Leaking drainpipes in a shower or a bathroom plug will let water underneath tile.
Concrete floor under leaking toilett.
The best way to tell if this is your problem is to push down on the floor around the drain.
How to find the source of a leaking tub drain.
I had a similar problem the cause was a very small leak where the pipe joined the tap in a sink about 25ft from where the wet patch appeared.
Loosen the nut that attaches the supply line to the tank and it should slide out easily.
If they are too corroded to turn use a hacksaw to cut the bolts.
Another way to tell is to examine the drain from underneath which can be accomplished in the crawlspace or the basement.
In the case of a tub set on a concrete slab the leak will ruin flooring in the bathroom or adjoining rooms.
Signs of trouble bathtub drain leaking.
If you have wood panel floors watch out for spots where the wood starts to warp.
If the subfloor is spongy under your leaking toilet the toilet may have started to wobble and the problem is quickly going to get worse unless you make a fairly major repair.
Water will find a way under the concrete and rise when it finds space ie.
Slab leaks create water build ups underneath your concrete foundation.
If your toilet has been leaking there is a danger the wooden subfloor will be damaged as a result.
To escape this water may pool on top of your floors yard or the concrete itself.
If you have carpeted floors search for areas that look darker or are unexpectedly damp.
This wax ring seal is positioned between the toilet and the floor.
Under every toilet is a large round wax seal.
With a wrench loosen the toilet mounting bolts or tee bolts that hold the toilet to the floor.
Place the nozzle of the open caulk tube in the crack between the toilet base and the top of the floor.
If it gives this may be the problem.
Disconnect the water supply line from the toilet tank.
Water stains on the ceiling or joists below.
Loose flooring near the tub or damp floors in adjoining rooms if the tub is on a concrete slab.
The process to repair the subfloor is not easy but it needs to be handled promptly to avoid further damage to the wooden floor below which could eventually result in the toilet falling through.
Squeeze the handle as you drag the gun along the base to deposit a thick bead of caulk to the.