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Beautiful, strong and secure windows that are 25% more thermally efficient than the competition
Thermal Upgrade

Triple Glazing for Ultimate Thermal Performance
Choose this option for 75% better thermal performance than standard double glazed aluminium windows.
Fresh Clean Design

Clean modern lines with a refined and understate beauty, Warmcore’s full-width thermal core creates a pristine appearance
Warmer by Design

Warmcore windows combine cutting edge performance with architectural appeal.
More information
Cross Sections
Weather Performance
U-Values
U-Values are used by the construction industry to compare the thermal performance of different materials and products.
Current building regulations require a U-Value of 1.6.
Double Glazing has a U-Value of 1.3.
Warmcore Aluminium windows have a U-Value of 0.8 when combined with triple glazing.
Tilt & Turn
Using multi-point locking and custom designed hinges, tilt and turn windows are as safe and secure as the rest of the WarmCore range.
Flush Sash
Using a stepped outer frame, the sash – the opening part of the window – sites on the same plane as the rest of the window, creating a pure, cutting-edge look. Where two flush sashes meet, WarmCore uses a feature mullion, creating a precise bead link in-between the two windows.
Colour