Foster 40-20 Fungicidal Protective Coating, 5gal

  • Model: FOS4020-5
  • Shipping Weight: 52lbs
  • Manufactured by: Foster

Foster 40-20 Fungicidal Protective Coating



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Foster 40-20 Fungicidal Protective Coating



Foster® 40-20™ Fungicidal Protective Coating is a polyacrylate copolymer emulsion specifically formulated for long-term fungicidal activity, with no loss of activity on aging. It is formulated to effectively prevent the spread of molds and odor-causing bacteria on its surface. It provides a tough, elastic, decorative finish that allows for movement without splitting to create lodging places for bacteria. FOSTER Fungicidal Protective Coating provides a cost effective decorative finish resistant to many industrial chemicals, together with long-lasting protection. It can be used on walls, ceilings, pipes, interior and exterior surfaces of HVAC duct systems, and wherever effective controls are essential. FOSTER Fungicidal Protective Coating guards against the regrowth and spread of odor-causing bacteria and molds on the surface of the coated HVAC system or its treated components only. As a result, the building occupants may enjoy a work space free of the odor problems often associated with contaminated HVAC duct systems.


COLOR: White


AVERAGE WEIGHT / U.S. GALLON (ASTM D 1475): 11.9 lbs. (1.36 kg/l)

AVERAGE NON-VOLATILE (ASTM D 2369): 58% by volume

COVERAGE RANGE: Wet coverages shown are for smooth, non-porous surfaces. Porous or rough surfaces may require higher gallonage to obtain required thickness. 1.25 gal./100 sq. ft. (0.51 l/m2) 0.020 in. wet thickness (0.51 mm) 0.011 in. dry thickness (0.27 mm)

DRYING TIME (ASTM D 1640): Set to Touch: 4 hours Dry Through: 16 hours

WATER VAPOR PERMEANCE (ASTM F 1249): Tested at 90% R.H. differential and 100ºF (38ºC) 6.0 perms at 0.011 in. (4.0 metric perms at 0.28mm)

SERVICE TEMPERATURE LIMITS (FSTM 70): (Temperature at coated surface)-20ºF to 200ºF (-29ºC to 93ºC)

SAFETY: Wet Flammability (ASTM D 3278 No Flash to Boiling 210ºF (99ºC)


(ASTM E 84): Flame Spread: 15 Smoke Developed: 5 Tested at a coverage rate of 80 square feet per gallon (1.96 m2/liter). Applied to inorganic reinforced cement board. The flame spread may vary at different product thicknesses and/or when applied over other surfaces.

Foster Fungicidal Protective Coating meets NFPA 90A and 90B 25/50 requirements.

Product Data Sheet
Material Safety Data Sheet (MSDS)