Water damage restoration — Talus, Issaquah
Talus is a 630-acre master-planned community on the eastern flank of Cougar Mountain, planned from 1995 and built out over the years since. It has the newer housing of the Highlands and the hillside conditions of the mountain neighbourhoods, which is an unusual combination.
What water damage looks like here
Two problems, not one.
Talus houses are new enough to have the Highlands' failure modes — supply lines, appliance hoses, water heaters on upper floors. They are also on a mountain flank, which brings the hillside problem.
Water moves sideways here.
The mountain slopes around Issaquah sit on Vashon till, known locally as hardpan — one of the densest soils there is, and effectively impervious. Rain moves easily through the looser soil above it, hits the till, and stops. From there it travels along the slope until it surfaces. Issaquah's own land use code requires geologic studies to map exactly this: springs, seeps and sloped wetlands.
That is why hillside houses take water in at the base of a wall during a storm rather than through a pipe. It is not a plumbing failure and it does not get fixed by drying alone.
Questions
Water comes in at the bottom of a wall, but only when it rains hard.
That is the hillside pattern rather than a plumbing problem. Drying handles the immediate damage; the recurrence is a drainage question, and it will come back each wet season until that is addressed.
Is this covered by insurance?
Groundwater and surface water intrusion usually is not, under a standard policy. A plumbing failure generally is. Establishing which one you have is the first thing worth doing, and it is what the assessment determines.