Listeners write in about outdoor showers, a Philadelphia carpentry teacher, and the science of hail damage. We ask building scientist Monica Rokicki-Guajardo questions about building performance, HVAC systems, and indoor air quality.

Listeners write in about shade structures, metaphors for air-sealing, and the HVAC industry and ask questions about porch railings, porch flooring, and Japanese footings.

Listeners write in about off-site construction, displaying old walls, and building outbuildings and ask questions about leaky doors, missing flashing, and insulating kneewalls.