About Black Twig

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So far Black Twig has created 8 blog entries.

Bank – South St. Louis County

The bank elected to have a chemical vapor barrier installed because many former car service centers used fluids and chemicals that may have emitted toxic gasses into the subsurface soil vapor.

2017-08-08T16:54:33+00:00 August 7th, 2017|

If I Knew Then…. Interview with Jackie Robb

  The Mistake: Jackie Robb, Prinicpal Feeling as though I needed to know all the answers. I've been in consulting here at Wellington for 25 years and before that for seven years. When I got out of engineering school, I thought, “My clients are going to expect me to know everything about everything." [...]

2017-08-07T10:54:32+00:00 August 3rd, 2017|

The Growing Concern with Vapor Intrusion

The Growing Concern with Vapor Intrusion In extreme cases, vapors may accumulate in dwellings or occupied buildings to levels that may pose near-term safety hazards (e.g. explosion) or acute health effects. This occurs when there is a migration of chemical-containing vapor from a subsurface source into an overlying building. At [...]

2017-06-27T11:28:58+00:00 March 14th, 2017|

Not All Vapor Barriers are Created Equal

Not All Vapor Barriers are Created Equal Vapor barriers…are they all the same? What is the difference between a vapor barrier and a moisture barrier? Isn’t a water vapor barrier the same as soil and gas vapor barrier? Chemical vapor venting channel designed to divert dangerous vapor away from a building. [...]

2017-06-27T11:27:20+00:00 March 14th, 2017|

Constructing the Vapor Barrier

CONSTRUCTING THE VAPOR BARRIER The general contractor needed to complete the concrete pour phase of the construction in a timely manner to stay on schedule. In order to meet these specific requirements, the vapor barrier construction would need to be finished in a single day and the installation needed to wait until [...]

2016-12-14T11:03:44+00:00 December 14th, 2016|

These Vapors Aren’t Water

THESE VAPORS AREN'T WATER Mention “vapor barrier” and many people are like to think of “moisture barrier,” something to keep water vapor out of wall cavities and prevent the growth of mold. That’s not what Wes Robb has in mind. For Robb, director of technical strategies and applications at Vapor Mitigation Strategies, a vapor [...]

2016-12-14T10:52:38+00:00 August 29th, 2016|

Vapor Mitigation Strategies Opens its Doors

VAPOR MITIGATION STRATEGIES OPENS ITS DOORS Wellington Environmental Company focused on eliminating Vapor Intrusion St. Louis, Mo. (June 2016)— Vapor Mitigation Strategies, a Wellington Environmental company, launches, offering cost-effective barrier solutions for the growing issue of Vapor Intrusion (VI) facing the construction industry. Wholly-owned by St. Louis based Wellington Environmental, Vapor Mitigation Strategies offers [...]

2016-10-18T13:19:16+00:00 August 29th, 2016|

Retail–Sunset Hills, Missouri

The GC needed to complete the concrete pour phase of the construction in a timely manner to stay on schedule. In order to meet these specific requirements, the vapor barrier construction would need to be finished in a single day.

2017-08-08T16:30:10+00:00 May 27th, 2016|