Changes To H1 AS1 Efficiency: What Does It Mean For The Renovator?
Important Vocab R-value: “Insulation requirements are measured by R-value. R-value is a measure of resistance to heat flow. The higher the R-value, the better the insulation.” (Tenancy.gov, 2025) Construction R-value: The value of an entire system. (E.g a R-value of a glass wool insulation may be R2.8, but because of timber framing, the insulation is interrupted […]
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