New from Dorken, DELTA®-ROOF is a tough roofing underlay that adds extra protection and value to your roof. This 4-layer material - designed to be installed on roof sheathing - is totally waterproof, wind resistant, super-tough and easy-to-install. Made from state-of-the-art spun-fiber materials, this roofing underlay is both lightweight and resistant to damage. With quality users around the world have come to expect from Dorken, DELTA®-ROOF is the ultimate protective roofing underlay for ventilated pitched roofs with sheathing boards. Order yours at a great rate from our trusted suppliers here at Spycor Building Products.
DELTA®-ROOF is engineered with spun-fiber material for excellent physical properties, combined with an inner waterproof layer, and reinforcement grid.
DELTA®-ROOF combines excellent material properties to provide superior protection to the roof against rainwater, snow, wind and dust. The membrane is lightweight and easy to install, and at the same time far more resilient than conventional asphalt saturated base sheet.
DELTA®-ROOF has been designed for ventilated pitched roofs with sheathing boards. Its relatively water vapor permeability helps to prevent buckling of asphalt shingles caused by solar driven moisture that would usually cause the sheeting boards to swell and expand.
Designed for ventilated pitched roofs with sheathing boards , DELTA®-ROOF can be laid directly under all conventional roof claddings.
The surface texture provides high abrasion resistance, prevents slipping and makes DELTA®-ROOF very user-friendly - great for safe installation. In comparison to bitumen and asphalt saturated sheathing membranes DELTA®-ROOF is pleasantly lightweight. The material is available in rolls 1.5m wide and 50m long, ensuring fast and easy installation.
Protect your roof the right way with Dorken DELTA®-ROOF roofing underlay - order now here at Spycor Building Products.
Evaluation Reports and Building Code Approvals
Water Vapor Transmission
ASTM E96-00 Proc. B
|0.415 g / sqm / 24 h |
Permeance - ASTM E96-00 Proc. B
|3.42 ng / Pa / s / sqm|
Perms - ASTM E96-00 Proc. B
|0.06 grains /h /sqft /in Hg|
|Breaking Load - ASTM D5035-95 (2003)|
MD: 146.9 lb / 2in.
(653.5 N / 50mm)
CD: 137.6 lb/ 2in.
(611.8 N / 50mm)
|Elongation at Break - ASTM D5035-95 (2003)|
|Tear Resistance - ASTM D1922-03a|
MD: 2624 g
CD: 2975 g
|Tearing Strength - ASTM D4533-2004|
MD: 41.6 lb (185.2 N)
CD: 36.1 lb (160.6 N)
Water Resistance: Impact Penetration
|no water passing|
Water Resistance: Hydrostatic
CAN/CGSB-4.2 No 26.3-95/ISO
|Fastener Pull-Through Force - ASTM D3462-03||284 N|
|Flame Spread - ASTM E84-09|
NFPA Class A; UBC Class I
|Smoke developed - ASTM E84-09|
NFPA Class A; UBC Class I
|Roll weight||apprx. 35 lbs (16 kg)|
|Roll width||4.92 ft (1.5 m)|
|Roll length||164 ft (50 m)|
-40 °F to +176 °F
(-40 °C to +80 °C)