25 June 2004
25 June 2004
Johns Manville (JM) is introducing Spider spray-in which is a formaldehyde-free, fast-dry insulation system.
Spider is made from specially designed glass fibres that are naturally white like cotton. During the installation process, the fibres are mixed with a revolutionary, non-hazardous adhesive that eliminates the need for netting and dramatically speeds up drying schedules. Spider installs faster than other spray-in systems, and tests show its adhesive binder dries in only two to eight hours, which speeds up sequencing and enables builders to schedule the next sub-contractor sooner. On average, JM claim that installed Spider dries more than six times faster than cellulose.
""Johns Manville is committed to meeting our customers' needs through innovation and product offerings that help them grow their businesses,"" said Mike Lawrence, vice president of sales and marketing for JM. ""We are excited to introduce Spider to the market because it creates value for everyone involved in the home, from contractor to builder to homeowner.""
Spider was designed with energy conservation in mind. When professionally installed, Spider is said to reduce defects such as gaps, inadequate cavity-fill and settling, resulting in maximum thermal performance and reduced air movement. Because Spider completely fills wall cavities, energy efficiency is improved enabling the insulation to deliver the industry's highest R-values. Whereas cellulose can achieve only an R-value of 13, Spider reaches R-values of 15 in 2x4 wall cavities and 23 in 2x6 wall cavities, according to JM.
JM assert that Spider reduces the opportunity for mould and mildew growth, a concern that has plagued the home building industry in recent years. According to the Insurance Information Institute, mould-related lawsuits have increased 300 percent since 1999. Spider dries more than six times faster than cellulose, mitigating the risk of mould and mildew growth, and allowing more rapid sequencing for builders to complete projects expeditiously.
Spider's fibre glass is made primarily from sand, a plentiful and rapidly renewing resource, and is naturally fire resistant. In contrast, cellulose must be treated with chemicals in order to reduce fire risk. Instead of water and chemicals, Spider formaldehyde-free fibre glass spray insulation is combined with a non-hazardous, non-flammable adhesive, allowing the insulation to adhere quickly and effectively to a wall cavity.
""Though made mostly of recycled paper and sometimes considered an environmental, 'green' building product, wet cellulose, unless chemically treated, is a food source for mould and mildew growth,"" said Tim Carey, product stewardship manager for JM. ""Wet spray cellulose requires a relatively long drying time, and drywall erected too early can significantly increase the chance that trapped moisture will facilitate mould and mildew growth inside the wall.""
Spider has been tested to show compliance with Federal Trade Commission (FTC) rules and local, state and national building codes, also passing the ASTM tests for Thermal Performance, Fire Resistance, Corrosion Resistance, Fungi Resistance and Water Vapor Sorption.
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