ULTRA triple glazed timber windows and doors - Green Building Store Green Building Store


ULTRA triple glazed timber windows and doors at low energy selfbuild project Yorkshire

U values as low
as 0.68 W/m2K

Nationwide fitting
or supply only

Passivhaus certified
insulated frame option

Part Q compliant and
Secured by Design options

Ideal for Passivhaus and ultra
low energy projects

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

FSC® certified Redwood or
Oak timber as standard

Our ULTRA windows and doors are ideal for low energy and Passivhaus projects.

The ULTRA range offers a Passivhaus certified window option with insulated frame and low U values at a competitive price.

Our ULTRA windows and doors are available in the following styles:

Casement window

PERFORMANCE outward opening casement window

Tilt & turn window

PERFORMANCE inward opening triple glazed window

Entrance door

Featured Image: Green Building Store ULTRA triple glazed timber door

Contemporary door

BL05 ULTRA Contemporary

French doors

PERFORMANCE French Doors at Arts and Crafts style house

Sliding doors

Green Building Store PERFORMANCE triple glazed timber Lift and Slide door

Bi-fold doors

Triple Glazed timber bifold door at Four walls retrofit

Affiliations & Accreditations