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Spacer Bars, Document L, Energy Efficiency and Triple Glazing

Thermoseal Group Limited News and PR from Thermoseal Group Limited - Published 28 January 2020 Mark Hickox, Thermoseal Group’s Sales Director shares some of the Group’s insight.
Thermoseal Group, the UKÂ’s leading manufacturer and supplier of the largest volume of spacer bars for insulated glass (IG) sealed unit production, gives an insight into the spacer bar market and predicted future trends.

Spacer bars, used primarily to space the panes of glass in double, triple and even quadruple glazing, have seen significant development and a change in market demand over recent years. There has long-been a widespread decline in the demand for Aluminium spacer bars and an increase in the demand for more energy efficient warm edge spacers which has primarily been brought about by changes in legislation dictating improved energy efficiency in windows.

Mark Hickox, Thermoseal GroupÂ’s Sales Director shares some of the GroupÂ’s insight.

“Going back ten years, the vast majority of the UK spacer market was for Aluminium spacer. Despite the high level of promotion of warm edge spacers as a market differential, there was only a small market for warm edge spacers until revisions to Document L dictated improved U-values and influenced the introduction of the Window Energy Rating (WER) Scheme. Since then, the strive for ‘A’ rated WERs and now ‘A+’, ‘A++’ and in some cases even ‘A+++’ rated windows has influenced the specification of warm edge spacers and any window components which contribute towards increased energy efficiency.

“In 2008, we started developing two of the most energy efficient spacer bars available on the worldwide market – Thermobar warm edge spacer tube and Thermoflex flexible warm edge solution. Since then, our trend in sales has seen a continual decline in Aluminium and increase in the demand for our market-leading warm edge spacer bars.

“We supply to the majority of UK IG sealed unit manufacturers and current warm edge sales account for approximately 77% of our spacer bar sales. We foresee sales of Aluminium continuing to decrease as the demand for warm edge spacer bars grows.

“There is likely to be further increase in the UK demand for warm edge spacers and other more energy efficient insulated glass (IG) components which could be escalated by revisions to document L - the current consultation document suggests solutions which may require the specification of triple glazing in new properties. Should this go ahead, the requirement for triple glazing will mean a significantly higher volume of spacer bar and fittings within each IG unit and so greater demand from manufacturers of premium high-performance warm edge products such as ourselves.

To read more see:

www.thermosealgroup.com/news-media/news-archive/spacer-bars-document-l-energy-efficiency-and-triple-glazing
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Our trend in sales has seen a continual decline in Aluminium and increase in demand for our market-leading warm edge spacers

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