i would imagine if your garage is sealed from above and there is no water getting in from anywere you are refering to surface run off water. I had the same problem with my garage. I phoned a local builder who sealing the edges of my garage with a small concrete border and i have had no problem since. It does get damp in there sometimes but not as much as it did before. All I can think of its condenstation build up in the garage.
The room is properly insulated, i run a de-humidifier for a few hours a day but the whole of the garage floor is still wet. After a bit of rain it's horrible. There's no leakages i'm aware of though.
What's with the joke responses? I posted it here because i didn't expect it here.
What's with the joke responses? I posted it here because i didn't expect it here.
What's with the joke responses? I posted it here because i didn't expect it here.