(2 customer reviews)



Opaque, bright white, breathable and self-priming mold and moisture resistant coating for the protection of structural and architectural construction materials in unconditioned and moisture prone spaces. For both interior and exterior use.


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Opaque, bright white, breathable and self-priming mold and moisture resistant coating for the protection of structural and architectural construction materials in unconditioned and moisture prone spaces. For both interior and exterior use.

*Treated Articles Exemption - This product contains an EPA registered antimicrobial to protect the coating from non-public health fungi and odor causing bacteria. No public health claims are being made.


  • Breathable to prevent dry or wet rot conditions
Self-priming to cover stains and discoloration in one step
  • Acts as a moisture barrier to prevent moisture content increases
Forms a tough, resistant barrier to harsh environments and contaminants
  • Abrasion resistant and scrubbable
  • Tintable, Water-based and non-flammable


MaxGuard is used to protect most construction materials including treated and untreated lumber, OSB, particle board, masonry surfaces, concrete, brick, wallboard, composite construction materials and metals. Surfaces also include sheathing, trusses, framing, joists, plates, pillars, posts, beams and walls.


Consult SDS for details

Coverage Rate

For warranted best results, apply at 160 ft2 per gallon (800 ft2 per pail = 10 wet mils) based upon location, surface texture, porosity, age and application method. For best results, apply two even coats perpendicularly to each other (i.e. vertically and horizontally). Allow the first coat to dry to the touch before the second application. Does not include loss from over-spray or over-use.

Shelf Life & Storage

24 Months

Additional information

Weight N/A

3.5 Gal, 5 Gal Pail

Use and Instructions


All structural surfaces especially in unconditioned and moisture prone areas such as attics, basements and crawl spaces and for post-remediation specifications


MaxGuard is formulated as a ready-to-use coating. It can be applied with a brush, roller or airless sprayer to obtain an even finish. Do not apply past the point of run off. A cross-hatching technique is the best way to ensure sufficient wet/dry film thickness and complete coverage. Consult the Enviroguard New Construction Warranty and Enviroguard Existing Construction Warranty documents for details.

Your Problems

MaxGuard was designed to solve specific moisture problems.

Structural materials like wood, OSB and concrete are semi-porous to porous in nature. In unconditioned areas like basements, crawlspaces and attics, unsealed surfaces can hold high levels of moisture due to repeated bouts of condensation from mechanicals, improper ventilation, moisture release, and dew point events. In addition, natural disasters can drive large amounts of moisture into and through the building envelope to the point of substantial loss. In either case, elevated structural moisture content can ultimately result in mold growth, structural damage and poor indoor air quality.

Our Solutions

Seals Tenaciously

MaxGuard is a fast drying, self-priming protective coating. It's powerful adhesion comes from the industry's highest rated and tested resin system which "bites and locks" into surfaces for superior, and long-lasting protection.

Double the Product

Other leading coatings typically require 20 wet mils (80 square feet per gallon) to achieve warranted coverage. Due to MaxGuard's proprietary resin and antimicrobial systems, warranted coverage is achieved at only 10 wet mils (160 square feet per gallon). Double the coverage means half the product, in half the time.

Absolute stain blocking

MaxGuard yields a beautiful, bright white surface that covers ugly stains for a professional, uniform and finished appearance.

Uncompromised Moisture Resistance

Due to MaxGuard's superior resin system, it acts as a permanent barrier on surfaces to prevent moisture content increases. This durable acrylic polymer and ceramic technology provides a long service life that is covered by a 10-15 year existing or new construction warranty. 

Award Winning Protection

In 1996, our antimicrobial won the 1996 Presidential Green Chemistry Challenge Award for Designing Safer Chemistries. It's leach resistance ensures a long service life. It's non-persistence in the environment prevents pollution and liability.

Uni-Directional Breathability

MaxGuard is breathable to prevent against locking in moisture which could lead to wet or dry rot conditions. This works by allowing water vapor to escape from structural surfaces while preventing absorption from the environment.

Versatility for all projects

MaxGuard can seal new structures, protect existing structures or overcoat existing painted surfaces for additional protection.

Unmatched Warranty

At nearly half the wet mil thickness of other industry leaders, MaxGuard offers a 10-year limited warranty on existing construction and a 15-year limited warranty on new construction against mold formation on the coating.

Technical Documents


MaxGuard SDS

MaxGuard Container Label

2 reviews for MaxGuard

  1. Wayne Tyra (verified owner)

    Good protector and seals damaged stained wood

  2. Anonymous (verified owner)

    Worked as described.

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