You can use the highest quality siding, windows, or roofing—but if the flashing is done incorrectly, the whole system is at risk. Improper or missing flashings are one of the top causes of water damage in buildings across Canada.
Common Flashing Failures
Improperly Lapped Layers: Water runs behind the flashing instead of over it
Unsealed Penetrations: Gaps around fasteners or joints allow water intrusion
Missing End Dams or Kick-Outs: Water builds up and seeps into vulnerable areas
Caulking-Only Solutions: Relying solely on sealant instead of mechanical water-shedding
What Can Go Wrong
Rotting sheathing and framing
Mold growth behind siding or drywall
Window leaks and interior water stains
Shortened lifespan of cladding and trim
At Accent Exteriors, we don’t cut corners. Our flashing installations are engineered to handle real-world rain, snow, and wind—and built to last for decades.
Did you find this article helpful but still have questions?
If you’re looking for expert guidance on siding installation, energy-efficient building envelopes, rain-screen systems, or any other aspect of exterior construction, we’re here to help. Just click the button below to get in touch. We’ll help you move forward with confidence. Whether you’re a homeowner exploring options or a contractor managing a larger build, the Accent Exteriors team is ready to answer your questions and provide solutions that perform — from British Columbia to Ontario.
