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Tyvek® e-Guard W1

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Reflective breather membrane for improved thermal comfort throughout the year

New Tyvek® e-Guard W1 reflective breather membrane Reflecting radiant heat in summer and reducing convective heat loss in winter.

The airtight and water resistant yet vapour-open reflective breather membrane provides a secondary protection from external moisture.

Durable, but flexible and easy to install  Tyvek® e-Guard W1 is particularly effective in lightweight wall construction such as timber frame systems.

Its outstanding properties:

DURABILITY:

Excellent long-term performance (based on tried and proven technology from DuPont™ Tyvek®)

4 months UV resistance prior to covering

Robust: unique 175 microns functional layer

PROTECTION FROM WATER:

Water resistance (W1); 1700 mm water column helps protect against water damage, wood rot…

ENHANCED AIRTIGHTNESS

Wind tight but vapour open

Vapour resistance 0,25 MNs/g

COMFORT AND ENERGY SAVING

Reflects 97% of heat radiation (emissivity 3%) for improved thermal comfort throughout the year

THERMAL RESISTANCE

Thermal resistance value for all vertical cavities larger than 20 mm: 0,75 m2K/W (NPL guarded hotbox method)

FACTORY OR SITE INSTALLED

Lightweight, flexible and easy to install

CASE STUDIES