Future Proof Your Composite Door Installations We understand that you want to fit a reliable door and have the confidence that it will stand the test of time; 1. Anti-Bowing technology preventing bowing, warping, twisting & bubbling
2. Weather tested to EN1027 for watertightness
3. 10 Year Warranty
4. Fully U-Value compliant composite door range
5. 19% More thermally efficient than timber doors
6. 3mm Thermal movement tolerance
7. Fast Lead Times
Help Your Customers Save Money On Their Heating Bill 19% More Thermally Efficient Than Timber Doors Hallmark composite doors have been tested in comparison with a 48mm solid timber core composite door and a 44mm timber panelled door. The images below show the thermal efficiency of each door type. Dark blue areas indicate lower heat loss. Red and green indicates higher heat loss.
Hallmark Composite Doors are: • 19% more thermally efficient than the 48mm solid timber core composite door. • 17% more thermally efficient than the 44mm traditional timber panelled door.
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