I own a home on slab construction.
by
Mickey W.
+8
I read somewhere that insulation can be applied to the slab after the construction is complete, but the articled did not say how or what type. Please help. Thank you.
11 answers
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Slab insulation can be installed using foam board rigid insulation directly against the footing and the exterior of the slab. The theory is per manufacturer: "Even if the foundation walls under the slab are insulated, that will not help much if the slab edge close to the outside air isn't also insulated. ...Slab insulation uses a rigid insulation material: typically foam boards. The installation is easy: just apply the right product with the right r-value under the face of the slab." OK. I'm easy.
James A
on Feb 09, 2011
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I know of no insulation for placing on top of slab. I have placed it under freezer slabs but never on top. Poured Concretes R value is 0.08 per inch. You may be thinking of side walls.
Hudson Designs
on Feb 09, 2011
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You said to install under the face of the slab. My slab is exposed (above the ground and below the vinyl siding. Please explain further...also part of your text collapse at the end. Thank you.
Mickey W.
on Feb 09, 2011
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Styrofoam insulation on those exposed area was code at one time, however; in Ga. the termites found it very cozy and tastey so it is no longer used. Try caulking between the top of slab and bottom wall plate to seal out air.
General Construction and Repair Services
on Feb 09, 2011
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I've install rigid foam on top of basement slabs, using PT sleepers and ply, prior to installing hardwood..I'm assuming your working inside?
KMS Woodworks
on Feb 09, 2011
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If it's the joint between the slab and foundation the best thing is to remove the siding and patch this area with concrete. Also KMS has a great Idea about insulating the floor...
Hudson Designs
on Feb 10, 2011
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Great suggestions! The answer is yes, you can, Mickey.
Brent B
on Feb 10, 2011
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Checkout this Dept of Energy site ,Slab FAQs. Hope this helps. (Believe all my text made it if the "Collapsed" link showed. If it didn't "Expand Text" would show)
James A
on Feb 10, 2011
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Thanks for the info. The sight provided more informative insight.
Mickey W.
on Feb 12, 2011
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Thanks, Brent. I needed a little pat on the back!
Mickey W.
on Feb 12, 2011
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Thanks for your comments.
Mickey W.
on Feb 12, 2011
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