Foster Interior Defense Mold Resistant Coating (40-50) is a high-performance, water-based coating engineered to provide long-term protection against mold and mildew growth in interior environments. This coating incorporates EPA-registered antimicrobial agents that inhibit the growth of odor-causing bacteria, mold, and mildew on the surface of the cured film.

Designed for use in areas prone to moisture and contamination, Interior Defense is ideal for applications such as attics, wall cavities, crawl spaces, floor joists, and other structural areas following mold remediation. It can be applied to a wide range of substrates, including wood studs, OSB, plywood, drywall, painted surfaces, masonry, and metal, making it a versatile solution for both restoration and preventative maintenance.

The coating forms a tough, water-resistant barrier that helps protect surfaces without significantly affecting their ability to dry, thanks to its high vapor permeability. Its low viscosity and excellent body allow for easy application using brush, roller, or airless spray equipment, ensuring consistent coverage and a smooth finish.

Interior Defense is designed for efficiency, with a quick drying time of approximately 40 minutes to the touch and about 2 hours to fully dry under normal conditions. The low-odor formulation supports use in occupied or sensitive environments, while compliance with MAS Certified Green® and LEED® low-emitting material standards reinforces its suitability for environmentally responsible projects.

Key Features

• Inhibits mold, mildew, and odor-causing bacteria on coated surfaces
• Water-based, low-odor formula suitable for indoor environments
• Forms a tough, water-resistant yet breathable protective barrier
• Fast-drying and easy to apply by spray, brush, or roller
• Suitable for wood, drywall, masonry, metal, and other building materials