Bricks and sheets of corrugated iron crashed to the ground in Zetland. Picture: Supplied Miraculously no one was hurt as the roof collapsed to the footpath. Picture: Supplied Witness Nayara ...

Because there’s no attic to hold a layer of insulation or create an air barrier, heat can escape through the roof decking or walls, and drafts can creep in through cracks and gaps. Improving ...