House Washing in Seattle, WA

It eats the paint.

Mold and mildew are fungi. They break down the binder that holds a paint film together and the pigment that gives it color, so the wall goes chalky and flat years early. Kill the growth and you stop the clock.

It holds water against the wall.

Growth acts like a sponge, so the siding stays damp long after the rain stops. Moisture that cannot dry works under the paint film and lifts it into blisters. Once you see bubbling, a wash is no longer the fix.

It starts where you never look.

Soffits and the north side go first, because they stay shaded and damp. We treat soffits, fascia, and trim on every wash for that reason.

Chalky and faded? That is not growth.

Run your hand down the wall. If it comes back white, that is oxidation: the coating itself breaking down under UV, not something living on top of it. No wash touches it, and any company that tells you otherwise is going to hand back a clean wall that still looks dead.

We remove it as its own job. A specialty compound pulls the chalked layer off and brings the color back, on siding and on the aluminum and vinyl window frames that chalk right alongside it. It starts with a test area you approve, it is quoted after we see it, and we will tell you plainly when the coating is too far gone and paint is the better spend.