There
are four common problem areas in the construction of tile
roofs.
- The ridge of the tile roof is left open to rain.
The national Roofing Contractors Association (NCRA) and most manufacturers recommend that grout or
other closure device be used to seal this exposed location.
-
Open headwalls can be a source of leaks
in a driving rain.
Flashing and counterflashing as well as
a grout closure are critical to provide a weathertight
seal.
-
Roof penetrations installed without
flexible flashing.
The principal concept is to make sure that
any flashing is flexible enough to be "shingled"
(lapped) into the tile assembly.
-
Eaves should shed water, not collect
water.
Any water that gets under the tile surface
should have a way to shed off the roof at the time eave
rather than being dammed at the roof edge.
Consult manufacturer's recommendations for
the specific tile product.
Information provided by Building Analysts, a full-service architectural and engineering firm with many years of experience in construction litigation. Their services include: architectural and structural investigations, repair recommendations, preparation of exhibits and expert testimony. Contact Building Analysts at (619) 234-8153.
