flue or chimney chamber. Winter freeze cycles and moisture combine to take an annual toll on masonry and liner materials too. Over several years the deterioration will eventually require attention. Normal wear and tear that is left unchecked will affect the performance of your system. The longer the defects go without being addressed, the more expensive the repairs are likely to be. Bottom line is – staying on top of your systems is not only the smartest and safest choice, it ends up being the most cost-effective too.

How Often Should I get my Chimney Cleaned?

This depends a lot on how much you use your fireplace or stove. The National Fire Protection Association says, “Chimneys, fireplaces, and vents shall be inspected at least once a year for soundness, freedom from deposits, and correct clearances. Cleaning, maintenance, and repairs shall be done if necessary.” So, even if you don’t use your chimney a whole lot – birds, squirrels, raccoons and other critters may have been using your chimney making it unsafe to use without clearing out the accumulated debris from nesting activity.
The CSIA (Chimney Safety Institute of America) says that fireplaces should be cleaned when 1/8″ of sooty buildup is evident inside the chimney and flue system. If any glaze is appearing in the flue, cleaning should be done even if there is less than 1/8″ of build up. Any time an appreciable accumulation of soot and creosote occurs it can be enough to fuel a chimney fire that may damage the chimney and even spread to the roof and home. Furnace flue systems also require cleaning, so don’t neglect regular cleaning of those venting systems.
Some heavy use fireplaces produce an incredible amount of soot and creosote during a cleaning. Recently we removed nearly 2 full 5 gallon buckets of material from one chimney! Removing this material is critical to continued safe use of the fireplace and reduced risk of chimney fires that start when this highly combustible material builds up to unsafe levels.

What is the Best Time to Clean my Chimney?

Ideally, before the start of the burning season during the summer or early fall is a great time to get your chimney inspection and / or chimney cleaning. Before you think about building a fire or starting up your furnace because the weather has changed, is the time to call your chimney sweep. Maybe you forgot the early cleaning before starting to use the fireplace, stove or furnace? Don’t wait until next year, we can do your chimney cleaning or inspection any time of year. Call the office now at 828-387-6153.

Water Proofing and Your Masonry Chimney

Water and Your Masonry Chimney
The chimney is one of the most taken-for-granted parts of a home. Typically it tends to receive neither the attention nor the concern usually accorded other household service systems. The fact that chimneys may do their job reasonably well, even when abused or neglected, contributes to this atmosphere of indifference. Chimneys are far from the passive black holes that most people assume them to be. They perform several vital functions, and their simple appearance misrepresents their complex construction and performance requirements. A chimney deteriorated by constant exposure to the weather can be a potential safety hazard. Weather-damaged lining systems, flue obstructions and loose masonry materials all present a threat to residents. Regular chimney maintenance is essential to prevent damage, deterioration and future high-cost chimney repairs.
Masonry Chimneys
A masonry chimney is constructed of a variety of masonry and metal materials, including brick, mortar, concrete, concrete block, stone, flue tile, steel and cast iron. All masonry chimneys contain combinations of, or possibly all of, these materials, most of which are adversely affected by direct contact with water or water penetration.

Water Penetration
All masonry chimney construction materials, except stone, will suffer accelerated deterioration as a result of prolonged contact with water. Masonry materials deteriorate quickly when exposed to the freeze/thaw process, in which moisture that has penetrated the materials periodically freezes and expands causing undue stress. Water in the chimney also causes rust in steel and cast iron, weakening or destroying the metal parts.
Note: While most stone is not affected by water penetration, large amounts of mortar are required to bond the stone together properly. Therefore, a stone chimney – just like a brick chimney – should be protected from the effects of water penetration. Water penetration can cause interior and exterior damage to your home and masonry chimney including: • Rusted damper assemblies • Deteriorated metal or masonry firebox assemblies • Rusted fireplace accessories and glass doors • Rotting adjacent wood and ruined wall coverings • Water stained walls and ceiling • Clogged clean out area • Deteriorated central heating system • Stained chimney exterior • Decayed exterior mortar • Cracked or deteriorated flue lining system • Collapsed hearth support • Tilted or collapsed chimney structure • Chimney settlement In addition, when water mixes with creosote in a wood burning chimney system, it will generate a highly disagreeable odor that can permeate a home.

Preventing Water Damage
Chimney caps, also called rain covers, are probably the most inexpensive preventive measure that a homeowner can employ to prevent water penetration and damage to the chimney. Chimney caps have long been recognized as an important chimney safety and damage prevention component. Underwriters Laboratories (UL) specifies that any chimney lining system that is to be listed to their test standard must include a chimney cap.
Chimneys have one or more large openings (flues) at the top that can collect rainwater and funnel it directly to the chimney interior. A commonly-sized flue has the potential to allow large amounts of rain or snow into the chimney during just one winter when freeze/thaw cycles are common.
Chimney caps also provide other benefits. A strong, well-designed cap will prevent birds and animals from entering and nesting in the chimney. Caps also function as spark arrestors, preventing sparks from landing on the roof or other nearby combustible material.
A chimney cap should be easily removable to facilitate inspection and cleaning. For a long and effective service lifetime, a cap should be constructed of sturdy, durable and corrosion resistant material. Caps may be designed to cover a single flue, multiple flues, a large portion of the chimney or the entire chimney top. A full coverage chimney cap usually represents a larger initial investment. However, it is probably the best investment for long-term protection because of its ability to protect the entire chimney crown.
Repair or Replace a Damaged Chimney Crown
The chimney crown (also referred to as the chimney wash) is the top element of a masonry chimney. It covers and seals the top of the chimney from the flue liner to the chimney edge. The crown should provide a downward slope that will direct the water from the flue to the edge of the crown. The overhanging drip edge, by directing the run-off from the crown away from the chimney, helps prevent erosion of the brick and mortar in the chimney’s vertical surfaces.
Most masonry chimneys are built with an inadequate crown constructed from common mortar mix that is designed for years of weather abuse without cracking, chipping or deteriorating. A proper chimney crown should be constructed of a Portland cement-based mixture and cast or formed so it provides an overhang projecting beyond all sides of the chimney by a minimum of two inches. The flue liner tile should also project above the crown a minimum of two inches.
Repair Deteriorated Mortar Joints
Deteriorated mortar joints on the chimneys exterior are entry spots for water. Proper mortar joints have no gaps or missing mortar and are shaped in a way that directs water out of the joint. When mortar deteriorates from exposure to weather, it becomes much more absorbent. A common repair for deteriorated mortar joints is called repointing. In this process, the existing mortar joint is cut to an appropriate depth and the joint is repacked with new mortar. The joint is then cut to form a concave surface that will direct water out of the joint. A good repointing job, using proper materials, will give the chimney a much longer life span, and often will enhance its appearance.
Repair or Replace Flashing
Flashing is the seal between the roofing material and the chimney. Flashing prevents rainwater or snow melt from running down the chimney into living spaces where it can damage ceilings and walls and cause rot in rafters. The flashing is the expansion joint between two dissimilar materials. It is designed to allow both the roof and the chimney to expand and contract at their own rates without breaking the waterproof seal in either area.
Install a Cricket to Stop or Prevent Leaks
If the chimney is located on the low side of the roof where water run-off is directed against the chimney, the installation of a cricket will afford additional protection against water leaking into the home. A cricket is a water deflector that serves to direct rainwater away from the chimney. Crickets are recommended on chimneys more than 30-inches wide and they are especially important on steep roofs.
Waterproof Your Chimney
Most masonry materials are porous and will absorb large amounts of water. Common brick is like a sponge, absorbing water and wicking moisture to the chimney interior. Defective mortar joints or the use of improper mortar or brick can greatly increase the tendency to absorb and convey water to the interior of the masonry chimney.
Several products have been developed specifically for use as waterproofing agents on masonry chimneys. These formulas are 100% vapor permeable, which means that they allow the chimney to breathe. Therefore, water that has penetrated and the vapors produced when the chimney dries out or the water vapors produced during use are allowed to escape, while the waterproofing agent prevents water from entering from the outside. These products usually have a five- to ten-year warranty. Paint or clear sealers should never be used as a waterproofing agent because they will trap water vapors and moisture inside the chimney causing further deterioration.
Waterproofing is a preventive measure. When damage or deterioration (gaps, voids, cracks, missing mortar, etc.) already exists in a masonry structure, the chimney should be repaired before the waterproofing agent is applied. The chimney exterior may also need to be cleaned before the waterproofing material is applied. CONTACT US