During my biennial roof inspection, the following issue was brought to my attention:
There are four of these on the roof. On all four, it appears that someone, at some point, used a copious amount of sealant to seal the rubber donut to the pipe. Of the 4 people who looked at it, the opinions were split: 2 said it was fine, the other 2 thought the rubber boot had failed and the sealant is also starting to fail - so they suggested a "proper repair."
After much deliberation, I hired a roofing contractor to replace all 4 flashings and install new donuts. This is the outcome:
However, the roofer did not use any sealant during the repair - they just removed the tiles, installed new flashing and slipped a rubber donut down the pipe. I assume the rubber donut is suppose to seal the gap and divert water away from the flashing. Would adding some sealant/mastic to this area improve sealing?
There are four of these on the roof. On all four, it appears that someone, at some point, used a copious amount of sealant to seal the rubber donut to the pipe. Of the 4 people who looked at it, the opinions were split: 2 said it was fine, the other 2 thought the rubber boot had failed and the sealant is also starting to fail - so they suggested a "proper repair."
After much deliberation, I hired a roofing contractor to replace all 4 flashings and install new donuts. This is the outcome:
However, the roofer did not use any sealant during the repair - they just removed the tiles, installed new flashing and slipped a rubber donut down the pipe. I assume the rubber donut is suppose to seal the gap and divert water away from the flashing. Would adding some sealant/mastic to this area improve sealing?
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