Wall Guardian FW-100A, a liquid-applied, fibered acrylic air barrier that likewise functions as water/ weather barrier and vapor retarder, exhibits an air leakage rate of 0.0004 cfm/ft.2 @ 1.57 psf--well below the ASTM E2357, Standard Test Method for Determining Air Leakage of Air Barrier Assemblies threshold.
Compared to house wraps and mechanically fastened weather barriers, product engineers note, Wall Guardian FW-100A can be quickly applied to building material surfaces with a heavy-duty sprayer, roller or brush.
Technical experts from Grace talked about the products and solutions they are offering which include water proofing of below grade deep basements, answers to architectural concrete in exposed areas - mainly in building facades - and weather barrier systems in high rise buildings.
Greg Austin, also from Grace, talked about the latest technology for use in an efficient design strategy and the best solution for a functional weather barrier system in facade design.
He drew attention to the fact that extreme weather conditions in the Middle East demands a carefully designed weather barrier system all around the building.
* The Dow Corning Silicone Air Barrier System -- A complete air and weather barrier solution that provides airtight moisture control for more energy-efficient building envelope designs.
* Dow Corning DefendAir 200 -- A 100 per cent silicone liquid-applied air and weather barrier that cures to form a seamless, flexible membrane, Dow Corning DefendAir 200 is vapour-permeable and exceeds industry requirements for airtight performance, is able to withstand unlimited UV exposure and has an NFPA Class A fire rating.
All is then wrapped in fire resistant gypsum board and a weather barrier
Compared to house wraps and mechanically-fastened weather barriers
, Wall Guardian FW-100A can be quickly applied to building material surfaces with a heavy-duty sprayer, roller or brush.
A recent article in the Journal of Light Construction confirms that even the best weather barriers
cannot compensate for the lack of flashing and shoddy construction practices.