How To Repair A Flat Roof Drain

Published on nov 3 2015.

How to repair a flat roof drain.

Unlike other roofing types that are slanted or sloped to allow water to drain automatically flat roofs need a built in drainage system to help remove moisture and debris. Rating is available when the video has been rented. The next place to look is at gutters or draining channels. This feature is not available right now.

Spread roofing cement over the hole in the roof drain and the surrounding area before leaving it to dry. Poor drainage can lead to serious issues with flat roofing from leaks to structural damage. Start by looking for plugged drains. Please try again later.

If it is a large hole which has caused significant damage cover the roof cement with a piece of sheet metal as an additional patch. Step sloped insulation step sloped insulation is a more affordable way to slope a flat roof and it involves installing several layers of flat board insulation under the roof membrane instead of cutting a custom made roof board. The board is installed in steps with the thinnest boards at and around the drains. Repair flat roof seams and drains with polyprene.

3 use the utility knife to cut a 12 inch diameter circular patch out of the rolled asphalt roofing. Dry the puddled water with old rags or towels and allow the roof exterior to completely air dry. Unclogging the drain will solve the problem. Dry it thoroughly and prepare the surface by rubbing it with coarse sandpaper.