Basement Floor Insulation

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Basement Floor Insulation

Post by [email protected] » Wed Apr 03, 2019 12:21 pm

Hello again,
Just wondering about opinions on different types of flooring insulation and finish for a basement. I've looked into Dricore, DMX Airflow, Roberts and straight 1" XPS foam. Is there a need for a barrier under the foam? Can the subfloor go directly onto the XPS foam and does it need to be fasten to the concrete slab?

thanks again

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Re: Basement Floor Insulation

Post by Shannon » Wed Apr 03, 2019 4:10 pm

No barrier should be needed under rigid foam.
Plywood can go directly over foam and should be attached to the floor to prevent movement.

Do a moisture test on the floor to be sure it is a dry floor. Tape a 24" x24" piece of poly to the floor for a couple days to see if it collects moisture. If it does I would use a product like Dricore or DMX to allow some air space.
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