Proven in use since 1979 - in locations ranging from prestige city centres to rural hillsides exposed to the worst of the weather - IG Original doors are truly outstanding.

Local authorities, housing associations, national major house builders and developers have all chosen to combine the visual appeal of traditional panelled doors with the energy-saving, easy-care characteristics that make IG Original doors such high performers. They meet the exacting standards of newly-built homes and provide an aesthetically acceptable means of improving the thermal performance of entry systems in older properties.

IG Original doors offer a long-lasting, low maintenance solution to the bowing, cracking, splitting and warping problems inherent in timber doors. IG Original doors consist of two 24 gauge galvanised steel surfaces permanently bonded to a rigid polyurethane core and glued around timber stiles. To ensure maximum effectiveness with minimum site labour, they can be supplied as complete systems comprising doors pre-hung in frames fitted with weathersealing components. To provide a door to suit every type of dwelling, the range provides a wide variety of glazing options (see Decorative Glazing) and matching sidelights. Door units can be supplied with a range of IG standard ironmongery (see Locks and Lever Furniture) or customised to accept individual specifications. A range of frame and sill options is available (see Frame and Sill Details).

Door Construction
The IG Original door is robustly constructed from two 24 gauge galvanised steel surfaces permanently bonded to a CFC and HCFC free rigid polyurethane core, having an ozone depletion rating of zero, and glued around timber stiles. The steel skins have smooth external and internal faces. The Steel Woodgrain range is constructed in the same way except the skins have an embedded woodgrain texture to both external and internal faces.

Thermal Performance
IG doors have a U-value through the door of 0.55W/m²K, equivalent to approximately four timber doors.

Sound Insulation
Assessment carried out by A.I.R.O. (Acoustical Investigation and Research Organisation) indicated that the IG door system should be capable of achieving an average sound reduction index (100-3150Hz) of 28 db.

Fire Resistance
(See Internal Half-Hour Fire Doors.)

Decorative Glazing Options
Doors can be given extra visual appeal by the use of decorative glass, including coloured and leaded options, to replace the standard and obscure glazing.
(See Decorative Glazing.)

Ironmongery
(See Locks and Lever Furniture.)

Paint Finishes (internal and external panels)
Standard finish is primed ready for site painting. Factory Finish is an optional extra in a choice of standard colours. Any British Standard colour can be matched to special order.

Timber Effect (internal and external panels)
All doors in the IG Steel Woodgrain range have a natural woodgrain texturing and are available in the following optional finishes.

MAHOGANY	WALNUT	OAK