Roof intersection with brick wall above

Roofing · Hip and Ridge Flashings · printed page 21 (PDF page 22)

Book index entries

Brick Wall – Flashing with Roof Intersection Below Flashings – Roof/Walls Masonry Roof/Side Wall Flashings Roof – with Brick Wall above Flashings Roof/Wall Flashings

Text in the illustration

the top of the flashing should be let 1" into the mortar joint and sealed
simply caulking it to the face of the brick will lead to quick deterioration
the apron of the flashing should extend 6" to 12" across the roof (6" is more typical)
the steeper the roof is, the shorter this part of the flashing can be
in good quality installations, the bottom edge is turned underneath
this hem makes for a stronger edge that is not sharp

Generated explanation

The illustration shows apron flashing at the intersection of a shingled roof and a brick wall extending above it. The flashing rises against the wall and extends outward over the roof covering. An annotation specifies that the top should be let 1 inch into a mortar joint and sealed, warning that merely caulking it to the brick face leads to quick deterioration. The roof apron is specified to extend 6 to 12 inches across the roof, with 6 inches more typical and a shorter apron possible on steeper roofs. The lower edge is shown turned underneath to form a strengthening hem that eliminates a sharp exposed edge.

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