New Tyvek® e-Guard W1: low emissivity, reflective breather membrane with a water-tight difference

Is one membrane much like another? Not if it has been designed to tick every vital performance box, is BBA certified for doing so, and comes from the renowned experts in advanced and dependable building membranes. Is it worth cutting corners or cost when aiming to protect a crucial asset, be that a new property development or a professional reputation? Not if genuine quality and long-term peace of mind matters.

New Tyvek® e-Guard W1 is a low emissivity, reflective, breather membrane with a difference. Not only does it offer all the reliable properties of a product that takes durability seriously, it also offers a very high thermal resistance value to help improve both occupier comfort and energy-saving returns on investment. As with all Tyvek® membranes benefiting from the brand’s unique technology, new Tyvek® e-Guard W1 also guarantees superior water hold out (at least W1 – as recommend by TRADA), exceptional UV resistance (especially if left uncovered for longer than expected periods) and enhanced airtightness.

In terms of reflective capacity, Tyvek® e-Guard W1 is certified as having a Thermal resistance value for all cavi­ties larger than 20mm of 0.75 m2K/W (using the NPL guarded hotbox method) and reflects 95% of heat radiation, providing thermal comfort throughout the year.

This unbeatable combination of proven performance and longevity makes Tyvek® e-Guard W1 the smart choice not only for Timber Frame projects, but for most modern methods of construction. This becomes especially valuable in a world of changing regulations, claims and demands. Whether used alone or part of a holistic system with other world-class DuPont building envelope products, Tyvek® e-Guard W1 comes with all the assurance, technical back-up and ease of use to be expected of the name.

About DuPont™ Tyvek® & DuPont Building Membranes and Products

DuPont™ Tyvek® advanced building membranes are unique in the market due to their high-quality single layer construction. Tyvek®, in all its specialised versions, is naturally vapour open but also durably wind and water-tight. Lightweight yet robust, it is easy to install and offers long-term, proven reliability. Designed to protect the building envelope against the effects of weather and moisture, this family of membranes also offers optimal air-tightness and can help to improve the thermal performance, energy-efficiency and interior climatic stability of a building.

Tyvek® is also designed to work as part of a holistic and optimal system with a range of other proven DuPont™ Tyvek® products for the building envelope, including the DuPont™ AirGuard® advanced AVCL series, the highly versatile Tyvek® FlexWrap NF and EZ sealing tapes, plus other specialised membranes, tapes and sealants. All DuPont building products come with the renowned service, expertise and technical back-up of a world-class science company. 

For more information about the Tyvek® range of advanced products please visit: or call 08444 068 722 (087 922 2740 in ROI)