Bison Frames has added WarmCore patio doors to its existing range of WarmCore windows and bifolding doors.

Mark Tetley, director of Bison, said: “We’re extending our WarmCore range of products because there is an increasing demand for high-end windows and doors. As with the rest of our Genesis Collection range of products, we offer a high-end approach to the manufacture of the industry’s most popular products, and WarmCore is one of them.

“WarmCore already offers all the style, strength and versatility of aluminium, and at Bison we give our customers an even better version of this already impressive product by Graf-welding it for quality and precision.”

Martyn Howarth, director at Bison, said: “It’s not always an easy transition for PVCU fabricators to add aluminium to their offering because it’s a completely different material and manufacturing process. As well as a completely different market. We thought long and hard about adding the material to our portfolio and had been watching the market and researching options for a long time.

“When we saw WarmCore we liked it and had a light bulb moment as to how we could make it better with our Graf-welding expertise.”