Quality Windows, Doors, Bi-Fold Doors and Conservatories to the Trade
Highseal Manufacturing Company
Warmcore Aluminium Inline Patio Doors
Meet the next generation of Aluminium Patio Doors to meet the growing demands for the patio market. Sleek, Stylish and offering flawless operation. The Warmcore patio door utilities the same innovative full-width thermal core technology like our bi-folding doors.
Super Smooth 10 Wheel Roller
A unique, high-quality wheel-set with each sash running on 10 self-leveling rollers to give you ultra-smooth reliable performance.
Innovative Bi-Directional Lock
Designed to our exacting specifications, a bi-directional lock creates a tangible sense of security homeowners love.
Exceptional Thermal Performance
The Warmcore full-width thermal core in the sashes give a double glazed U-value of 1.4 and triple glazed U-value of 1.0 - coupling market-leading thermal performance with the desirability and consumer appeal of aluminium.