How To Seal Bitumin Roofing On A Parapet Wall

To install the roof wall flashing above the builder bent the top edge of the flashing into a 90 degree lip about 2 cm in width.

How to seal bitumin roofing on a parapet wall.

Sealing asphalt roof shingles is a challenging job and something that you would be far better off hiring a roofing expert to do for you unless you are completely comfortable and experienced enough to attempt the job yourself. Plaster and mortar are very porous and absorb moisture the same way a sponge would so even a small crack on the top of a parapet that allows water into the wall may result in peeling or damaged paint. Liquid systems and putties including acrylics solvent based bitumens and water based rubberized acrylic modified bitumens which are used to seal parapet walls small flat roofs roof bolts flashings and ponds. It is the wind pressure that causes the majority of wall leaks not water flowing down the wall.

Proper roof wall flashing example. Bituminous sheet products are used to waterproof flat roofs basement walls and to line earth dams and canals. The installer tacked a row of asphalt shingles to the wall caulked their top edge and hoped for the best. Center it atop the wall so each side extends outward in equal amounts.

Here is an attempt though maybe not a very good one to make the roof flashing serve also as a through the wall flashing with a tile roof. Don t seal the parapet rain the primary source of water is driven by wind through permeable masonry units mortar joints and cracks in the wall. The application of the sealant product itself is easy but accessing the roof is by far the hardest part. This new torch on flat roof is leaking because the parapet walls and the coping stones are defective water damage to the ceiling below from the leaking ceil.

On the other hand the roof doesn t know which direction the rain is coming from its function is.