Wet Carpet but No Visible Leak? 6 Hidden Causes in Arlington Homes

Wet carpet with no visible leak usually comes from 6 hidden sources: a slab leak under the floor, a supply line inside a nearby wall, the AC condensate line, a toilet or tub leaking into the subfloor edge, water coming in under an exterior wall, or a leak at the water heater closet. A water meter test tells you quickly if a pressurized pipe is leaking. Call (817) 285-5426.

If the meter moves, call our leak detection Arlington TX team. We find the leak with acoustic and thermal tools before anyone pulls up the floor.

What are the 6 hidden causes?

1. A slab leak

A pipe under the concrete pushes water up through cracks in the slab and into the pad. The spot may feel warm if it is a hot water line. See the slab leak signs guide.

2. A pipe inside a wall

Water runs down inside the wall and wicks out under the baseboard into the carpet edge.

3. The AC condensate line

In summer, a clogged or cracked drain line from the indoor AC unit can soak the carpet near the closet or hall. Read about AC drain line leaks.

4. Toilet, tub or shower

A failed wax ring or a cracked shower pan lets water travel under the floor into the next room.

5. Water coming in from outside

After heavy rain, water can come in under a door or a low exterior wall, especially where soil slopes toward the house.

6. The water heater closet

A slow drip from the relief valve or tank base can spread under the closet wall.

How can you narrow it down?

1. Do a meter test. Turn off every tap, then watch the meter's leak dial for 15 minutes.
2. Check after rain. If the spot only appears after storms, it is likely water from outside.
3. Turn the AC off for a day. If the spot dries, it is the condensate line.
4. Feel for warmth. A warm patch points to a hot water line under the slab.
5. Use the toilet dye test. See the toilet leak test guide.

When should you call for leak detection?

Call if the meter moves with everything off, if the wet spot grows, if it feels warm, or if you smell mildew. Basic leak detection in Arlington runs about $150 to $400, and slab leak detection about $250 to $600. Fast drying matters too, because carpet pad can grow mold in a day or two.

If a pool line runs near that side of the house, also rule it out. Our pool leak detection arlington tx visit checks buried pool lines.