Glass wool insulation is a very effective insulation, mainly for dry areas of the country,' says Matt Balducci, co-owner & CEO of HomeHero Roofing. 'The major "pro" of this material is that it ...
Area \(\percent\) heat loss Method How it works Roof 25 ... air between glass or mineral wool fibres reduces heat loss by conduction and convection. Walls 35 Cavity wall insulation fills the ...