Roof leaks

Published on October 20th, 2015 | by Henri


Caulking leaks in a sunroom roof

Q. We have a sunroom that has three-inch white polystyrene aluminum-clad roof/ceiling panels. This 20-year old roof now leaks from the roof seams at the downward end of the roof pitch. The leaks only occur when snow is melting. Is there a sealant available that I could brush on or apply over the roof seams, possibly some type of white flexible tar to seal those seams?

A. The best sealant I can suggest is Sikaflex-1a – a caulk, adhesive, sealant with excellent flexibility and adherence to clean surfaces. It comes in white. You can purchase it from any of the A. H. Harris building supply stores; there are several on the East coast. Their Web site is Click on Locations for the city nearest you, or buy it online.

An alternative would be one of the peel-and-stick tape that can be exposed to the weather. It can be applied over the seams from top to bottom. Buy in building-supply houses.

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