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Dan Marks

Dan Marks
Dan Marks was the former Technical Director at Stego Industries, LLC.
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Recent Posts

STEGO IQ | Is Thickness a Key Factor When Specifying A Vapor Barrier?

Vapor barrier thickness is a key attribute of a below-slab vapor barrier but it does not tell the whole story. Tune into this Stego IQ episode where Stego Technical Director Dan Marks provides some insight on all the key attributes that make up a high-performing under-slab vapor barrier which is puncture resistance, tensile strength, and most importantly permeance and longevity.

STEGO IQ | Concrete Curling and Warping: The Hard Facts

 

Stego IQ returns with the latest episode dispelling the myth about vapor barriers and slab curl. Dan Marks, Stego's Technical Director, returns to the screen to explain the short term slab curl effects with a vapor barrier as well as the long term effects of slab curl if you do not install a below slab vapor barrier.

STEGO IQ | Below-Slab Vapor Barriers: What Does a Perm Rating Mean?

 

10 Critical Reasons Why You Need a Below-Slab Vapor Barrier

 

Despite its cost being measured in mere cents per square foot, project designers, contractors, and building owners often disregard a high-performance under-slab vapor barrier. Yet, failing to use this vital material may be the best illustration in the construction industry of “a penny wise and a pound foolish” – unnecessarily risking costly consequences and potentially years of legal squabbling over liability.

Radon Gas Mitigation in New Construction – A Chance to Get it Right

We have all probably heard of or endured a personal connection to a familiar story: the victim of lung cancer who “never smoked a day in their life.”

What Makes a Vapor Barrier Different than a Vapor Retarder?

The Relationship Between Under-Slab Vapor Retarders and Vapor Barriers

What Is ASTM E1643? Summing Up Vapor Barrier Installation Standards

A Breakdown of the Four Sections Within ASTM E1643

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence.

What Is ASTM E1745: Understanding the Standard and Its Classifications

ASTM (American Society for Testing and Materials) E1745 is the Standard Specification for Plastic Water Vapor Retarders Used in Contact with Soil or Granular Fill under Concrete Slabs. This standard requires products undergo conditioning testing designed to simulate in-service (under-slab and installation) conditions, and it classifies vapor retarders based on their tensile strength, puncture resistance, and water vapor permeance ratings.

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