TLX Gold multi-foil roofing membrane insulation

TLX Gold insulation is a breathable multi-foil and roofing membrane delivering a less intrusive, energy improvement to existing housing stock and renovation projects.

With un-insulated roofs accounting for around a quarter of heat lost from a home a two-in-one product which insulates and is as easy to install as a standard roofing tile underlay is finding favour with builders and roofers alike.

Installed in the same way as a standard roofing tile underlay, TLX Gold has been specified for several retro-fit social housing projects, property conversions, historic building renovations and public sector projects.

It can help deliver thermal performance where the challenges of access and available headroom have previously been issues.

The product acts as a high thermal barrier and consists of a seven layer composite including a top layer of high performance breather membrane, combined with PET wadding, interleaved with reflective films.

A bottom layer of reflective film reflects infra-red rays back into the living space.

A City council in the North of England specified TLX Gold for a project involving re-roofing a terraced row with existing rooms in the roof.

Here TLX Gold was simply installed across the rafters in one application, instead of cutting rigid insulation to fit between the rafters and then installing a breather membrane across the top.

Hyde Housing Association's Retrofit and Replicate scheme adopted an alternative application.

The experimental project saw the product installed to the underside of existing rafters, as a secondary underlay underpinning existing damaged roofing felt and keeping the space clean and useable.

The product is ideal for where a roofing membrane is being replaced (there is no need to raise the roofing line with TLX Gold) and helps in instances where Building Control is currently struggling to apply paragraph 54 (renovation of thermal elements) of Building Regulations 2000 Part L1B.

Paragraph 54 requires that when more than 25 percent of a roof is to be renovated then its thermal performance must also be upgraded to the standard outlined.

However under Paragraph 55 if such an upgrade is technically or functionally impossible or won't achieve a simple payback of 15 years or less then the upgrade should be to the best standard that would achieve these criteria.

TLX Gold provides the necessary upgrade to comply and it delivers thermal performance, especially where there are challenges of access, available headroom or a need to hold onto valuable storage space within the loft.

It does not require access to the loft space to be installed and any existing plasterwork is not disturbed while carrying out the work.

The tiles are simply removed and the product installed in place of a standard roof membrane prior to re-roofing.

Due to its unique breathability, TLX Gold does not need a ventilated air gap or a vapour barrier on the warm side of a roof.

Nick Searle, managing director of Web Dynamics said: "TLX Gold is a first and still the only combination multi-foil and roofing membrane and another example of how popular and versatile multi-foils are".

"Since we launched the product last year it has been used in several landmark and high profile installations and its specification is on the increase".

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