Warm spot on the floor in Port Orchard, WA

The likely causes here

Start with a hot supply line leaking under the slab. Copper in direct contact with concrete or aggressive fill pinholes over time. Around Long Lake and McCormick Woods the housing dates from a century of building, from the 1900s waterfront to the newest subdivisions, which makes this the likeliest answer to warm spot on the floor.

Then a recirculation loop fault. On homes with a hot water recirculation pump, a loop running constantly can warm a floor without any leak. We've seen it near McCormick Woods more than once, usually on poly on the Bethel Road acreage.

Finally, a hot line leaking under a crawlspace floor. A pinhole or failed fitting under the subfloor warms the boards above. Worth five minutes before anyone digs slick Kitsap Formation clay on the hillsides.

What to check first

Out on the Bethel and Sedgwick acreage the problem is length: 200- and 300-foot runs where the correlator is the only practical way to narrow the search.

First steps for warm spot on the floor near Sunnyslope: close every fixture and watch the water heater: does it fire with nothing running? Confirm the warm area with your hand and note its edges. Don't open the floor at the warm spot before it's located. Then call; the rest is a locate through slick Kitsap Formation clay on the hillsides, not guesswork.

The fix in Port Orchard

When it's the buried line, the fix in Port Orchard is interior water leak detection: we isolate hot and cold, open and repair through clay that moves on the Bay Street slopes at the marked spot on long rural driveways toward Sunnyslope, and confirm it's inside. Pressure gauges and isolation and the mini excavator ride on the first trip so it's finished the same visit.

Bay Street, Sunnyslope, Mile Hill Drive: near any of them, warm spot on the floor gets the same crew and the same equipment. A quick run across the Sinclair Inlet bridge, day or night, with the mini excavator on the trailer for steep lots climbing from Sinclair Inlet.