For period properties and conservation areas
Slimline heritage units
Ultra-slim insulated units that replicate the look of single glazing while bringing a period window up to modern thermal standards. Typically used in listed buildings and conservation areas.
- 25 years making IGUs
- Sightlines maintained
- Krypton or argon filled
Sympathetic glazing
With a heritage window the job is to create harmony between the existing building, the new frame and the new glazing. Our slimline units are thermally efficient, made with precision, and keep the sightline the conservation officer asked for. We think they are some of the neatest slimline units available.
Why krypton
A slimline unit has a cavity of 4 to 8 mm, where argon does little. Krypton is far denser and performs well in exactly that range, so it is the usual fill in our heritage units when the lowest U-value matters.
Heritage range
- Internal and external glazing
- Available toughened
- Available laminated
- Decorative and stained options
- Krypton gas filled
- Argon gas filled
- Made in Barnsley
Related
Fitting traditional windows?
We supply many trade customers who make and fit period windows. Send us the sightline and the rebate.