topshot
08-04-2011, 06:05 PM
Greetings!
We're in process of major remodel - almost done. I have one boot that is condensing even though it is still open to the rest of the house that has had the AC running all summer. It is above a false drywall ceiling but open to an adjacent room for now.
I discovered this because another run that had already been closed up with a false ceiling had damaged said ceiling. 2 shorter and smaller diameter runs in the same dropped ceiling don't seem to have the problem (I pray). Or they are also soaking the insulation like the one that is still open has been doing. Thankfully (???), the water has been trapped within the flex sleeve so it hasn't dripped on that ceiling.
I'm thinking my only option to insulate these boots is with Great Stuff since I can't readily access the one I can still see on all sides to tape the seams. I can hardly reach it to feel the insulation.
My real question is how do you seal the "seam" where the flex ends at the elbow? Spray the GS over the exterior a couple inches down? I figure I can drop the boot out of the floor and work through the hole to spray all around it in a few passes and then go around the rim of the boot on the last pass and fasten it back in so the foam forms to the underside of the floor.
Any better options that don't include tearing out a perfectly good ceiling? Right now, I've disconnected the trunk going upstairs so the insulation on these 2 boots can dry.
Oh, and should I do the same on the short, small runs? They used 5" flex but had to use 5-6 adapters since the local supply house didn't carry 5" boots.
We're in process of major remodel - almost done. I have one boot that is condensing even though it is still open to the rest of the house that has had the AC running all summer. It is above a false drywall ceiling but open to an adjacent room for now.
I discovered this because another run that had already been closed up with a false ceiling had damaged said ceiling. 2 shorter and smaller diameter runs in the same dropped ceiling don't seem to have the problem (I pray). Or they are also soaking the insulation like the one that is still open has been doing. Thankfully (???), the water has been trapped within the flex sleeve so it hasn't dripped on that ceiling.
I'm thinking my only option to insulate these boots is with Great Stuff since I can't readily access the one I can still see on all sides to tape the seams. I can hardly reach it to feel the insulation.
My real question is how do you seal the "seam" where the flex ends at the elbow? Spray the GS over the exterior a couple inches down? I figure I can drop the boot out of the floor and work through the hole to spray all around it in a few passes and then go around the rim of the boot on the last pass and fasten it back in so the foam forms to the underside of the floor.
Any better options that don't include tearing out a perfectly good ceiling? Right now, I've disconnected the trunk going upstairs so the insulation on these 2 boots can dry.
Oh, and should I do the same on the short, small runs? They used 5" flex but had to use 5-6 adapters since the local supply house didn't carry 5" boots.