Learn Insulation In an Hour: Part 2

Spray foam insulation sounds straightforward until you hear the questions homeowners and inspectors actually ask: Can it trap moisture and hide rot? Why did some historic buildings overseas push back on it? Is open cell spray foam safer for older structures than closed cell? We get into the details with Rich Brown of Prime Energy Group and focus on what matters in the field, not just on paper: drying potential, leak detection, and how your insulation choice can protect or punish the materials inside your walls and roof. We also talk about the everyday homeowner side of the job, including how to prep an attic so installers can properly cover the roof deck, why spray angle and access matter, and what changes when you turn a vented attic into a sealed attic. That leads into the questions around fire ratings and why “no storage” rules often come down to how an attic could be used, not whether foam is automatically dangerous. Rich shares how open cell foam behaves under direct flame, how tested attic configurations manage pressure, and a striking real-world story where foam helped prevent a lightning-related fire from turning catastrophic. Then we zoom out to comfort and livability: why spraying the roofline can keep HVAC equipment out of 140-degree attic heat, how pull-down stairs can become a major air leakage weak point, and what spray foam can and cannot do for sound control. From homes under flight paths to busy roads and shared interior walls, we cover strategies that produce quieter results in the real world. If you found value here, subscribe, share this with a homeowner or builder, and leave a review with your biggest insulation or comfort question for a future show.