Listed Buildiing slim double glazed units

U Values

Thermal Values

Slenderpane slim double glazed units can achieve a range of u values to suit the nature of the project.

These range from 1.9 W/m2K u value soft coat low E glass and Krypton gas and this goes down to 1.0 u value depending on the cavity and glass used .

Sightlines of our warm edge spacers do not affect the thermal value and these are 8mm (Heritage), 8mm (Standard), 9mm or 11mm if required.

N.B. We recommend that a minimum of 3mm o/a is deducted from the tight size of the opening to arrive at the unit size.

The lower the u value the better the thermal efficiency of the unit.

U Values
Below normal soft coat with normal fill rate. Light transmission 80%
U Values 80% light transmission for double glazed units
Below soft coat 1 with normal fill rate. Light transmission 76%
U Values for 76% light transmission for double glazed units

Social Media

Opening Hours

Monday - Thursday: 8.30am - 5.00pm
Friday: 8.30am - 4.00pm
Saturday, Sunday & Bank Holidays: Closed

Slenderpane's Workshop Showroom visits for Trader customers are by appointment only.

We are proud to be sponsors of the Florence Nightingale Hospice Charity

Florence Nightingale Hospice Charity

Contact Form