Skylight Replacement and Flashing Rebuild in King, Ontario
A thorough overhaul to cure chronic leaks and upgrade waterproofing for a two-storey home in King.
- 1
Careful removal and assessment
We gently removed the existing skylight and surrounding shingles to inspect the curb and underlayment. This let us confirm wood rot limited to the curb’s top face and check the structural blocking beneath; any compromised decking was cut back and replaced with pressure-treated pine to code standard practice.
- 2
Rebuilt solid curb to industry standard
A new 2x framing curb was constructed to the skylight manufacturer’s recommended height and slope to prevent ponding. We sheathed it with exterior-grade plywood, applied a breathable self-adhered underlayment (ice-and-water shield) up the roof field and onto the vertical faces to meet best practices for York Region freeze–thaw protection.
- 3
Professional flashing sequence
We installed a stepped flashing assembly using 28‑gauge Galvalume counterflashing and a concealed stainless steel saddle where the roof plane met the curb, sealing interfaces with a polymer-modified asphalt underlayment. The top and side flashings were integrated under the new architectural shingles and sealed with high-performance polyurethane roofing sealant at critical seams.
- 4
New skylight and glazing details
We fitted a low-profile, double-glazed tempered skylight unit with a warm-edge spacer and an insulated curb flange to reduce thermal bridging. The skylight’s EPDM compression gasket and factory-applied weep channel were verified on installation to ensure proper drainage away from the opening.
- 5
Finishing, testing and cleanup
After reinstalling shingles and installing metal edging to match the home’s colour palette, we conducted a controlled hose test to simulate heavy rainfall and confirm there were no leaks. We restored any disturbed landscaping and left concise documentation of materials, manufacturer warranties and recommended maintenance for the homeowner.
Frequently Asked Questions
How long does a skylight replacement and flashing rebuild take?
Most residential jobs of this size are completed in one to three days depending on access, the need for structural repairs and weather. In King we schedule around seasonal conditions—avoiding extended freeze–thaw windows—to ensure adhesives and sealants cure properly.
Will this be disruptive inside the home?
We take a tradesmanlike approach to minimize disruption: containment of dust, protection of interior finishes and a clear plan for rooftop access. There is some noise during removal and flashing work, but we keep interior disturbance minimal and communicate timings by email.
How do I know if my skylight needs replacement rather than a quick repair?
Signs that warrant replacement include persistent leaks after prior repairs, visible rot or delamination at the curb, fogging between glazing panes, or shutters of the frame. A thorough inspection will indicate whether a new unit and full flashing rebuild is the prudent long-term solution.
What maintenance is recommended after the rebuild?
Annual inspections of sealant joints, clearing of debris around flashings and checking interior ceilings after heavy storms are sensible steps. We also recommend a light inspection after late-winter thaws in King to confirm no ice-dam related disruption.