Bi-Fold Door system allows for expansive openings to be filled in new building designs or within refurbishment projects. The door system allows for up to 11 apertures in combination as full traditional folding door arrangements, or with a single independent door to enable easy access to the property without the need to fully open all door leafs. The door opens into the room. All door leafs are fitted with a combined glazing bead/rain deflector in aluminium on the bottom plane.
FRAME DIMENSIONS
The system has a 109 mm front to back section as standard which also enables it to comply with Passive standards. The system is designed to carry a range of glazing depths from 24 mm double glazing to 48 mm triple glazing units in the Passive
version.
TIMBER
All doors are manufactured from engineered FSC certified softwood timber, which is laminated & finger jointed to provide the highest consistency of quality and stability to our finished frames. A non-finger jointed option is also available at extra cost if required. On request, we can produce frames in Oak or Accoya hardwood, including softwood/hardwood combination frames as a cost effective option.
PAINT & PRESERVATIVE
Using Teknos water based coating systems Norwood timber windows can be supplied in any NCS or RAL colour including dual colour. All timber is treated with Teknos timber preservative to provide protection against wood destroying and wood discolouring fungi, and satisfies the performance requirements of EN599-1.
COLOUR OPTIONS
The standard product colour options is white (NCS S 0502Y) and doors are also available in most recognised RAL or NCS colours including metalics.
GLAZING OPTIONS AND PERFORMANCE
Bi-Folding Doors can be supplied with double or triple glazing, and can achieve a u-value performance as low as 0.73 w/m²K to meet the most demanding thermal standards including Passive. Glass options include toughened safety, laminated, acoustic and/or solar control to meet most projects requirements. Acoustic performance to 44db and g-values to 0.23 are achievable. Windows are supplied pre-glazed* from the factory to guarantee the highest quality and provide optimum technical performance.
*for health & safety reasons very large frames may be supplied unglazed for glazing on site after installation.
HARDWARE & SECURITY
The Bi-Folding door range is manufactured using German designed Roto Royal hardware. Robust in use and low maintenance.
CILLS, COUPLERS, GLAZING BARS AND ANCILLARIES
A large range of cills, couplers, glazing bars and ancillary profiles are available - see separate datasheets for information.