Full Architectural Shingle Replacement — St. Catharines
Complete tear-off of two worn layers and replacement with 30-year IKO Cambridge architectural shingles. Ice-and-water shield installed at all eaves, valleys, and around the chimney.
Illustrative photo, not a confirmed Smith's project
[OWNER TO CONFIRM: project descriptions, dates and photography]. Existing case-study content is unverified; imagery is illustrative.
Retained project example — confirmation pending
The homeowner noticed granule buildup in the gutters each spring and two small ceiling stains after heavy rain. The roof was original to a 1989 build — 35 years old.
Two layers of shingles present, requiring a full tear-off before new installation. Significant granule loss on the south slope. North-facing eave showed ice-dam staining on the decking — three sheets of plywood needed replacement. Attic ventilation ratio was below code: soffit vents blocked by insulation.
Scope considerations
The attic had just two inches of blown insulation directly over the soffit vents, which was starving the ventilation system and causing heat to escape through the deck in winter — the root cause of every ice dam this home had experienced. Re-insulating to code and adding the ridge vent should eliminate the recurring February leaks entirely. The homeowners wanted to match the original dark colour; the IKO Charcoal blends well with the brick on Port Dalhousie homes built in this era.
IKO Cambridge 30-year architectural shingles (Charcoal)
IKO ArmourGard ice & water shield — full eaves, valleys, and chimney step
IKO Dynasty synthetic felt underlayment (balance of roof)
New aluminum step flashing at chimney and skylight curb
Replaced 3 sheets of 5/8″ tongue-and-groove roof decking
