Could our lintels be leaking?
Since this past winter I have noticed mold buildup on the inside of some of my windows. We have been told that it could be due to the masonry around lintels not being flashed properly, or due to interior moisture or roof leaks traveling down the window. Our 3 unit condo building in Chicago is only 4 years old and all the lintels are rusted so we plan to get that sanded, and rustoleum.
Any idea if the mold is from the masonry around the lintels or whats the best way go about detecting this?
u/psblah — 6 days ago