Foster® 42-42 Proactive Defense Mold Resistant Sealer
Designed specifically for easy application on construction sites. Used on building materials to form a water-resistant sealer that resists mold growth on its surface. Formulated for use both during construction phase andafter the walls of the structure have been enclosed. Protects trusses, studs, wallboard, plywood, sheathing and other framing construction materials from excess water penetration. Formulated for use on surfaces such as wood, gypsum wallboard, plaster, cement blocks, and other construction materials. Specially formulated with EPA registered fungistatic agents to provide long-term resistance to mold or mildew growth on its surface. Dries fast with a low viscosity and high coverage rate. Prepares the surface for painting with latex or oil based paints. Minimizes water absorption into coated product without impeding water vapor transmission. Meets requirements for LEED IEQ 4.2 Low-Emitting Materials, Paints and Coatings. VOC: <50 g/l, less water and exempt solvents.
Do not store or apply below 40ºF (4ºC) or above 100ºF (38ºC). Surface must be clean and free of wax, grease, oil, dirt, and other surface contaminants before the product is applied. Water based products may corrode carbon steel spray equipment. Corrosion resistant pumps and fittings are suggested. This product does not protect users or others against bacteria, viruses, germs, or other disease organisms. It does not take the place of normal cleaning & disinfecting procedures. Not recommended for long-term exposure to direct sunlight.
DO NOT DILUTE.
STIR WELL BEFORE USE.
Brush, spray, or roller
AVERAGE WEIGHT / U.S. GALLON (ASTM D 1475):
8.5 lbs./gallon (1.02 kg/l)
AVERAGE NON-VOLATILE (ASTM D 2369):
16% by weight (14% by volume)
Subject to type of surface and nature of material being coated and application equipment. See application guide on back.
250-350 ft.2 /gal. (6.1 to 8.6 m2 /liter)
450-550 ft.2 /gal. (11.0 to 13.5 m2 /liter)
Hard Non-Porous Surfaces:
500-600 ft 2 /gal (12.3 to 14.7 m2 /liter)
DRYING TIME (ASTM D 1640):
Dry Through: 1 hour at ambient High humidity or low temperatures retard drying.
SERVICE TEMPERATURE LIMITS (FSTM 70):
(Temperature at coated surface) -20 F to 180 F (-29 C to 82 C)
WET FLAMMABILITY (ASTM D 92) No flash to boiling, 210 F (99 C)
SURFACE BURNING CHARACTERISTICS (ASTM E 84):
Flame Spread: 0
Smoke Developed: 5 Tested at a coverage rate of 300 sq.ft./gallon (7.4 m2 /l). Applied to inorganic reinforced cement board. The flame spread may vary at different product thicknesses and/or when applied over other surfaces.
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Foster, Proactive Defense and 42-42 are trademarks of H.B. Fuller Construction Products Inc. Designed specifically for easy application on construction