Indoor air
Moisture & mold
How BC rain and closed-up winters drive condensation, musty smells, and mold — and what actually stops it.
British Columbia
Home care for a climate that does not dry out.
Rain, moss, crawl-space damp, and long wet winters. These guides are written for Lower Mainland, Island, and coastal BC homes — not generic “home maintenance” copied from drier provinces.
Watch for: musty air after a rain week · soft spots at the crawl-space rim · dryer cycles that never quite finish · overflowing gutters on the north side
The approach
Source control first. Then airflow. Products and contractors last — after you know the problem.
The wet-coast problem set
Start with the symptom you actually have. Each guide is a homeowner briefing, not a contractor pitch.
Under the house
Crawl spaces
Why vented crawl spaces fail on the wet coast, and what encapsulation, liners, and drying actually do.
Below grade
Basements & seepage
Efflorescence, cold-joint leaks, and the difference between condensation and true water intrusion.
Overhead
Roofs & moss
Moss, wind-driven rain, and the maintenance that keeps a Lower Mainland roof from failing early.
Around the house
Drainage & gutters
Grading, downspouts, and window wells — the cheap work that keeps water off your foundation.
Airflow
Ventilation & dryer vents
Bathroom fans, HRVs, and the long dryer runs that dump moisture and lint where they should not.
Fall prep
Gutters before the rains
Why late-summer gutter work is the cheapest insurance against overflow, fascia damage, and foundation seepage.
Drainage
Downspouts & foundation
Roof water at the footing is a common cause of damp basements and crawls — often fixed with extensions and grade.
Overhead
Moss on BC roofs
Why coastal roofs green up, what moss does to shingles and valleys, and what removal can and cannot solve.
Indoor air
Musty first floor
When the main floor smells musty, the crawl space and exhaust paths are often the real source.
Under the house
Crawl vapor barrier
Bare soil under the house feeds moisture for months. What a ground cover actually does — and how it fails.
Indoor air
Window condensation
Winter glass sweat is common on the coast. How to tell condensation from leaks, and when wet sills matter.
Gear
Dehumidifiers for cool spaces
What to buy for a cold basement or crawl — continuous drain, auto-defrost, and why it is not a water fix.
Airflow
Dryer vent checks
Lint, long runs, and exterior flaps: the homeowner checks before dry times stretch and moisture goes wrong.
Fall is the high-leverage season.
Gutters, roof moss, grading, and dryer vents are cheaper to deal with before the next months of rain arrive.