Spray-applied fiberglass insulation offers huge benefits over fiberglass batts and even has some advantages over cellulose
Photo Credit: Alex Wilson
We’ve just completed the installation of a relatively new and (at least in New England) little-known insulation material called Spider. As a reminder, the house we are renovating (really re-building) in Dummerston, Vermont has provided an opportunity to try out dozens of innovative products and materials that I’ve long researched and written about in Environmental Building News.
Insulation has been a particular focus of the project, in part because some of the most common insulation materials on the market have environmental or health concerns, including halogenated flame retardants and blowing agents that contribute significantly to global warming.
In previous blogs I described Foamglas, a cellular-glass material, that we installed under the foundation slab and on the outside of the foundation walls, and expanded-cork boardstock insulation that we installed on the outside of above-grade walls spanning over the wood framing. Here I’m covering the third innovative insulation product we used on the project: a spray-applied fiberglass product made by the Johns Manville Company called Spider.