The chimney crown, also referred to as the chimney wash, forms a very important part of the chimney as a whole. In a masonry chimney, the crown is the topmost part, and is placed in such a manner that it acts as a seal on the chimney top, between the flue liner and up to the edge of the chimney. The slope of the crown should always be in a downward direction to enable any excess water to flow away from the flue to the edge of the crown. This area surrounding the chimney, thus plays the role of an umbrella for the whole structure, by preventing water from entering into the vulnerable masonry of the chimney.
It is always better to keep a regular close watch at the state of your chimney crown, since early detection of wear and tear can result in saving a lot of money in the long term. If the crown displays abnormal signs of disintegration or has pieces missing, then the best thing to do is to replace or rebuild it totally. However, if the cracks are minor, then the best solution is to apply a crown chimney sealant for a failed chimney. This again, if carried out at the right time, can result in huge savings that may occur if the problem is left unattended.
Chimney crown sealing
This waterproof seal, is perfect for small cracks and prevents water from seeping into the mortar that is the main element of the chimney. For bigger cracks, a high bonding patch work is done over which the sealant is then applied. If these chimney crown repairs are done in a proper way, it can add years of life to your chimney.
Chimney crown replacement
If the chimney crown has pieces missing, or has begun to fall apart, it is best to have a new one, else not only the crown but the whole chimney will get destroyed eventually. The correct way to do this in an economic and long lasting way is to go for a cement chimney crown. This new crown should be so designed that it overhangs over the outer perimeter of the chimney structure. A precast reinforced steel crown is also a good answer, as they are watertight and can resist the vagaries of weather without any problem.
Crowns of stone and metal can also be used, so long as they they prevent the water from running down the bricks. The main object is to keep the chimney structure as dry as possible. Ignoring the basics in Boca Raton chimney repair can cost you big time, therefore, timely maintenance can extend chimney life. The whole process can be completed in a few hours. In case your roof is steep and you cannot access the crown easily, it is best to call a professional to do the job for you. Just do not neglect the work one way or the other, and get it done with as soon as possible.