Wraptite® UV is a Class B fire-rated membrane that combines the best properties of vapour permeability and air tightness in one innovative, self-adhering product, specifically designed for use behind open-jointed cladding.

Wraptite UV has exceptional water resistance and UV resistance to provide a 'shadow' appearance within open rainscreen façades.

Manufactured from polyester and a functional coating, with a proprietary acrylic moisture vapour-permeable adhesive and silicone-coated PET release liner.

Key features

  • Airtight yet vapour-permeable

  • No primer required

  • Tough facer laminate resists punctures and tears during construction

  • Lightweight and easy to install

  • Manufactured rolled goods ensure consistent properties and performance

  • Wide service temperature range

Specifications

  • Nominal thickness: 0.38mm

  • Roll size: 1.5 x 50m

  • Material: 3-layer polypropylene micro-porous film laminate with UV-resistant coating; backed with a proprietary acrylic moisture vapour permeable adhesive and silicone-coated PET release liner

Technical properties

  • Base weight to be no less than 392g/m²

  • Water vapour permeability: to be no greater than Sd = 0.06m when tested to EN 12572 Method C

  • Resistance to penetration of air: to be no more than 0.01m³/m².h.50Pa when tested to EN 12114

  • Reaction to fire: Class B-s2,d0 when tested over 12mm calcium silicate board as per BS EN 13238:2010

  • UV resistance: to be no less than 12 months uncovered, with 5000hr ageing

  • Water penetration: to be no less than Class W1, aged and unaged, when tested to EN 1928 Method A

  • Tensile strength: to be no less than MD 490N; CD 330 N when tested to EN 12311-1

  • Tear resistance: to be no less than MD 327 N; CD 453 N when tested to EN 12310-1

  • Dimensional stability: to be no more than MD -0.032%; CD -0.15% when tested to EN 1107-2

  • Installation temperature: -10°C to +60°C

  • Service temperature: -40°C to +100°C

  • The joint openings in the façade covering to be less than 40% of the area, and maximum 50mm wide