Johns Manville Introduces Spider(TM) Spray-In, Fast-Dry, Insulation System

Latest Formaldehyde-Free Innovation Dries Noticeably Faster Than Wet-Applied Cellulose, Mitigates Risk of Mold and Mildew Growth

Monday, June 21, 2004 5:00 am MDT


"I was impressed at the speed of installation and at the condition of the property once the insulation was installed"

DENVER--(BUSINESS WIRE)--The North American insulation market is currently seeing a shift in construction practices, driving growth for spray-in systems. Builders and contractors are increasingly seeking insulation products that provide minimal insulation gaps and voids for maximum energy efficiency, helping them meet newer codes recommended by the Department of Energy. In addition, they are demanding systems that allow quicker and easier installation, fewer callbacks and reduced risk of mold, mildew and fire. In order to meet market needs, Johns Manville (JM), a leading insulation manufacturer, is introducing Spider(TM) spray-in formaldehyde-free, fast-dry insulation system.

Spider is made from specially designed glass fibers that are naturally white like cotton. During the installation process, the fibers 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, installed Spider dries more than six times faster than cellulose. Spider allows insulation contractors to finish a typical home in two to three hours -- twice the speed of 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 reduces 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 significantly 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.

To ensure Spider is installed correctly, contractors and installers must complete a comprehensive certification program developed by JM. The certification program trains installers to reduce defects and optimize the product's capabilities. Once they've passed the comprehensive test, installers are Spider-certified and their expertise is validated.

One of JM's certified Spider installers is Kinzler Construction of Ames, Iowa. Kinzler installed Spider last spring in a 4,500-square-foot custom home built by Stolte Construction.

"I was impressed at the speed of installation and at the condition of the property once the insulation was installed," said Shawn Stolte, president of Stolte Construction. "There was very little residue on the framing, making clean up very quick."

Spider also reduces the opportunity for mold and mildew growth, a concern that has plagued the home building industry in recent years. According to the Insurance Information Institute, mold-related lawsuits have increased 300 percent since 1999. Spider dries more than six times faster than cellulose, mitigating the risk of mold and mildew growth, and allowing more rapid sequencing for builders to complete projects expeditiously.

Furthermore, Spider's fiber 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 fiber 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 mold 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 mold and mildew growth inside the wall."

"I will definitely use Spider again," added Stolte. "Because Spider increases energy efficiency and is formaldehyde-free, my homes are more appealing. I can, and do, sell that value against the homes built by my competitors."

Spider has been extensively tested to show compliance with Federal Trade Commission (FTC) rules and local, state and national building codes. Spider has also passed the ASTM tests for Thermal Performance, Fire Resistance, Corrosion Resistance, Fungi Resistance and Water Vapor Sorption.

Johns Manville, a Berkshire Hathaway company, is a leading manufacturer and marketer of premium-quality building and specialty products. In business since 1858, the Denver-based company has sales in excess of $2 billion and holds leadership positions in all of the key markets that it serves. Johns Manville employs about 8,500 people and operates 43 manufacturing facilities in North America, Europe and China. Additional information can be found at


Johns Manville
Scott DeShetler, 303-978-3111
Linhart McClain Finlon for Johns Manville
Elana Tapper, 303-383-4606