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RESIDENTIAL ENERGY SAVING ATTIC ACCESS INSULATION PRODUCTS
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Energy Shield Radiant Hot Water Blanket |
Typical Fiberglass Hot Water Heater Blanket |
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Energy Shield Radiant Hot Water Heater Blanket has a larger piece of material to fit water heaters up to 26 inches in diameter and 60 inches in height. Kit includes a top panel for electric heaters to enhance energy savings. Installer may attach one side of the foil tape to the tank blanket vertically after cutting to size. During installation, the blanket is wrapped around the heater and joined together where the other side of adhesive liner can be removed to join the blanket ends together. The kit includes 96 inches of scrim-reinforced (has fiberglass strands embedded in tape for strength) tape with acrylic adhesive that includes a split back liner to aid in ease of installation. Acrylic adhesive strengthens with age and resists degradation in temperature extremes.
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Insulation blanket fits tanks 23.75 inches in diameter or less. Kit does not include a top panel for an electric tank. Tape for kit includes 100 inches of foil tape with rubber based adhesive. Foil tapes with rubber-based adhesive have quick adhesion properties but can lose its adhesive abilities with age and do not adhere well in higher than ambient temperatures indoors. Separation between the foil tape and water heater blanket can occur within several months especially in humid regions.
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Radiant Barrier reflective value for radiant heat is superior because it is 99.4%pure aluminum with a polyethylene backing on both sides.
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Typical blanket has foil paint coated kraft paper wrapped around Fiberglass.
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Insulation blanket has an effective R-Value of 13 for the top panel and an R value of 9.6 for the thermal blanket wrap for the hot water heater.
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Blanket has a conductive R-Value 3.2 when installed where insulation is is not smashed against tank. During a typical installation, the R-Value is unknown because the insulation is smashed against the tank and the reflective coating has a paper backing which tends to absorb moisture and heat which degrades its performance.
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Foil-foam-foil construction provides consistent performance. This material is waterproof and non-absorbent creating a vapor Barrier unaffected by moisture. If if it gets wet, it will continue to provide insulation value. It does not need to be replaced like fiberglass insulation.
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Performance is dependent upon insulation being sealed and protected from moisture and convective air currents. If fiberglass is wet, R-Value is negligible and the insulation must be replaced to restore its original R-Value.
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Does not mildew or promote fungus growth.
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Promotes mildew and mold in humid or wet conditions.
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Safe, no fibers to breath or cause skin irritation Installers do not need to wear eye protection, loose fitting clothing, and gloves to handle and install.
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The manufacturer for fiberglass insulation recommends respiratory protection during installation to prevent inhalation of glass fibers. Package contents state workers are cautioned to wear loose fitting clothing, gloves, and eye protection during installation to prevent skin contact.
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1http://www.eere.energy.gov/consumer/your_home/water_heating/index.cfm/mytopic=12760
2http://www.eere.energy.gov/consumer/your_home/water_heating/index.cfm/mytopic=13070
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