Safeguard Slimline Bifold Brochure

12 Insulating the home The Stellar Slimline Bifold Door features intelligently designed polyamide thermal breaks that feature low thermal conductivity and legs to break up cavities. It all adds up to a highly insulated bifold door that protects the home from the elements. It also adds up to a door that has a U-value of 1.3 W/m 2 K with 28mm double glazing. Stellar’s Slimline Bifold Door meets the new Part L requirements for thermal efficiency with standard 28mm double glazing.