How To Seal Roof To Wall

Yes even flat roof to wall intersections are not being properly done.

How to seal roof to wall.

Before attempting to get to the roof you must make sure that the ladder is secure. To seal your roof flashing you first have to get on the roof. Below are two photographs of roof wall step flashing completed and effective of a slate roof against a brick wall below left and in process with step flashing against a dormer sidewall before the dormer siding has been put in place below right. In order to do so safely you will need an extension ladder and rubber soled non slip shoes.

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. It comes in 10 foot lengths or for step flashing 6 inch lengths. It is used to seal the gap between walls and intersecting roofs. The most common roof to wall intersections involve either a gable roof with its ridge running perpendicular to the wall or a shed roof that slopes downward away from the wall.

Providing the shed roof is at a steep enough angle to ensure the rain is not blown up the shed roof and over the top into the gap along the wall then the traditional lead flashing where the lead is let into the wall along a mortar line will do the trick. Proper roof wall abutment flashing examples.