Roof Flashing Above Or Below Shingles

If this is a repair job the siding must also be removed and replaced with the flashing.

Roof flashing above or below shingles.

Drip edge is a thin metal flashing that is applied to the edges of your roof underneath the shingles. Second step flashing needs to extend 8 to 14 inches above the shingles according to the national roofing contractors association nrca. Coat the flashing with a zinc based primer followed by two or more coats of spray on rust preventive metal paint. You mayhave to pull some nails if the shingles are existing.

Shouldn t the shingles cover the flashing instead of the flashing covering the shingles. With that type of flat edge flashing the shingles should have overlapped 2 additional courses until they reached the lower edge of the flashing or at least past the penetration of the roof sheathing. The correct way to flash at the shingles in thearea you indicated is using step flashing. Joe same type of flashing here but these guys went with 1 additional course of shingles which is still wrong.

Each piece is slid under a shingle tab going up the roof. Step flashing is made up ofshort pieces usually about 5 x7 that are bent in half the long way. First step flashing must be installed before the siding so that the siding can cover the top of the flashing. All shingle manufacturers require step flashing at sidewalls for both asphalt wood and slate.

First use a stiff wire brush and solvent to clean the surface of any dirt debris or corrosion keep solvent away from asphalt shingles. Any issues here roofer guys.