Bi-Folding Door
Glass Specification

Windows Plus Online provides the highest quality glass for all our products.

Clear Glass

Glass is a major part of any product. Windows Plus Online works under the BFRC certification for products, using the ECO inner pane and a clear opti-white toughed glass externally in Bi folding doors, with an overall thickness of a 28mm unit. This achieves a number of things, clarity of the eco glass is second to none and clearness in all light conditions is an important factor in your glass make up.

All A-Rated units are manufactured with argon gas and thermal spacer bar.

All the glass Windows Plus Online manufactures obtain thermal transmittance also known as a U value of 1.2. This is the transfer of heat through a structure divided in temperature across the glass. The building regulations Part I require all habitable areas to have a rating of 1.6U or lower.

Windows Plus Online offer a wide range of decorative options ranging from square lead to face mounted astragal bar in the glass decorative options. Unfortunately, this option is not available in the designer, however, if you would like to order this, please contact us.

Safety glass

There are a number of regulations in regards to safety glass, the main ones to be concerned about are in our part building regulation part N (Integrated into part K) please follow this link to read more information.

The glass thickness changes for the toughened glass depending on the area of the glass, you will find as you are designing products this has been taken into account and it will highlight the glass required to be used, and pricing will change accordingly.

There is an option for laminated glass to be used. This also adheres to the part N (Integrated into park K) under building regulations. The main difference between laminated and toughened is that toughened shatters if broken, laminated holds as one piece when broken and cracks but does not shatter. A mixture of laminated and toughened not only adds to security while being able to achieved the required thermal efficiency.

For more information, please see the technical safety glass information.