Verified by manufacturer 29 days ago
Danelaw® LR150
A low resistance vapour permeable roof tile and slate underlay for use in cold and warm roofs.
Danelaw® LR150TT is a universal middleweight low resistance vapour permeable roofing underlay intended for use on pitched roofs as a secondary barrier installed beneath tiles and slates. The Danelaw® LR150TT has an integral tape to tape system for effectively sealing the horizontal overlaps in moist and dusty conditions. Also available without the integral tape (Danelaw® LR150).
LR150TT:
LR150:
Features and benefits:
Color | Grey |
Finish | Other Manufacturer guidanceEmbossed |
Material | Composite |
Shape | Rectangle |
Length | 50000 mm |
Width | 1000 mm 1500 mm |
Uniclass | |
CAWS | H60/3 Roof tiling H67/24 Vapour-permeable underlay H65/22 Vapour permeable underlay H61/22 Vapour-permeable underlay H60/22 Vapour-permeable underlay H60/235 Vapour-permeable underlay H67/290 Vapour-permeable underlay H65/235 Vapour-permeable underlay H62/3 Roof slating H62/235 Vapour-permeable underlay H61/235 Vapour-permeable underlay |
Standard | To BS EN 13859-1. |
Third-party certification | British Board of Agrément (BBA) certificate.Guidance for specification option: Certificate number 17/5426. |
Performance criteria | |
Water vapour properties | 0.02 (+0.020/-0.005) sd(m).Manufacturer guidanceWater vapour resistance. |
Fire performance | Class E. |
Tensile properties | Longitudinal/ transverse (before ageing): 350 (±40)/ 210 (±40) N/50 mm. |
Class (minimum) | W1. |
Material | Two layer non-woven spun-bonded polypropylene, with a calcium microporous film. |
Form | Spun-bonded. |
Weight (minimum) | 150 gsm. |
Reflective face | None. |
Width | 1000 mm. 1500 mm. |
Air permeability | 0.04 m³/m² x h x 50 Pa. |
Elongation | Longitudinal/ transverse (before ageing): 60 (±15)/ 75 (±15)%. |
Contains Red List materials | No |
Material | Composite |
Recyclability | Recyclable after service life |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 0 % |