Slenderpane – Slimline Heritage Double Glazing
At Slenderpane® we manufacture slim glass units, for trade customers only, that allow the use of thermally efficient Slim Double Glazing where normally only single glazing would be allowed by planning and conservation officers.
Comprising only top quality components, the high specification Slim Double Glazed Units (commonly known as slimlite or heritage units) have ultra slim sightlines that allow elegant, traditional fixed glazing bars to preserve the period character of the building, whether listed or within a conservation area.Handmade glazed units
Slim units are most commonly 11mm (4 x 4 x 3), 12mm (4 x 4 x 4) and 14mm (4 x 6 x 4) and sight lines are a standard 7mm or 6mm with the Heritage spacer.
For a quote please complete our Quick Quote form.
Offering a competitive, friendly and efficient service, all our slim double glazed units are made in Britain in our Haddenham workshop in Buckinghamshire.
Slenderpane has been providing slim double glazed units since 2011 and as a leading UK provider take the industry standards extremely seriously. Having worked with Edgetech, who themselves are the leading manufacturer of warm edge technology, our Heritage Sealed Units have been tested and achieved full accreditation in compliance with EN1279 parts 2 & 3.
We have certificates for the our Insulated Glass Units and Gas Specification.
We supply nationwide to joiners, construction companies, architects and indeed anybody in the industry that cares about aesthetics and the preservation of our heritage and buildings.
Slenderpane is proud to support the Florence Nightingale Hospice charity.


Get A Glazing Quick Quote - TRADE ONLY
Complete and send our online "Quick Quote Form" and we will get back to you within 24 hours.
Handmade in Our Workshop
All Slenderpane’s slim double glazed units are handmade in our Haddenham workshop in Buckinghamshire.
We use the latest technology to ensure our consistent high quality with an attention to detail throughout all our products.

Contact Details
Slenderpane Ltd
Units 1-5
Thame Road Industrial Estate
Thame Road
Haddenham
Buckinghamshire
HP17 8BZ
Telephone: 01844 292779
Fax: 01844 292990
Email: sales@slenderpane.com
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