Re: Re: Restoring sash windows
Sorry S.O.S., forgot about this. Here is the website of the company featured on Grand Designs.
(try to muddle through the desperately written text)
Looking at their product, it’s clear Kevin McCloud was incorrect in describing the glass as being single-glazed – it is in fact double-glazed. Nonetheless, it is still remarkably thin, at only 12mm for the slimmest of units. The perimeter seal is also only 5mm wide, meaning it is invisible when used with a standard 6-7mm rebate in a glazing bar. The type of spacing used also eliminates cold bridging at the edges, common with typical double-glazing. They claim their units can be used for most single-glazed applications.
Problem with those units is they are too heavy for delicate sashes