Why does a water heater leak keep the floor wet for so long?
A drain pan holds water in one place, and the floor beneath the pan stays damp after the water is gone. The subfloor and the framing under it dry slowly, and the damp keeps working into the wall above.
Once the water has run into the pan or onto the floor, it stays in the wood and the wall base for a long time. Wood that is wet at its base takes longer to dry than a surface, and the water can keep feeding the wall above it through the bottom plate.
In a closet or garage with the door shut, the air moves little, so the drying is slower. The crew sets equipment to move air across the wet area and reads the moisture until the floor is back to normal.
Is it safe to work on a water heater leak myself?
Not while the unit is powered or connected to gas or water. Turn off the power or gas and the water supply first, and let the technician handle the connections. Repairing the heater is work for a qualified trade.
A water heater holds hot water under pressure and may have gas or electrical connections. A leak can hide a failing component, and a relief valve that drips can release hot water when opened. Handle the unit only to shut it off, and keep your hands away from the connections while the water is hot.
The water crew removes and dries the damage, and a plumber or an appliance technician makes any repair to the heater. The crew will tell you what it has moved and why, so the plumber knows what to expect.
What moves the cost of a water heater leak job?
How long the leak ran, how many surfaces are wet, whether the subfloor or wall is soft and how easily the heater can be moved all decide the job. The price is explained and approved before work starts.
A pan that caught a slow drip for a short time is a small job. A tank that leaked for weeks under a closet floor, with the wall above it also wet, takes more removal and more drying time.
Heaters that are hard to move, placed in tight closets or set on platforms take longer to work around. The crew explains the access, the removal and the drying before it changes the scope, and gives you the scope in writing.
How does the crew know when the closet or garage is dry?
The crew takes readings on the subfloor, the framing and the wall cavity at the start, during and at the end of drying. The space is dry when those readings are back at normal levels in the same places as before.
A closet floor can look dry while the subfloor under the pan is still holding water. The crew checks that spot and the wall behind the heater, because those are the places that take the longest to come back.
Garages and utility rooms in humid weather dry more slowly than rooms that are heated and ventilated. The equipment may run longer for that reason, and the readings are shared with you as the drying goes on.
What should I check after the heater is back in place?
Look at the connections and the pan each day for a week after the work. Check for drips, staining or a damp smell, and call the line if you see any. A small change now is easier to fix than a leak that runs for weeks.
A quick look at the bottom of the tank, the connections and the floor under the pan can show a slow leak early. Keep the area clear so you can see the floor and the pan.
If a relief valve drips, do not block it. Call a plumber to look at the valve and the discharge pipe, and tell the water crew so the drying record can show what was done.
