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Right – Slab seams are sealed with a self-leveling sealant.

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Right – All seams in the sub-slab vapor retarder were sealed with tape.

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Right – Apply caulk at the slab-to-wall joint to reduce pest intrusion

Right – Apply caulk at the slab-to-wall joint to reduce pest intrusion

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Reinforce concrete slab and foundation walls to minimize future cracks that could let in pests

Reinforce concrete slab and foundation walls to minimize future cracks that could let in pests

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Install termite shields and use solid concrete or filled concrete block for the top of foundation walls to deter termites and other pests

Install termite shields and use solid concrete or filled concrete block for the top of foundation walls to deter termites and other pests

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Sump Pump Cover Gasket

Guide

Guide describing how to install an airtight cover on a sump pump in the basement or crawlspace of a home to minimize humidity in the home.

Rigid Foam Board Interior Insulation for Existing Foundation Walls

Guide

Guide describing how to insulate closed crawlspace walls and band joist areas with rigid foam board insulation.

Easy access

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Well insulated slab

Well insulated slab

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Slab-on-grade radon control techniques

Slab-on-grade radon control techniques

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This exterior insulated slab-on-grade monolithic grade beam foundation is protected from pests by termite shield at the sill plate, borate-treated framing, flashing at end of wall insulation, brick veneer over slab-edge insulation, and rock ground cover.

This exterior insulated slab-on-grade monolithic grade beam foundation is protected from pests by termite shield at the sill plate, borate-treated framing, flashing at end of wall insulation, brick veneer over slab-edge insulation, and rock ground cover.

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Slab-on-grade with concrete stem wall and slab insulation

Slab-on-grade with concrete stem wall and slab insulation

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Post-tensioned slab-on-grade with exterior and slab insulation

Post-tensioned slab-on-grade with exterior and slab insulation

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Slab-on-grade with integral grade beam with exterior insulation

Slab-on-grade with integral grade beam with exterior insulation

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Structural system components of slab-on-grade foundation with grade beam

Structural system components of slab-on-grade foundation with grade beam

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Drainage techniques for slab-on-grade foundations

Drainage techniques for slab-on-grade foundations

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Slab-on-grade with masonry stem wall and interior and slab insulation

Slab-on-grade with masonry stem wall and interior and slab insulation

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Slab-on-grade with concrete stem wall and under slab insulation

Slab-on-grade with concrete stem wall and under slab insulation

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Slab-on-grade with concrete masonry stem wall and exterior insulation

Slab-on-grade with concrete masonry stem wall and exterior insulation

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Slab-on-grade with integral grade beam and exterior and slab insulation

Slab-on-grade with integral grade beam and exterior and slab insulation

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A concrete slab floor can be elevated above local grade as a strategy to prevent flood damage.

A concrete slab floor can be elevated above local grade as a strategy to prevent flood damage.

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A concrete slab-on-grade foundation with exterior insulation, which can be elevated above the local grade as a flood-prevention strategy.

A concrete slab-on-grade foundation with exterior insulation, which can be elevated above the local grade as a flood-prevention strategy.

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Water Management of Existing Basement Floor

Guide

Guide describing how to retrofit an existing basement floor or slab to reduce moisture issues.

Right - Additional potential locations for slab-on-grade insulation include (a) under the slab and outside the perimeter with optional underground moisture block, (b) under the whole foundation, or (c) on top of the slab.

Right - Additional potential locations for slab-on-grade insulation include (a) under the slab and outside the perimeter with optional underground moisture block, (b) under the whole foundation, or (c) on top of the slab.

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Right - Potential locations for slab-on-grade stem insulation in new construction: slab insulation should always be underneath, with stem walls insulated (a) inside, (b) outside, (c) not at all, or (d) outside with underground extension to repel moisture.

Right - Potential locations for slab-on-grade stem insulation in new construction: slab insulation should always be underneath, with stem walls insulated (a) inside, (b) outside, (c) not at all, or (d) outside with underground extension to repel moisture.

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Insulating Crawl Space Floors in Existing Homes

Guide

Guide describing how to upgrade a crawlspace floor in an existing home by adding insulation.

Turned down concrete slab - 1 inch rigid insulation

Turned down concrete slab - 1 inch rigid insulation

CAD File

Turned down concrete slab - 3/4 inch rigid insulation

Turned down concrete slab - 3/4 inch rigid insulation

CAD File

Turned down concrete slab - 1 1/2 inch rigid insulation

Turned down concrete slab - 1 1/2 inch rigid insulation

CAD File

Radon Fan

Guide

Guide describing how to install a radon mitigation fan to actively remove radon from the home.