With time masonry chimneys are prone to be a source of certain problems if construction details were not put into proper utilization during the initial set. Such problems may include efflorescence, spalling and leaking. The only way to correct this problems is through careful consideration of LI chimney repair. The above problems should not worry you as a homeowner or a builder. You can get a perfect and excellent solution to correct and repair common chimney problems by considering the following guidelines during your repair;
- Avoiding the use of Poor cap
This the most potential source of chimney problems. The cap should be regularly checked for cracks and water leakages to avoid this kind of problem. Experimentally the best chimney cap is a poured concrete cap with a drip notch and 1 �” overhang. In a construction involving bricks there are printed details on a package card attached to every cube of brick. These details should be considered carefully to give the best results. Metal also can be used to serve as a cap, this is because it provides a very effective weather protection when used as a cap. As compared to concrete, metal cap is also more economical when used as a repair.
- Checking the Corbel
This can also be a potential source of chimney problems as it can allow water to penetrate through. Corbels have been identified to act as ledges thus allowing water to accumulate and eventually find its way into the masonry. If found that the corbel details have created core holes then the problem requires further aggravation. Normally a simple mortar bevel is applied to the corbel to assist in eliminating this problem.
- Inspecting Counter Flashing
This is also another cause of chimney problems. When roofing, counter flashing should be checked for any possible source of leakage and repaired carefully to avoid further problems.
- Filling of Mortar Joints
Masonry chimneys should be carefully inspected for unfilled mortar joints. If there are any holes or partially filled joints, then they should be properly tuck pointed and corrected.
- Using a Water Repellent
This is used to provide more protection from leakage. When water repellent is applied it is recommended that only a breathable material made of Siloxane is used together. Before application of water repellent, the above mentioned repairs should be completed first. The masonry must also be completely dry before the water repellent is applied. This is to allow maximum penetration of water repellent.
- Installing a Chimney Cricket
Additionally, a chimney cricket should be installed to reduce the possible problems. It is normally recommended when the chimney dimensions are parallel to the ridge line and should be greater than 30 inches and the chimney should not I intersect with the ridge line.