Originally Posted By: Donald
Originally Posted By: 757guy
I live in Minnesota where it can get windy and really cold. I used the expanding foam on my rim joists around the entire basement. Don't waste your time with foam board - use expanding foam to penetrate and seal every possible crack and opening. I did my whole basement using that stuff and then sprayed the bottom of the subfloor between joists to provide sound insulation from the wood floors above. The unexpected benefit was how solid and quiet the floors seemed when you walked on them; It quieted the floors from both sides.
The product is used was Green Foam which came in 2 large canisters that were the same size as propane tanks. Because of the size of my project, I had 4 of those canisters (they come in pairs and are mixed via hoses that blend the product at the nozzle.) I also ordered a Tyvek Suit and goggles. It's messy - but you get the best possible seal and insulating qualities that you cannot duplicate any other way. Hindsight being 20/20 - I wouldn't do it any other way.
Good luck!
What tricks are there with the foam? How many joist boxes can a set of tanks do? How long between first use and when the system is too old to use? What about temp?
Take a look here - should answer your questions: https://sprayfoamkit.com/videos-a-how-tos/rim-joist-sill-plate/
Originally Posted By: 757guy
I live in Minnesota where it can get windy and really cold. I used the expanding foam on my rim joists around the entire basement. Don't waste your time with foam board - use expanding foam to penetrate and seal every possible crack and opening. I did my whole basement using that stuff and then sprayed the bottom of the subfloor between joists to provide sound insulation from the wood floors above. The unexpected benefit was how solid and quiet the floors seemed when you walked on them; It quieted the floors from both sides.
The product is used was Green Foam which came in 2 large canisters that were the same size as propane tanks. Because of the size of my project, I had 4 of those canisters (they come in pairs and are mixed via hoses that blend the product at the nozzle.) I also ordered a Tyvek Suit and goggles. It's messy - but you get the best possible seal and insulating qualities that you cannot duplicate any other way. Hindsight being 20/20 - I wouldn't do it any other way.
Good luck!
What tricks are there with the foam? How many joist boxes can a set of tanks do? How long between first use and when the system is too old to use? What about temp?
Take a look here - should answer your questions: https://sprayfoamkit.com/videos-a-how-tos/rim-joist-sill-plate/
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