What makes Tyvek® so special ?
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Thickness and quality of the functional layer |
| DuPont™ Tyvek® offers a functional layer which is ca. 6 to 8 times thicker than most common multi-layer products. Most common multi-layer underlays are composed of a very thin functional layer (ca. 3 times thinner than a human hair) laminated between external protective layers. |
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Unique structure |
| Tyvek® is composed of millions of microfi bres that create a “maze” which guarantees a proper and homogeneous spread of UV and heat additives to offer superior durability throughout the product thickness. |
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Proven resistance to UV and to heat |
Most multi-layer underlays are made of PP (polypropylene) which is naturally more sensitive to UV than PE (polyethylene). The Tyvek® functional layer is made of 100% high UV and heat stabilized PE. At times, temperatures on top of insulation may exceed 80°C. Temperature highly degrades the functionality of an underlay. Tyvek® membranes resist temperatures of up to 100°C. |
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Made by DuPont |
| The success of Tyvek® results from a unique manufacturing process using flash-spunbond technology – and over 20 years of experience in the underlay market from a company renowned for pioneering innovation and a commitment to quality and ethical practice. |
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Tyvek® proven durability
Fewer layers or more ?
Ageing tests results
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