At Bison frames our goal is and has always been to manufacture some of the finest examples of the vertical sliding sash to be found in the industry. From humble beginnings we have taken the Genesis Vertical Sliding Sash on a journey to be very proud of.
Our philosophy is always quality over quantity.
Always pushing the boundaries of what can be done with a PVC VS Bison were one of the first to successfully develop a fully mechanical window that offers a stunning and realistic alternative to timber. Homeowners and trade customers across the country in conservation areas and listed properties love the attention to detail that comes as standard.
Our investment in a Graf Welder took the product to a new level, was an instant hit and quickly became our standard jointing method !
PAS24 and Secured by Design security accreditations alongside impressive energy performance means this window isn’t just about looks.
Add to this an unlimited choice of colour and you have everything a customer could possibly need.
Hopefully you can see the hard work and dedication that goes into making each and every VS that leaves our factory and your vote would be very much appreciated 😊