Design Buy Build Issue 45 2020 | Page 19

DOORS, WINDOWS & FITTINGS "As bi-fold doors are likely to link to the outside of the property, it is vital to prioritise security." 3. CHECK THERMAL EFFICIENCY RATINGS Before purchasing bi-fold doors, it is important to consider thermal efficiency. The best indicators of thermal efficiency are U-Values which show the amount of heat lost in watts per square metre of material. The lower the number, the better the thermal efficiency. For instance, Origin doors achieve U-Values as low as 1.2, which far exceeds UK requirements. High quality doors will also feature a polyamide thermal break in the profile, which is designed to improve energy efficiency, allowing homeowners to enjoy the room all year round. 4. PRIORITISE SAFETY As bi-fold doors are likely to link to the outside of the property, it is vital to prioritise security. For maximum safety, check that the system conforms to PAS 24:2016 security standards. Opting for doors that incorporate heavy-duty zinc hinges and a cylinder lock will also ensure that they are resistant to attacks for potential intruders. For ultimate reassurance, homeowners should opt for doors that are accredited with the police-approved Secured by Design standard. For those with young children in the house, we always recommend choosing doors with finger-safe gaskets to stop little hands from getting trapped and magnetic catches that can help hold the doors in place whilst you’re operating them. For more tips on choosing the right bi-fold doors for your home, visit our Advice Centre www.origin-global.com/ advice-centre 19