We have R2.5 Rockpool insulation in our stud wall and floor cavities but I'm going to add something like this, in addition, to raise it to around R5. It seems easy to install post-construction, fire retardant, and, when sealed, doesn't require additional parking. It's part of an ongoing improvement project over the next 18 months that includes replacing our aluminium-framed double glazing with LogiKhaus triple glazing.
Has anyone used Foilboard or equivalent?
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