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Old 06-08-2014, 07:43 PM   #1
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bungalow floor on screwpiles


so, I am building a bungalow on screw pile foundation, 2x10 joists on top of triple 2x12 beams.

What are the various methods of insulating the floor efficiently and effectively?

I intend to build the floor first and then the walls and then install the plumbing through the floor. For the perimeter I intend to have 2x12 insulated panels to the ground.

But for the floor it self where does the poly go in relation to the insulation, and what should I use for protection against rodents and animals getting into the floor? Radon protection?

How to build a properly insulated floor for the harsh Canadian winter?

Last edited by wwsteel; 06-08-2014 at 07:48 PM. Reason: forgot
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Old 06-08-2014, 08:00 PM   #2
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Rigid foam across the bottom to thermally uncouple the framing. The type and thickness may eliminate the vapor retarder level requirements.
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Old 06-08-2014, 08:18 PM   #3
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ok, so basically I would crawl underneath the framed floor and install the strips where I can? what about the places of connection details, like where the joists rest on the beams? Or, should the joists be flush with the beams now?

Sorry, first build.
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Old 06-09-2014, 06:16 AM   #4
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Yes. Time to do this would be before the first platform is on for easy access but it sounds like you are past that.

You can cut and cobble and spray foam quite a bit on the corners to help with the insulation value.
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