Daltex RoofTX® Ultra

Daltex® RoofTX® Ultra is a 3-layer low resistance vapour permeable air barrier roofing underlay for pitched roof construction.

Daltex® RoofTX® Ultra is suitable for fully supported or unsupported applications and can be utilised in conventional ventilated roof constructions. Vapour permeable Daltex® RoofTX® Ultra® has the added advantage of being suitable for use in unventilated roofing applications, and is accredited via BBA Certificate 06/4334 and IAB Certificate 06/0237.

Daltex® RoofTX® Ultra has a water vapour resistance of 0.18 MNs/g and therefore falls within the classification of a low resistance underlay. In warm pitched roofs and UK cold pitched roofs, and when Daltex® RoofTX® Ultra is installed there is no need to ventilate the roof space, providing the fabric is installed in accordance with the relevant Agrément Certificate, as the vapour permeability allows moisture to diffuse through the underlay. It is fully certified for use in both vented and non-vented applications.

Air Barrier - Allows More Energy Efficient Design

  • effective wind and rain resistance
  • excellent water vapour transmission properties
  • excellent resistance to water penetration
  • enhanced flammability resistance to EN 11925-2 Class E
  • allows more energy efficient design
  • durable, flexible & lightweight

Technical Data
Mass (per unit area)
(EN 1849-2)		112g/m2
Tensile Stength
(EN 12310-1)		Machine 280 N/50mm
Cross 155 N/50mm
Tear Resistance
(EN 12310-1)		Machine 130 N
Cross 120 N
Water Vapour Transmission
(EN 12572)		1100 g/m2/24 hrs
Resistance to Water Penetration
(EN 1928)		W1
Flame Retardancy
(EN 13501-1)		Class D*
*When tested to EN 11925-2