Johns Manville Spider® Plus fiberglass blow-in insulation, now featuring interlocking fiber technology, is the next evolution of the JM Formaldehyde-free™ insulation family. Interlocking fiber technology allows the fibers to spring and lock into cavities with no adhesive or netting. This complete coverage results in superior thermal performance and sound control. And with a simple installation that’s typically faster than other spray systems and unprecedented drying times, Spider Plus saves professional installers time and money on every project.

Store insulation indoors. Keep insulation clean and dry at all times. When transporting, cover completely with a waterproof tarpaulin as necessary.

Thermal and Acoustical Insulation of Interior and Exterior Walls and Ceiling/Floor Assemblies (with stud or joist cavities).

Applications

• Wood-frame construction – residential homes and light commercial buildings
• Metal-frame construction – residential and commercial buildings
• Manufactured homes – modular or manufactured housing
• Engineered-wood construction – assemblies framed with 12" to 19.2" on-center cavities

Advantages

• Improves indoor air quality: because it’s made without formaldehyde.
• Energy efficient: provides superior resistance to heat transfer with R-values up to R-23 in a 2x6 cavity.
• Covers completely: gap-free coverage maximizes thermal and acoustical performance and minimizes air leakage where energy can escape.
• Resilient: interlocking lightweight fiberglass prevents settling.
• Controls sound: reduces transmission of sound through exterior and interior walls and floor/ceiling assemblies.
• Easy to install: insulates a typical 2,700 sq. ft. home in 2–3 hours, twice as fast as other spray-in systems.
• Mold and mildew resistant: fiberglass is naturally mold resistant.
• Fire resistant and noncombustible
• Noncorrosive: does not accelerate corrosion of pipes, wiring or metal studs.
• Durable: will not rot, mildew or otherwise deteriorate. JM Spider Plus insulation will not hold moisture or permanently lose R-value. 
• Fast drying: requires less moisture than other spray-in systems during installation and dries immediately when installed as recommended.