How To Seal Bitumin Roofing On A Parapet Wall

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.

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. A parapet indicates any low wall along the roof of a building the edge of a balcony the side of a bridge or similar structure. The flat roofing material must go up the wall a minimum of 12 or up the wall and over the top of the wall if the wall is less than 12 high. Center it atop the wall so each side extends outward in equal amounts.

The installer tacked a row of asphalt shingles to the wall caulked their top edge and hoped for the best. Bituminous sheet products are used to waterproof flat roofs basement walls and to line earth dams and canals. 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. Proper roof wall flashing example.

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. 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. It is the wind pressure that causes the majority of wall leaks not water flowing down the wall. The application of the sealant product itself is easy but accessing the roof is by far the hardest part.

Roll out bitumen flashing atop the wall from end to end with the self adhesive backing paper facing down.