Roof Moisture Testing

What This Service Involves

A roof that has weathered years of Northwest rain can look fine from the ladder while its insulation quietly turns to a sponge underneath. Our moisture testing uses capacitance and probe meters, and where warranted a small core sample, to measure saturation across the deck rather than guessing. Mapping the wet and dry sections lets us recommend replacing only the compromised areas, which keeps sound roofing in service and controls cost. For property owners around Puget Sound weighing coating versus replacement, this data turns a difficult decision into a straightforward one.

Benefits

Distinguishes salvageable roofing from sections that must come out; prevents coating over trapped water that would fail prematurely; supports warranty and insurance claims with measured readings; helps budget accurately by mapping the true extent of damage

Our Process

1) Divide the roof into a test grid for consistent readings; 2) Take capacitance and probe measurements across each section; 3) Pull confirmation cores in flagged zones where readings are ambiguous; 4) Deliver a moisture map showing wet, marginal, and dry areas with recommendations

What Affects the Cost

Roof size and the density of the testing grid; roof construction and how many layers must be probed; whether destructive cores are needed to verify meter readings; time required to test safely on a steep or slick surface

Best Time of Year

Test after the wet season peaks in late winter to capture worst-case saturation, giving the most conservative and reliable picture of your roof's condition.