you need to find out were its getting in first in order to stop it, from the top. or up from the floor? test it on a dry day, make sure the booth is dry first, lock the booth , just spray the top of the booth with the garden hose, then check if its wet inside,, the pro use a smoke test to find this out, the lock a smoke machine inside, and fill the booth with smoke, and they can see were its get out, and thats were the water gets in, you could try this too useing josh stickes inside a bottle, if your happy to try that, to fill it with smoke. and were the smoke comes out thats were the rain gets in,
j, February 2015