A good roof never leaks. No matter how many complex penetrations it has.
So I ‘flue’ off at the roofing plumber who did not backpan / back tray behind a large flue that crossed over a full trough in the roof sheeting. Of course, it both leaked and corroded.
Here are the tips the experts use:
- get up and look at the roofs …. so you become an Expert
- low pitch roofs need real careful attention to ‘weathering’ / turn-ups on ALL sheet and flashing ends
- extend the backpan as far as practicable under the ridge / barge capping
- seal Dektites to backpan carefully. Craftspeople use a DOUBLE row of neutral cure silicone on the high side …. and then Tek screw through the silicone. Please remove steel swarf with a magnet / vacuum. Blowing off just pushes the rust somewhere else. Smartypants use a strong magnet inside a doggy do do bag …. I didn’t know that!
- get up and look at the roofs …. so you become an Expert
