Insights
Insulation knowledge for NZ designers, quantity surveyors, and main builders.
Cornerstone articles written by R-Value Insulation Co directors and senior installers. H1 in practice, specified-system substitution risk, the real story behind R-values, and the trade decisions that win or lose a tender.
Compliance
Why you can't just swap insulation in GIB & James Hardie wall systems
Substituting insulation inside a specified wall system can void fire, acoustic, and compliance certification. Here's how to handle product swaps without putting PS3/PS4 sign-off at risk.
4 minJames GuilfordRead articleTrade relationships
Why builders choose trusted insulation subcontractors
Insulation looks like a commodity until it's not. Why experienced site managers stop shopping on price and start working with subcontractors who treat their scope as part of the wider build programme.
3 minJames GuilfordRead articleInsulation fundamentals
What does R-value really mean?
R-value sounds simple: bigger number, better insulation. The reality is more nuanced. Here's what R-value actually measures, how it interacts with the NZ Building Code's six climate zones, and why install quality often matters more than the label.
4 minJames GuilfordRead article
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