WHS Halo’s unique thermal inserts allow higher WERs to be achieved in a simple, cost effective way.
The inserts slide into the outer frame profile and subdivide the main profile chamber into equally spaced sub chambers. This significantly reduces the convection/air circulation within the profile to provide lower U-values and greater thermal efficiency.
Fabricators and installers have found they can achieve WER A ratings, even with large outer frames, by using a thermal insert in combination with low U value glazing units. So successful has this innovative technology proved that WHS Halo’s range of inserts has now been expanded to include solutions for 70mm profile.
Sales and Marketing Director Dave Mulholland comments: “A thermal insert more than compensates for the reduction in solar gain that results from using a large outer frame. A typical casement with a large outer frame has a solar gain of 42%, which is 3% less than a comparable 56mm frame casement. Normally, this would lead to a lower WER rating but a thermal insert will lower the frame U-value by an amount that more than offsets this effect.
“The thermal inserts are another example of our continuing investment in innovative new products. It indicates our commitment to our customers and to helping them grow their business in sensible, sustainable ways. It also confirms our commitment to the industry and our determination to play a leading role.”
Suitable for use with System 10 70mm as well as 62mm systems, the inserts can be used with 56mm and 72mm upstand outer frames. Wherever possible, the inserts are cut and welded together within the outer frame for maximum thermal efficiency.
WER A ratings can be achieved with small outer frames, when using a 28mm double glazed K glass unit. With large outer frames an A rating can be achieved by using a 28mm soft coated unit, with a Duralite, Superspacer or Swisspacer bar.
WHS Halo first introduced its thermal insert technology for small outer frames in 2008.
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