Using traditional materials such as mineral wool ... is a very effective insulation, mainly for dry areas of the country,' says Matt Balducci, co-owner & CEO of HomeHero Roofing.

If you want your home to hold more heat or reduce your energy bills, spray foam insulation is often touted as an alternative to traditional building insulation, such as mineral wool or fibreglass.

Area \(\percent\) heat loss Method How it works Roof 25 Insulate ... Walls 35 Cavity wall insulation fills the cavity between the outside walls with mineral wool, polystyrene beads or foam.