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

Self-Adhesive

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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 Expert Dr. John Straube

Our new learning series, Building Science Deconstructed, is a great opportunity to learn anywhere you are. Foundations, Keeping Your Bottom Dry with Dr. John Straube digs into water management practices for foundations and below-grade structures. Learn how to reduce your risk and keep your bottom dry.

In this On Demand Webinar, Foundations, Keeping Your Bottoms Dry with 
Dr. John Straube, you will learn: 

Basic water management system types and their characteristics in terms of water, air, and thermal control

Strategies for appropriate material selection, installation methods, and other common design- and construction-related decisions


How to explain why foundation type and method of placement matter


How to evaluate project constraints and choose the right system for the job

Originally Aired: May 1, 2020