The Manufactured Housing Forums

I've added new windows and 3/8 plywood to outside walls. I removed old inside panelling and insulation. I replaced with new insulation with paper backing and then added 6mm vapor barrier then 1/2 drywall(just like we do up north in Canada). I've been given conflicting advice and need help. Many have said that this is OK, but others say no and that I must remove the 6mm vapor barrier and put some slashes in the paper barrier because the Florida weather is different from up north and I would trap moisture inside. I leave the air on (85)during the summer while up north. Can someone tell me the correct method for this in Florida. Your cooperation would greatly be appreciated.

Usually in a hot, humid climate such as Florida the vapor barrier goes on the outside. That is because you put it on the warm side of the wall for proper effect. It's usually not a good idea to use both paperback insulation and a plastic vapor barrier either. There is a likelihood of condensation forming between the 2. However, if you leave the thermostat set that high, the interior air temperature should be above the dew point most of the time which should prevent condensation. You can check with the weather service and find out what the dew point typically is in your area in the summer and make sure the thermostat is set above that temperature when you leave.