If you want to keep your roof in top condition for years to come, learning about step flashing is important. This crucial component of your roofing system prevents moisture from getting into the gaps between your roof and walls. Learn more about it below.
What is step flashing?
Step flashing is best for where the roof face meets a wall, for example, where a dormer projects out of the roof. In this spot, it’s possible that water could flow down the wall and slip past the shingles into the building below. Step flashing ensures that water is directed away from the wall and ends up in the gutter. It’s installed in steps, with layers of shingles between, so that the water pours down each step and down the roof. Source: IKO
How to install?
Before running the first row of shingles, install a piece of step flashing along the sidewall so that it sits tightly against the roof. Align the step flashing with the leading edge of the starter course and nail it in place using one nail in the upper corner. There’s no need to nail more than this, and don’t nail through the flashing into the shingle as this will introduce a potential leak to the roof. Consecutive layers of asphalt shingles will cover the flashing, holding it in place.
– When the siding is installed it should be tucked behind this piece, and then consecutive courses lapped over it.
– The remaining siding on the sidewall will overlap the step flashing and nail. Source: ThisOldHouse
When to seek professional assistance
Roofing companies and fix-it services can install or repair step flashing for you on a piecemeal basis—that is, short of a full roofing job. For installing step flashing on chimneys, call a masonry company or chimney specialist since the step flashing typically is mortared between the bricks. Source: TheSpruce
If you have any more questions about your roofing system, don’t hesitate to give us a call. Our team of experienced professionals can help with all aspects of roof inspection, maintenance, and repair!
Contact:
Kerrisdale Roofing & Drains
168 W 71st Ave, Vancouver, BC V5X 4S7
(604) 360-2114
