Wet Floor Problem

Geezer1000

I have a large workshop built about 6 years ago. I have always had the problem of wet floors. This happens during damp, wet weather. The walls are dry, and the roof isnt dripping (non drip sheets). I am at a total loss as to how to tackle this. Could anyone throw some light on the subject please.

BryanF

Geezer1000 wrote: »

I have a large workshop built about 6 years ago. I have always had the problem of wet floors. This happens during damp, wet weather. The walls are dry, and the roof isnt dripping (non drip sheets). I am at a total loss as to how to tackle this. Could anyone throw some light on the subject please.

DPC? leak from water/waste pipe? external ground level?

Poor Uncle Tom

Geezer1000 wrote: »

I have a large workshop built about 6 years ago. I have always had the problem of wet floors. This happens during damp, wet weather. The walls are dry, and the roof isnt dripping (non drip sheets). I am at a total loss as to how to tackle this. Could anyone throw some light on the subject please.

Could it be condensation, I have seen similar on the floors of classrooms, it was cleared up by properly ventilating the areas after use each day.

mickdw

If it has been built off a flat slab, you will likely get water entering at the base joint.

Geezer1000

Poor Uncle Tom wrote: »

Could it be condensation, I have seen similar on the floors of classrooms, it was cleared up by properly ventilating the areas after use each day.

Def not condensation

mickdw wrote: »

If it has been built off a flat slab, you will likely get water entering at the base joint.

I have no idea what you mean. Im not a builder so im not up on the lingo

sonofsteptoe

mickdw wrote: »

If it has been built off a flat slab, you will likely get water entering at the base joint.

I agree, alot of workshops/ sheds were built like this as a cheaper alternative to foundations and rising walls or a shuttered step in the slab.
The dampness can be caused by rainwater coming down the outer wall and hitting the slab where it protrudes past the blockwork (even 1/2 inch) making its way inwards.

If this is the case, Watch where the damp spot first appears and mark it.(it could be happening in a couple of areas When it stops raining go outside look in the coresponding area, if you can see any slab protruding past the blockwork/sheeting Kango it off and check inside when it rains again. Not an ideal solution but it might do the Job

BryanF

OP, get a hand-held moisture meter, they cost about 20€ and follow the leak to its source