Warm spot on the floor in Silverdale, WA

The likely causes here

Start with a recirculation loop fault. On homes with a hot water recirculation pump, a loop running constantly can warm a floor without any leak. Around Clear Creek and Old Town the housing dates from the subdivision boom after the Kitsap Mall opened, which makes this the likeliest answer to warm spot on the floor.

Then a hot line leaking under a crawlspace floor. A pinhole or failed fitting under the subfloor warms the boards above. We've seen it near Old Town more than once, usually on post-mall subdivision poly.

Finally, a hot supply line leaking under the slab. Copper in direct contact with concrete or aggressive fill pinholes over time. Worth five minutes before anyone digs trench walls that slough near Dyes Inlet.

What to check first

On the Ridgetop, Island Lake and Bucklin Hill subdivisions we expect gray poly, and it fails by splitting along the pipe rather than at a fitting, which gives a distinct acoustic signature.

First steps for warm spot on the floor near Anderson Hill Road: close every fixture and watch the water heater: does it fire with nothing running? Don't open the floor at the warm spot before it's located. Confirm the warm area with your hand and note its edges. Then call; the rest is a locate through trench walls that slough near Dyes Inlet, not guesswork.

The fix in Silverdale

When it's the buried line, the fix in Silverdale is interior water leak detection: we thermal and moisture, isolate hot and cold through a winter water table close to the surface at the marked spot on acreage out Anderson Hill Road, and open and repair. Pressure gauges and isolation and the mini excavator ride on the first trip so it's finished the same visit.

Island Lake, Anderson Hill Road, Bucklin Hill: near any of them, warm spot on the floor gets the same crew and the same equipment. Our home base, day or night, with the mini excavator on the trailer for Ridgetop and Island Lake cul-de-sacs.