Fibreglass batting, typically in long rolls, laid end to end across the rafters, is the standard mental image that comes to mind when considering loft insulation. Loose-fill insulation that is stuffed in between the joists is usually a close second. Spray foam insulation, though, is an alternative that isn't often brought up. It's practically the undiscovered gem of insulation materials because...
Sealing off entire attics, walls, and floors with spray foam is possible because of its dual role as an insulator and air blockade. More and more people around the world are looking for ways to increase the energy efficiency of their residential and commercial properties for environmental reasons, and spray foam helps meet that demand. Spray foam isn't fireproof, but it is treated with flame...
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