Aerosol foam insulation is an option to conventional building insulating material including fiberglass. A two-part mixture composed of isocyanate and polyol resin comes together at the point of a firearm, and forms an expanding foam that’s sprayed onto roof tiles, concrete slabs, into wall cavities, or through holes drilled in into a pit of a finished wall.
This video is targeted to blind users.
Post text available under CC BY SA
Creative Commons picture source in video