ULTRA

ULTRA triple glazed timber oak entrance door at low energy selfbuild project Yorkshire

Triple glazed timber entrance doors for low energy & Passivhaus projects. The same design as the PERFORMANCE range but with 98mm profile and insulated frame option. U value as low as 0.56 W/m2K.

Please see some sample styles above. If you can’t see the style you’re looking for, please get in touch, as everything we do is bespoke and made to your requirements.

Please note: Door panel options include standard flat, grooved or raised and fielded

Glazing & U values

Fully glazed door:

Whole door UD: 0.79 W/m2K Redwood

Whole door UD: 0.89 W/m2K Oak

Glazing U value Ug: 0.52 W/m2K

Triple unit: Argon fill 52 mm

Light transmission value: 74.1%

Fully panelled door:

Whole door UD: 0.83 W/m2K Redwood (Standard Kooltherm panel)

Whole door UD: 0.56 W/m2K Redwood (VIP panel option)

Whole door UD: 0.67 W/m2K Oak (VIP panel option)


Typical maximum sizes

Width: 1250 mm

Height: 2400 mm

Please note: For Part Q and Secured By Design items,  there may be size restrictions. Please get in touch to discuss. 


Test results

Air Permeability BS EN 12207: 600 Pa Class 4

Water tightness BS EN 12208: 200 Pa Class 5A

Wind load BS  EN 12210: 1200 Pa Class C3

Exposure category BS 6375-1: 1200

* U values calculated for standard single doorset 1230 X 2180

 

Most handles are compatible with our windows and doors so if you are looking for something a bit different to what is shown please get in touch with the windows team and we will be able to find something to suit your needs.


Affiliations & Accreditations