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Many people have concerns about using foam (polystyrene) because of the chemicals used to make the stuff. In fact some of those chemicals are on the Living Building Challenge Red List. So why is foam such a good building material? It's all about R-value. Foam is an incredible thermal insulator. For the price, it's about the ... [Read more]

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The Building Guide is NZ’s independent step-by-step guide for home owners who are building new or renovating, with a comprehensive building product and services gallery.