Bi-fold Door OptionsJanuary 9, 2017
Glossary of Terms
- UPVC – unplasticicised poly vinyl chloride (or vinyl)
- Composite – PVC, Wood & GRP combined
- GRP – glass reinforced plastic (Fibreglass) similar to car bumpers
- Profile – the design of the frames (thickness etc)
- Air Gap – the distance between the panes of glass in a double glazed window (from 6mm to over 20mm). The wider the more energy efficient.
- Threshold – the bottom of the door (raised or flush)
- Furniture – handles, letter boxes etc.
- Low-emissivity (low-e) – metal oxide coated energy efficient glass
- Gas filled units – some double glazed unit air gaps can be filled with an inert gas (such as Argon) to help improve energy efficiency
- Solar Gain – usually mentioned when the glazing can keep you warm in winter, cool in summer.
- Safety Glass – usually heat treated & tempered to break safely into very small pieces. Should always be used for glazing that reaches ground level.
- Head – the top of the door
Glossary of Terms
- Standard door size – 6 feet 6 inches high x 2 foot 6 inches wide (1981 x 762mm)
- Non-standard is usually just wider not higher (2 ft 9 ins wide or 838mm)
- NFR – non fire rated door
- FD – fire rated door (FD30 last 30 mins / FD60 last 60 mins)
- Beading (beads) – these are the flitting that hold in the door panels or glazing (used to be putty in old wooden windows)
- Core – the internal materials for the door itself
- Handing – for a pair of doors it refers to which door opens first
- Lights – the glass. Example = top light is a glazed panel at the top of the doors
- Veneer – a very thin layer of material that is the surface finish
- Wood grain – a surface finish that mimics the appearance and feel of real wood
- Side Panel – an additional panel used for oversize openings
- Door Jamb – the vertical sides of the door frames