Spokane winters bring repeated freeze-thaw cycles that expand and contract skylight seals on homes built before 1980, especially those on the South Hill with steeper pitches. When the original butyl or silicone fails, water tracks under the flashing and into the attic insulation, often showing up weeks after the last snowmelt. A proper fix starts with removing the existing curb flashing, inspecting the decking for rot, and installing new step flashing that ties into the existing shingles rather than relying on caulk alone.
Many Spokane County roofs use asphalt shingles over skip sheathing, which means any skylight repair must account for the gaps that let meltwater migrate sideways. Homeowners often mistake a stained ceiling for a simple skylight issue when the real path runs along the rafters from a compromised cricket. Technicians trace the leak with moisture meters and UV dye before touching the skylight, then replace the saddle flashing and add ice-and-water shield upslope to prevent recurrence during the next heavy rain event.
Access on older Spokane homes frequently requires roof jacks and harnesses because many skylights sit above second-story additions or dormers with limited footing. Working around existing electrical and HVAC penetrations near the skylight demands care to avoid creating new leak points. After the repair, a garden-hose test at full pressure confirms the fix before the crew leaves the site.
Technician insight
In Spokane, the thing that catches most people out with Skylight leak fix is how snow drifts against the uphill side of skylights on South Hill homes with skip sheathing, pushing water under the flashing during the first warm spell after a cold snap.
South Hill Skylight Leak
Homeowner noticed ceiling stains after spring snowmelt. Inspection found failed original sealant and lifted flashing on a 1970s curb skylight. Crew removed the old materials, installed new copper step flashing and ice-and-water shield, then tested with a hose. No further leaks appeared during the next rain.
Skylight Leak Fix Services We Offer
✓Skylight Seal Replacement
Removes failed perimeter seals and installs new high-temperature silicone or butyl tape rated for Spokane freeze-thaw exposure.
✓Flashing Repair Around Skylights
Replaces damaged step and counter flashing with copper or painted steel that matches existing Spokane roof colors and integrates with shingles.
✓Cricket Rebuild and Waterproofing
Rebuilds the small roof saddle behind the skylight and adds self-adhered membrane to divert snowmelt and rain.
✓Glass Panel Replacement
Swaps cracked or fogged skylight glass with tempered or laminated units while preserving the original frame on Spokane homes.
✓Leak Tracing and Moisture Mapping
Uses moisture meters and dye testing to locate hidden water paths before any skylight work begins.
Skylight Leak Fix Cost in Spokane, WA
| Service | Typical Range | What Affects It |
|---|---|---|
| Sealant and minor flashing touch-up | $250–$475 | Single skylight, easy access, no deck damage |
| Full flashing and cricket rebuild | $650–$1,100 | Includes new step flashing and membrane on one skylight |
| Glass panel swap | $400–$750 | Tempered unit, frame left in place |
| Leak tracing with moisture mapping | $150–$300 | Diagnostic only, applied to repair if work proceeds |
Ranges are typical for Spokane, WA and confirmed with an exact written quote before any work starts.
How it works
- 1
On-Site Inspection
Technician climbs the roof, checks flashing condition, and tests for active leaks using water and moisture meters.
- 2
Material Removal
Old sealant and damaged flashing are cut away without disturbing sound shingles or decking.
- 3
New Installation
Fresh flashing, ice-and-water shield, and sealant rated for Spokane winters are installed and tied into existing roofing.
- 4
Water Test and Cleanup
Full-pressure hose test verifies the repair; debris is removed and the attic is checked for remaining moisture.
Pricing
Upfront quotes given after inspection; most skylight leak fixes fall into common ranges shown below.