Diagnose Where the Moisture Is Coming From Before You Fix It

Epp Foundation Repair classifies window condensation as cosmetic when basement humidity tests under 50 percent, moderate when basement humidity tests between 50 and 60 percent, and structural when basement humidity tests above 60 percent. The structural threshold matters because sustained humidity over 60 percent supports mold germination on any organic surface (wood framing, drywall, stored boxes) and accelerates wood rot in the sill plate and floor joists over 5 to 15 years. Dave Epp recommends the free humidity inspection before classifying severity rather than assuming the worst or the best.

Epp Foundation Repair anchors pricing to the diagnosed cause. If the basement humidity inspection rules out a basement source, Epp charges nothing and refers to the right trade. Customized Repair Estimate after on-site inspection reflects your scope.

No. Epp Foundation Repair handles basement waterproofing, foundation crack repair, sump systems, drainage, and basement dehumidification. Window replacement is a window contractor's scope. Bath fan installation is an electrician or HVAC contractor's scope. Whole-house humidifier or dehumidifier balancing is an HVAC contractor's scope. Epp tells the homeowner exactly which trade to call, and refers to local installers Epp has worked alongside for two decades.

Sometimes, but Epp Foundation Repair does not recommend dehumidification alone when the underlying cause is below-grade water intrusion. A dehumidifier pulls humidity out of the air after it enters the basement, but it does not stop the water source. The wall continues to wet, energy costs run up, and the unit runs 18 to 22 hours a day trying to keep up. The durable fix is to stop the water source first (interior drainage, crack injection, sump), then size the dehumidifier to maintenance load rather than continuous load.

Epp Foundation Repair maps condensation patterns on every inspection because the pattern tells the diagnostic story. Condensation concentrated on basement and main-floor windows points to basement humidity rising. Condensation concentrated on north-facing or corner windows regardless of floor points to cold-glass dew point. A window performance issue. Condensation on every window in the house points to whole-house humidity from a poorly-vented appliance or a humidifier set too high. The pattern is half the diagnosis.

Epp Foundation Repair sees basement relative humidity drop from 65 to 75 percent down to 45 to 55 percent within 30 to 90 days of an interior drainage and dehumidifier installation, assuming no remaining unaddressed water sources. The upper-floor window condensation typically resolves over the same window. Dave Epp's policy is to return at 60 days at no charge to re-measure humidity and verify the system is performing to expected levels.