Energy Ratings Explained

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Current Part L Building Regulations require a U-Value of 1.8 W/m2k for replacement doors so with a U Value of U1.4 for Double Glazed and U1.0 For Triple Glazed, Warmcore is has far superior thermal efficiency over any standard Aluminium Door

Aspect Doors and Windows Ltd Windows Doo
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25% more efficient as standard
75% more efficient with Triple Glazing
75%
more efficient