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Energy-saving 4-layer vapor barrier film with reflective coating for pitched and flat roofs with integrated self-adhesive edge for fast, airtight laying.
Extended warranty 15 years.

The combination of high strength and plasticity allows the DELTA®-REFLEX membrane to be installed on large areas without the risk of damage due to excessive tension. The membrane easily keeps the load from the insulation.
It can be used in wet areas (swimming pools, bathrooms, kitchens) of residential buildings and industrial buildings.

Suitable to use on pitched and flat roofs, as well as in the walls / ceilings of frame structures. DELTA®-REFLEX overlap is performed with DELTA®-MULTI BAND or DELTA®-INSIDE BAND tapes. Before sizing, it is necessary to wipe the overlap area to remove dust, this is a mandatory requirement in a dusty construction site.


  • 100 % Air- and Vapour-Tight
  • 50 % Heat Reflection
  • 10 % more Insulation
  • DELTA®-REFLEX shields off up to 99 % of hazardous electromagnetic radiation.
  • 4-layer composite. Rugged, strong, flexible and easy to install.

Technical data 

A watertight, corrosion-free embedded aluminium layer between a highly transparent polyester film and a mesh-reinforced polyethylene film.

Fire resistance

Class E, EN 13501-1,
B 1 rating (DIN 4102)

Tear strength

approx. 450/400 N/5 cm, EN 12311-2


approx. 150 m

Service temperature range range

- 40 °C to + 80 °C


approx. 180 g/m²

Roll weight

approx. 13,5 kg

Roll sizes

50 m x 1.50 m   (available in 25 m x 3 m)

Quality - made in Germany

Made by Dörken


Estimated delivery time 1-3 days