Roofing membrane DELTA^®-ALPINA

Tear resistant roofing membrane for slightly inclined flat roofs. Can be welded with hot air or solvent welding agent.

In combination with the DELTA^® system components the roofing membrane enables the creation of a rain-proof and watertight sub-roof in accordance with ZVDH regulations.

01 /05

DELTA®-ALPINA in der Anwendung auf einem flach geneigtem Dach

Advantages

25-year guarantee of function
DELTA^®-ALPINA remains completely reliable after years of use. The exclusive DÖRKEN quality and long-term performance are confirmed in writing: with our 25-year guarantee of function.
Enables the creation of a rain-proof and watertight sub-roof
In combination with the DELTA^® system components (DELTA^®-ALPINA BAND, DELTA^®-ALPINA QSM, DELTA^®-FLEXX-BAND) DELTA^®-ALPINA enables the creation of a rain-proof and watertight sub-roof in accordance with ZVDH regulations. An “individual contractual agreement” is to be concluded between contractor and customer for the creation of a rain-proof or watertight sub-roof.
Maximum laying safety
The surface of the roofing membrane is extremely slip and tear-proof, offering maximum safety during application.
Minimal offcuts
The symmetrical structure means that DELTA^®-ALPINA can be applied irrespective of side. This results in minimal offcuts. This saves material and costs.
Processing also possible at low temperatures
DELTA^®-ALPINA guarantees assured processing - even at low temperatures. This helps avoid weather-related downtime.
Strict standards fulfilled
DELTA^®-ALPINA meets the strict standards of the alpine nations Switzerland and Austria.
Austria: Underlayment (DU Type II) according to ÖNORM B 3661:2017 and according to ÖNORM B 4119 for sub-roofs with enhanced rain resistance
Switzerland: Underlayment for enhanced and extreme stresses according to SIA 232/1:2011
Equipped with DELTA^®-AMS and DELTA^®-BiCo technologies.

Application

DELTA^®-ALPINA can be laid quickly and safely. Trapezoid counter battens are not required.
The product is laid onto a casing or comparable pressure resistant surface. The roll must be aligned without creasing. The roll is secured in the area of the upper and side overlaps using concealed staples or clout nails.
Welding can be undertaken homogeneously with both DELTA^®-ALPINA QSM (welding seam width min. 4 cm) and hot air (welding seam width min. 2 cm. ÖNORM B 4119 min. 4 cm).

Technical data

Material	Highly tear-resistant PES non-woven fabric with breathable PU coating top and bottom.
Suitability	In the case of fully insulated and ventilated roofs, on casing or a comparable pressure resistant surface.
	Germany: Underlayment according to ZVDH Class UDB-A
	Austria: Underlayment (DU Type II) according to ÖNORM B 3661:2017 and according to ÖNORM B 4119 for sub-roofs with enhanced rain resistance
	Switzerland: Underlayment for enhanced and extreme stresses according to SIA 232/1:2011
Reaction to fire	Class E, EN 13501-1
Fire index	4.2, VKF
Tensile strength	approx. 450/410 N/5 cm, EN 12311-1+2
Shearing resistance of joints	approx. 400 N, EN 12317-2
Watertightness	Watertight W 1, EN 13859-1+2
Sd-value	approx. 0.30 m, EN ISO 12572
Servicetemperature range	from -40 °C to +80 °C
Short-term maximum temperature load of the material	+120 °C
Weight	approx. 350 g/m²
Roll weight	approx. 16 kg
Roll size	30 m x 1,50 m

Accessories

DELTA^®-ALPINA QSM

Patented solvent welding agent for homogeneous welding of DELTA^®-ALPINA coverings.

DELTA^®-ALPINA BAND

Strips for the covering and sealing of counter battens or details when laying DELTA^®-ALPINA as a watertight sub-roof (as per ZVDH Class 1).

DELTA^®-FLEXX MANSCHETTE

Highly elastic pipe collar, universal for standard pipe diameters 100 - 125 - 150 mm.

DELTA^®-FLEXX CORNER

Flexible corner sealing for all outer corners of chimneys and rising structures. For welding with hot air to DELTA^®- ALPINA.

DELTA^®-SCHAUM-BAND

One-sided adhesive nail sealing tape from the roll for the secure sealing of nail spots.

DELTA^®-PINSELFLASCHE

Bottle for expert application of DELTA^®-ALPINA QSM.

DELTA^®-FLEXX BAND F100

Connection and sealing tape with high adhesive strength and high flexibility at the same time - for details both outside and inside.

Abdichten einer Kabeldurchführung mit DELTA®-FLEXX BAND FG 80 / FG 150

DELTA^®-FLEXX-BAND FG 80/150

Adhesive tape for sealing the most difficult, three-dimensional details inside and outside, such as for example corners, edges, and openings.

DELTA^®-DICHT BAND

Single-sided adhesive nail sealing tape made of bitumen/rubber compound with PE cover film.

Download

PDF | 533 kB

Brochure DELTA^®-ALPINA

PDF | 111 kB

Declaration of Performance DELTA^®-ALPINA

Contact

Would you like information on detailed product properties, use cases or other technical topics?
Then feel free to contact our application department on +49 2330 63 578 or atabvf@doerken.de.

Do you have questions about prices, availability or the status of your order?
Our sales service will help you with these matters on +49 2330 63 636 or membranes@doerken.de.

Contact form

You can also use our contact form to send us your request.

International contact

Here you will find all the contact details of our international DÖRKEN Membranes subsidiaries and importers.

Roofing membrane DELTA®-ALPINA

Advantages

Application

Technical data

Accessories

DELTA®-ALPINA QSM

DELTA®-ALPINA BAND

DELTA®-FLEXX MANSCHETTE

DELTA®-FLEXX CORNER

DELTA®-SCHAUM-BAND

DELTA®-PINSELFLASCHE

DELTA®-FLEXX BAND F100

DELTA®-FLEXX-BAND FG 80/150

DELTA®-DICHT BAND