Dörken Systems Inc.
4655 Delta Way, Beamsville, ON L0R 1B4, Canada

Phone: +1 (905) 563-3255
Tech Support:
+1 (888) 433-5824
Fax: +1 (905) 563-5582

DELTA® is a registered trademark of Ewald Dörken AG, Herdecke, Germany.

The water-resistive barrier that’s both air tight and vapor permeable 

DELTA®-VENT SA is proven to keep buildings dry and comfortable for the life of the building for better building performance, efficiency and customer satisfaction. It is ABAA evaluated, Building Code Evaluation ICC-ESR 2932 (AC38), meets most stringent air tightness requirements when tested per ASTM E2357 (air barrier assembly test), NFPA 285 compliant, Red List Compliant, DECLARE, and has a Health Product Declaration (HPD 2.0).

DELTA®-VENT SA leads the industry in vapor permeability with a rating of 50 perms. Water-resistive barriers with much lower permeability ratings can trap moisture within the envelope, leading to mold and damage – causing further issues with occupant comfort and health. While keeping external air and water out of the building, DELTA®-VENT SA allows moisture and vapor to escape, for more effective drying

DELTA®-VENT SA comes fully adhered for simple and straightforward application, no fasteners required. With the self-adhesive edge-lap feature, ensuring an airtight overlap is easier than ever, and takes the guesswork out of the application process. It’s lightweight, tear free, and works seamlessly with additional accessories in the system.

DELTA®-VENT SA is the only manufacturer that offers a complete line of application accessories that are chemically compatible, so every corner, window, gap and edge is 100% sealed, and your building has a continuous envelope. The team behind DELTA®-VENT SA also provides knowledgeable recommendations and Design Logic to solve air and water concerns.

Industry-leading Vapor Permeability

Complete System


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For design and specification assistance, installation instructions, or education on any DELTA® products

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Get the Most Vapor Permeable Self-Adhesive Membrane on the Market

The superior technology of DELTA®-VENT SA is proven to keep buildings dry and comfortable for the life of the building, contributing to better building performance, energy efficiency, customer satisfaction, and keeping your reputation intact.

Watch On Demand with Graham Finch

RDH Building Science Principal and Senior Building Science Specialist Graham Finch shares design and construction lessons learned from some of North America’s tightest building enclosures.

Lessons from North America's Tightest Building Enclosures

How to compare the pros and cons of different air barrier systems depending on project goals; 

Which considerations are most important when selecting air barrier materials; 

How to achieve measurable improvements in airtightness; and

How to apply lessons learned from past successful high-performance projects to accurately assess the feasibility of today’s Passive House targets.

Originally Aired: July 10, 2020

Sign up to get access now

Air barrier commissioning and testing requirements are now mandatory within many jurisdictions in North America. This significant requirement, along with an uptake in higher-performance Passive House and Net Zero projects, has truly raised awareness around the benefits of airtight buildings. Several air barrier systems are emerging as simple, cost-effective, and proven approaches for success and, through the design and testing of these buildings, are only getting better. Register now for this on-demand webinar, Lessons from North America’s Tightest Building Enclosures, and stream it anytime, anywhere.

What you will learn: