...luxury subframe system has a wrap around wooden frame that enables you to be able to reveal fix or face fix your secondary glazing. The wooden subframe system has a nicer, cleaner finish than the aluminium flange of the Economy Odd Leg system, which makes it more suitable for use in domestic environments ...
The Economy Odd Leg system is slightly quicker to fit and comes at a slightly reduced cost when compared to the Luxury subframe system - you have around the same amount of aluminium but save on the wooden subframe. This could save you a substantial amount of time and money on a commercial job of 200+ windows
When installing secondary glazing it is preferable to have an optimum air gap between your secondary and your existing window of between 100mm and 200mm glass-to-glass, where possible. The gap improves the acoustic and thermal performance of your secondary unit. Reveal fixing your secondary glazing is by far the easiest way to achieve this air gap. Read more
Wrapping the aluminium frame, the wooden subframe gives increased sound and thermal insulation. Three depths are available; slim SF1, deeper SF3 or the deeper still SF4 - the choice of which is guided by the fixing method (face or reveal). Subframes come in MDF, Tulip (a pale hardwood) or solid Oak (hardwood). The cheapest option, MDF, is easy to trim and paint where as the hardwoods can be varnished, oiled, stained or painted for a nice wood finish.
SF1 Subframe Face Fix, most commonly used, screwed into existing windows.
SF3 Subframe Screws into wall surround (reveal fix), protrudes 16mm. Can also face fix secondary glazing directly to existing windows (extra depth keeps secondary window away from existing handles). Our unique triple track horizontal sliding secondary utilises the SF3 for face fixing or SF4 Subframe for a reveal fix. SF4 protrudes out 15mm.
Please note: If you wish to order our SF4 extra deep subframe (for reveal fixing our triple track) - you can not currently quote for it using the online estimator. Also if you wish to have your subframe pre-drilled you need to state this at the time of order.
Cover trims are used to hide the fixing screws and provide a nice clean finish for your Secondary Glazing. We offer a range of trims in a range different finishes, including plastic trims, unpainted tulip, primed tulip and solid oak. There are five different trims available in different shapes and sizes, each suited to different applications:
| Specifying - Suitable Applications | |
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Please note: Glass specified must comply to the glass safety BS 6262: Part 4, 1994 regulations. (see document downloads) |
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| General Downloads | |
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 5.5 Mb | |
0.3 Mb | |
(Where you must use safety glass and what is considered to be safety glass) | 1 Mb |
| Technical Downloads | |
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0.5 Mb | |
0.4 Mb | |
1.0 Mb | |
0.2 Mb | |
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