Chimney Chase Cover - Chimney Cap
A chimney chase cover is a simple fix and preventative measure for many serious problems. A chimney chase cover fits on the top of the chimney chase, much like the lid on a shoebox. A chase cover will protect the interior of the chase from the elements. The cover prevents moisture, critters, sticks and leaves from falling into the chase and on to the chimney. A lack of a cover or an improper or deteriorating one can result in the necessity of costly repairs and other problems.
Chimney caps are protective coverings for a chimney. Chimney caps are available in many sizes, shapes and materials and can be custom fabricated to fit the size of your chimney. Standard sizes of pre-fabricated chimney caps are often assembled on-site to save you time and money.
Curt Breiwa is seen here installing the venting for a gas insert. This is a framed wood chase with a galvanized chase top. This chase top was in fairly good shape so he did not need to replace it. The large round band is a storm collar that sheds the water from the pipe and directs it to the chase top. Note the wrapped or folded edge to the chase top, this allows for water to drain off the chase top and onto the roof.
Inexpensive, pre-fabricated fireplaces typically come with galvanized or lower grade stainless steel caps and chase covers. These covers often last only 8 to 10 years before they need to be replaced. Original chase covers that come with pre-fabricated chimneys, often rust quite quickly. As water runs off the cover and down the sides, it will bring with it the rust from the top and cause the sides of your chimney to pick up an unattractive discoloration.
If this problem goes unnoticed, the chase cover can rust through and cause water to drip down inside the chimney. Exterior rust stains are often the first indicator of a chimney chase cover issue. It is important to take care of the problem as soon as it is noticed, so that it does not advance to a point where water enters, which brings with it, its own set of serious problems.
Solve the problem once and for all with a stainless steel or copper chimney chase cover. No maintenance, no replacements, just continuous protection. Tiny holes or cracks in a chase cover will let water seep into the structure and cause expensive water damage. Stainless steel is more durable and stronger and will look better for a longer period of time than other materials. It is also recommended that the chase cover be designed with a cross break which creates a "dome" effect. This will prevent the snow, ice and water from pooling on top of the chase cover.
Chimney chase covers can be made to fit perfectly on any shape or size chimney top. And with single or multiple vents, these chase covers can last a lifetime when your chimney is maintained properly. Stainless steel chase covers are designed to withstand the harsh weather conditions we experience in our service area including Northeast Iowa, Southwest Wisconsin and Northwest Illinois. While stainless steel is the most common material used to make these chase covers, copper covers offer the same reliability and sturdiness in a more decorative design.
Installing a sturdy and well manufactured chimney chase cover made from copper or stainless steel is an important step in the right direction to ensure the continued protection from the weather. The most important aspects of a chimney chase cover are the tight, waterproof seal around all edges, a high collar, and a drip-edge that contains a 45 degree angle to encourage proper water runoff. This piece is the critical first guard against the weather and other factors of nature.
To inquire about installing a chase cover on your chimney or to check the condition of an existing one, contact our Certified Chimney Sweeps & Chimney Professionals at Dubuque Fireplace & Patio today.