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2 Likes · 1 Answer
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An auto break retarder is a device used to augment or replace some of the functions of primary friction-based braking systems. ... more
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The facer on SAFETOUCH™ Insulation has a thermally activated adhesive that can be reactivated by using a hot-air gun or iron. Excessive heat will melt the facer, so use caution. If the facer is partially sticking to the fiber, the insulation may be ... more
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The clear plastic facer on SAFETOUCH™ Insulation acts as a vapor retarder, which helps control the amount of moisture passing through the insulation and collecting inside exterior walls, ceilings and floors. Check your local building codes to ... more
1 Like · 1 Answer
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Concrete admixtures such as accelerators and retarders can both speed up and slow down the process of hydration (drying) in the concrete. Concrete accelerators, namely Calcium Chloride, achieves this by building heat when it is added to the mix, and ... more
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Closed cell spray foams are used widely as a roofing system. A roofing system by design is meant to keep water out and the interior dry. Closed cell foam applied to the underside of roof decks keep the roof deck from moving due to temperature ... more
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To be considered a vapor barrier, testing results from ASTM F 1249 or ASTM E 96 must state a permeance of less than 0.01 perms (grains/[hour * ft2 * in. Hg]) A vapor retarder is classified by ASTM E 1745... ... more
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Mark writes from Baytown, Texas: "How essential is the 'kraft paper' vapor barrier in an attic space? I want to add insulation to the attic of my single story home to save more energy. I currently have blown in insulation just over the top of my ... more
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Charles writes from Melrose, Massachusetts: "I have a 1926 colonial with attic but no wall insulation. I would like to blow insulation into the wall cavity, but have no practical way of adding a moisture barrier. The interior includes wood ... more
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Beth-Anne writes from Whitewater, Wisconsin: "How are vapor retarder seams to be treated - just overlapped or sealed? Please provide details. I'm interested in a garage ceiling system which will have 1/2" drywall on the underside, then R30 blown in ... more
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Lori writes from Houston, Texas: "I have an all brick exterior house in Houston, TX built in 1950's. Brick appears to be up against exterior black sheathing. The house is being completely remodeled with R-15 unfaced insulation in exterior walls and ... more
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