siggy_7
Full time tool collector, part time woodworker
Hello everyone. I've got some Landvac vacuum glazing units on order which I plan to fit into some new accoya windows for an extension I'm building. The rest of the property has relatively tired timber framed double glazing (stormproof casement style) and I plan to make and fit similar windows to those I'm going to be making for the extension to the rest of the house in the future. I've gone the vacuum glazing route partly because of the superior thermal performance even compared to triple glazing without having to go super-thick on the units and partly because I just like the high-tech nature of the product.
The query I have, particularly for those in the window making business, is whether it's necessary to get the Landvac units made into a thicker glazing unit (this is called Landvac Optimum (or hybrid), where the double glazed vacuum unit is used in place of a single outer pane of an otherwise conventional double glazing unit) or whether I can just fit the thinner (8.3mm unit thickness) units into the sashes. As the window design is a stormproof casement with friction stays and espagnolette openers, the sash will need to be relatively thick sectioned anyway, but I can accommodate this just by having a relatively shallow glazing rebate of say 25mm or so and a deeper inner frame section. The supplier mentioned that the hybrid units are made to achieve BS1279 compliance, without elaborating what this is and why making up the hybrid unit would help. Any pointers much appreciated. Thanks in advance!
The query I have, particularly for those in the window making business, is whether it's necessary to get the Landvac units made into a thicker glazing unit (this is called Landvac Optimum (or hybrid), where the double glazed vacuum unit is used in place of a single outer pane of an otherwise conventional double glazing unit) or whether I can just fit the thinner (8.3mm unit thickness) units into the sashes. As the window design is a stormproof casement with friction stays and espagnolette openers, the sash will need to be relatively thick sectioned anyway, but I can accommodate this just by having a relatively shallow glazing rebate of say 25mm or so and a deeper inner frame section. The supplier mentioned that the hybrid units are made to achieve BS1279 compliance, without elaborating what this is and why making up the hybrid unit would help. Any pointers much appreciated. Thanks in advance!
