#689: Basement Garages, Compact ERVs, and Safer Paint Stripper

For radon mitigation in new construction, plan for a sub-slab depressurization system as it's inexpensive and effective, potentially adding an in-line duct fan if initial tests show elevated levels.

When insulating a tuck-under garage, prioritize a robust air seal between the garage and living space to prevent harmful fumes from entering the home, and consider mineral wool bats for insulation.

Install 5/8-inch drywall for fire separation in garages, especially when living spaces are above, as it offers a higher fire rating for minimal additional cost.

Avoid parking cars or storing combustion engines in attached or under-house garages to prevent toxic fumes and Hvac system contamination; consider relocating or converting these spaces.

While single-room ERVs offer an alternative for retrofits or small spaces, a well-designed and balanced ducted ERV system typically provides better whole-house control and filtration.

When using any paint stripper, always assume the presence of lead paint and wear appropriate respiratory protection; dispose of chemicals properly through designated hazardous waste programs.