Slenderpane double-glazed units are very unusual. Manufactured to order for trade customers, handmade in Haddenham, Buckinghamshire and incorporating the latest technology including black, white or grey, warm edge’ super spacers.

As a result when they are glazed into windows or doors, they visually are virtually impossible to distinguish from single-glazed units, but produce much lower heat loss values that comply with current building regulations.

When refurbishing sash or casement windows the aim is usually to retain the elegant appearance of single-glazing with while enhancing thermal and sound insulation.

BSI Certification

Slenderpane insulated glass units meet BSI standard BS EN 1279-3:2002.

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.

Please view the attached certificates for the Insulated Glass Units and Gas Specification.