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An installation guide to slab edge insulation that meets the mandatory 2018 IECC code requirements C402.2.4 and R402.2.10. The blue below represents R-10 insulation.

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An installation guide to slab edge insulation that meets the mandatory 2018 IECC code requirements C402.2.4 and R402.2.10. The blue below represents R-10 insulation.

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TRIM BOARD (bsmt finish)

5”

8”

Note: Consult with your structural engineer regarding reducing width of stem wall to 5”.

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An installation guide to slab edge insulation that meets the mandatory 2018 IECC code requirements C402.2.4 and R402.2.10. The blue below represents R-10 insulation.

Protective flashing to cover insulation

Min 10” below grade

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An installation guide to slab edge insulation that meets the mandatory 2018 IECC code requirements C402.2.4 and R402.2.10. The blue below represents R-10 insulation.

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Protective flashing to cover insulation

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An installation guide to slab edge insulation that meets the mandatory 2018 IECC code requirements C402.2.4 and R402.2.10. The blue below represents R-10 insulation.

Drawings directly above: Insulation does not meet minimum code requirement.

R402.2.10 Slab-on-grade floors. …the insulation shall extend downward from the top of the slab on the outside or inside of the foundation wall.