Often overlooked, but critically important to the watertight integrity of your roof system, is the chimney. There are several points of entry that are a part of your home’s chimney. At Roof Revivers, our techs are trained to carefully examine each of these chimney components as part of our 19-point inspection. We are your chimney repair experts!
What is tuckpointing and why does it become necessary on your chimney? Tuckpointing is a chimney repair that replaces mortar that has fallen out from around the bricks or stones in your chimney. It does not address the masonry itself. The most important thing to know about tuckpointing is when it is truly needed. If you’re considering a chimney repair that involves tuckpointing, get a free evaluation from us. We can provide you with a reliable assessment that will help you make an informed decision about your chimney.
Preventative Maintenance: Waterproofing Your Chimney
Without being protected, both new and existing masonry chimneys are susceptible to water damage, even if they have been repaired. Because chimneys project above the roof line, they are particularly vulnerable to the elements. But water damage can be easily prevented with routine maintenance involving water proofing. For chimney repair and maintenance, we use ChimneySaver Water Repellents, which come with a 10-Year Warranty and have been used by chimney professionals for nearly 20 years.
According to American Society for Testing and Materials (ASTM) tests done by the University of Wyoming, ChimneySaver reduces water penetration into the masonry by 99.9%.
ChimneySaver also 100% vapor permeable, so it won’t trap water vapors that may pass through the bricks when the chimney is in use. If these vapors can’t escape, they can contribute to scaling, deterioration, and freeze-thaw damage.
The Chimney Crown
A chimney crown is the masonry piece that covers the top of your chimney and prevents water from seeping into the masonry below. Chimney crowns that are water damaged or cracked can lead to costly repairs. At Roof Revivers, we use Flex Crown, a coating that forms a flexible waterproof membrane to protect chimney crowns. It cures to a natural concrete/mortar appearance in about 24-hours and comes with a 10-year manufacturer’s warranty.
Chimney Flashing: Which Method is Better?
Flashing is simply the material used to seal joints between the chimney and the roof. Flashing is usually made from metal and installed in overlapping layers. Because Ohio experiences all kinds of weather, it is important that the flashing be installed in a way that allows some flexibility due to expansion and contraction caused by temperature changes.
A common shortcut is referred to as “pinning” the flashing. This is when the metal flashing is nailed or pinned to the mortar and caulking applied along the top portion of the flashing for waterproofing. Prone to popping loose, pinned flashings tend to develop cracks in caulking within only a few years and require constant maintenance to remain watertight.
Chimney leaks are a common problem usually due to improper flashing design and construction. It takes a skilled craftsman to install a flashing that will be maintenance free for many years.
At Roof Revivers, we use a method known as “Grind and Tuck.” A proven and reliable chimney repair technique, it consists of embedding the flashing into the mortar joints. Grind and tuck refers to grinding the mortar joints, bending the metal along the top of the flashing and tucking it back into the mortar joints. Mortar caulk is then applied to the joint, causing a permanent watertight seal. When a joint on your roof is sealed properly, it prevents water from seeping under the flashing and getting into the house.
Why We Recommend Copper Flashing
Although flashings made from copper can be more expensive, we recommend them. Copper flashings have proven to be the most enduring type of flashings used over the centuries. The history of copper roof and flashings goes back to 970 B.C.E. when Solomon’s Temple in Jerusalem was outfitted with a copper roof and flashing details. Numerous copper roof systems adorn historic structures around the world and are still in use today.
Have a leaky roof or crumbling chimney? Contact us to inspect your roof and chimney at no cost to you.