Daltex® RoofTX® Optima
Daltex® RoofTX® Optima is a 3-layer low resistance vapour permeable air barrier roofing underlay for pitched roof construction. Daltex® RoofTX® Ultra is also certified for use in walling.
Daltex® RoofTX® Optima is suitable for fully supported or unsupported applications and can be utilised in conventional ventilated roof constructions. Vapour permeable Daltex® RoofTX® Optima 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® Optima, with low vapour resistance, allows moisture to diffuse through the underlay. In warm pitched roofs and UK cold pitched roofs, and when Daltex® RoofTX® Optima is installed there is no need to ventilate the roof space, providing the fabric is installed in accordance with the relevant Agrément Certificate.
Air Barrier - Allows More Energy Efficient Design
- effective against wind driven rain, snow and dust
- excellent water vapour transmission properties
- excellent resistance to water penetration
- enhanced flammability resistance to EN 11925-2
- allows more energy efficient design
- durable, flexible & lightweight
| Roll Size | Roll Weight | Colour | Pallet Size |
|---|---|---|---|
| 1.0m x 50m | 4.6kg | E4 Grey | 1110 x 1110mm |
| 1.5m x 50m | 6.9kg | E4 Grey | 1110 x 1110mm |
| Mass (per unit area) (EN 1849-2) | 92g/m² |
| Tensile Strength (EN 12310-1) | Machine: 270 N/50mm Cross: 145 N/50mm |
| Tear Resistance (EN 12310-1) | Machine: 110 N Cross: 70 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 |
