Crawl Space Retrofit: Rubble Wall with New Interior Drain

Treated 2×4 sleepers with two layers 1 1/2″ rigid insulation

Treated 2×4 sleepers with one layer 1 1/2″ rigid insulation

Interior footer drain at existing slab

Existing band joist insulation retrofit with 1 1/2″ rigid insulation

Existing band joist insulation retrofit with spray foam

Wall section retrofit // interior perimeter drain // radon vent // 1″ rigid interior insulation

Mechanically fastened subfloor over 1″ rigid insulation

Underground Water Barrier Retrofit (Rubber Membrane)

Building Plans for Energy Efficient Basement Remodeling

How to Finish a Basement for Energy Efficiency and Comfort: Details for a basement that insulates against water, weather, and radon gas. There are 23 construction drawings in this basement…