![]() This results in reduced energy costs and increased productivity. A facing with high reflectivity reduces the need for high lighting levels in work areas. When selecting a facing, special consideration should be given to its reflective quality. Be sure to quickly patch any holes in the vapor barrier. These unpleasant odors make vapor barrier removal a must After cleaning up and removing damaged insulation we make sure to deodorize and sanitize to help. Facings that have been torn or punctured are no longer capable of blocking water vapor and may eventually do more harm than good. Please refer to installation instructions to ensure correct procedures are used. Proper installation and selection is imperative for maximum effectiveness. Anything with a rating above 1.0 is not considered a vapor barrier. The lower the perm rating in a vapor barrier material, the more effective the barrier becomes.Ī facing material with a perm rating of 0.1 or less is considered excellent. The perm rating, or permeance, is a measure of the amount of water that passes through one square foot of material per hour. WARNING! With standard vinyl, cold temperatures can cause cold crack, a situation where the facing becomes brittle and if handled can crack. This helps in preventing vapor from reaching the cooler air and condensing. In cold climates, the house’s interior is far warmer than the home’s exterior. Some ceiling insulation types are manufactured with an existing vapor barrier, negating the need to install any additional vapor barrier. The effectiveness of a vapor barrier depends on three primary factors:įacings intended to serve as vapor barriers should be installed on the inner, heated surface of the insulation, where vapor pressure is the highest. Generally speaking, a vapor barrier is a highly beneficial and necessary addition to ceiling insulation in most cases. This prevents moisture from accumulating within the insulation blanket and the structure which translates into consistent thermal values and lower heating and cooling costs. While a vapor barrier may not necessarily be able to stop the flow of water vapor, it does an excellent job of minimizing the rate and volume of the flow. Thicker insulation with higher thermal resistivity is a necessity in passive and net zero home design. The main function of facings is to act as a vapor barrier. As building codes around the country tighten in the push for greater energy efficiency, specifying insulation and vapor barriers for homes and buildings requires a greater level of conscientiousness than in years past. In most cases, a reinforcement of fiberglass or polyester scrim is used for extra rigidity and greater impact resistance. Facings provide vapor barriers, light reflectivity and structural strength. In addition to acting as a decorative protection barrier, facings serve an integral part of the overall insulation system.
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