A Toronto client's flat roof was leaking during rains. During a roof inspection we noticed the rubber membrane around the drain was loose and lifting. We suspected water rushing towards the drain was running under the membrane. We repaired the area by applying a SBS 250 cap membrane patch.
Here is an example of an inappropriate installation of a chimney flashing on a sloped roof that is sure to leak. When we examined the client's roof we easily spotted this inappropriate installation as the tall cone chimney flashing was installed over the shingles.
In January we received a call from a distraught client with a severely leaking flat roof. The leakage had created significant water damage in the dining area where the flat roof was above. The entire ceiling needed to be redone.