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DELTA®-Reflex 4'-11" x 164'

DELTA®-REFLEX is completely impermeable to water vapor. This highly effective barrier stops any vapor diffusion and thus helps to prevent wetting and damage of thermal insulation and the building enclosure throughout the lifetime of the structure.

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Our Price: $470.16

Availability: Usually Ships in 2 to 3 Business Days
Product Code: DLRE00

With the DELTA® REFLEX vapor barrier, you can protect your roof and walls from harmful water vapor. Check out our sizes and prices below, and order your DELTA® REFLEX vapor barrier from our trusted supply team here at Spycor Building Products.

The high-performance, energy-saving vapor and air barrier of DELTA ®REFLEX by Dorken offers the ultimate protection and is highly efficient.


DELTA®-REFLEX is 100% impermeable to water vapor. This highly effective barrier stops any vapor diffusion thus helping to prevent water damage and damage to the thermal insulation of the building enclosure throughout the lifetime of the structure. DELTA®-REFLEX enhances the effectiveness of thermal insulation by up to 10%. Its 4-ply membrane achieves 50% heat reflectance (certified by Fraunhofer Institute, Germany). Its internal aluminum layer also shields off hazardous electromagnetic radiation and creates a 100 % air- and vapor-tight seal. With its extraordinary tensile strength and an excellent fire rating (B1 - DIN 4102) DELTA ®REFLEX by Dorken is unmatched in its performance. Get it shipped to you form Spycor Building Product's website today


The four layers of DELTA®-REFLEX are made out of a vapor-impermeable, highly reflective and corrosion-resistant aluminum layer that is then laminated between a transparent polyester film and a grid-reinforced polyethylene film, to ensure that no water or vapor gets into your walls, roofs, and trusses.


The unique structure and material composition of DELTA®-REFLEX with outstanding flexibility make this contractor-friendly product easy to handle. The extremely high tensile strength prevents tearing during installation. The flexible material allows for quick installations even in difficult places. Be sure to use fasteners for delta drain to ensure that the air-tight, vapor-tight seal stays in place.

Technical Specs:

Get your DELTA® REFLEX vapor barrier with safe and secure shipping from our trusted suppliers here at Spycor Building Products.

Product name


Fire properties

Highly fire resistant: B1
DIN 4102

Tensile strength

approx. 450 N/5 cm
in both directions
DIN 53 354

S d value

Over 150 m
Temperature range - 40 °C to + 80 °C
Mass per unit area
approx. 180g/m²

Roll weight

approx. 13.5kg /30lbs

Roll length

25m / 50m

Roll width

3m / 1.50m

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Bitumen based adhesive combined with tough textile carrier.

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