Froth-Pak Spray Foam Sealant from DuPont is a two-component, quick-cure polyurethane foam that fills penetrations and cracks in rim joists, at roof-wall junctions, and around pipes and ducts. The HFC-free foam seals out moisture, dust, allergens, and pests while its application nozzle reduces overspray. DuPont says the spray foam delivers a global warming potential reduction of more than 99% compared with current formulations. Pricing varies by size. dupont.com
HFC-Free Sealant
