SHOULD I I NSULATE I T?

Popular Mechanics (South Africa) - - The First Story -

EX­TE­RIOR WALLS: YES

While it is pos­si­ble to in­su­late in­side brick walls if they have a cav­ity, in-wall in­su­la­tion is even more im­por­tant if you have a steel­frame pre­fab house with hol­low walls. Fi­bre­glass in­su­la­tion should be in­stalled

ROOFS: YES

The best time is when the roof is be­ing built, nat­u­rally, and it’s legally re­quired in SA, so most houses will have in­su­la­tion there. Spray-foam or spray-in cel­lu­lose fi­bres can eas­ily be added later, if nec­es­sary. (

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