Good Steward · PNW envelope
Coastal waterproofing checklist
Educational checklist for baths, additions, and weatherproofing near Puget Sound. Not a product endorsement or installation manual.
Coastal moisture context (illustrative)
Moisture habits
- Identify wind-driven rain exposure and coastal moisture risk for the elevation before finish selections.
- Require a written dry-in / temporary weather protection plan when openings are cut in roofs or walls.
- Specify the waterproofing or weather-resistive approach in the contract (system + responsible trade).
- Photograph membrane changes of plane, pan flashings, and wet-wall assemblies before cover.
- Confirm ventilation strategy for baths (fan capacity, duct termination) in writing.
- Sequence exterior cladding and window flashing so water has a drainage path, not a dead-end cavity.
- Walk a moisture-related punch list before final payment; keep product cut sheets in the owner file.
Related: PNW bathroom waterproofing essentials · Weatherproof-first method · Bathroom directory
Another Story is a Board feature for second-story concepts — still weatherproof before finishes.
Bathroom waterproofing guide · Bathroom cost factors · Bathroom directory · Materials index
Official resources
Outbound links to government portals only. The Board of Project Stewardship does not issue permits or licenses. Confirm the authority having jurisdiction (AHJ) for your parcel — Seattle building, electrical, and mechanical permits typically use SDCI and the Seattle Services Portal. Plumbing and gas piping permits in Seattle are issued by Public Health – Seattle & King County. Many other Puget Sound cities use MyBuildingPermit. Always re-verify contractors at WA L&I Verify before hiring.
Board feature
Another Story
Same home. Another story. Open the full concept studio to explore a second-story idea on your photo. Concept preview only, not a bid or permit document.