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Most roof leaks do not start in the open field of shingles, they start at the joints and transitions. That is where flashing does its work.
Custom flashing is fabricated to fit your roof exactly, sealing those vulnerable spots for good.
What is custom flashing?
Flashing is thin metal installed at the joints and penetrations of your roof to direct water away. Custom flashing is shaped on site to match your roof's specific angles, so the seal fits precisely instead of relying on a generic part.
Why custom flashing is important
Without properly fitted flashing, rain and snowmelt seep into the joints and lead to leaks, rot, and mold. Custom flashing creates a continuous, watertight shield that channels water safely into the gutters.
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Get a Free QuoteCommon areas that need flashing
Flashing protects the most leak-prone parts of a roof:
- Chimneys
- Skylights and roof vents
- Valleys where two slopes meet
- Walls and dormers where the roof meets vertical surfaces
- Roof edges, with drip-edge flashing
Materials we use
We fabricate flashing from durable, weather-resistant aluminum and galvanized steel, chosen to last through Ontario's seasons.
Why choose Sherak
We custom-form every piece to your roof for a clean, watertight finish, and back the work with our 10 year warranty. Flashing is one layer of a watertight exterior; see our complete guide to siding in Ontario for how it fits with the wall cladding and moisture barrier.
Written by
Sherak Ltd
Roofing & Exterior Specialists, Ontario
Sherak installs and repairs roofs, siding, eavestroughs, and more across York, Simcoe, Kawartha, and the GTA, backed by a 10 year workmanship warranty and $5M liability insurance.
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