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Mold Prevention

Mold Proofer® Sealer

Seal and prevent the growth of microorganisms on the film.

Concrete, Basements, Floors, Walls, Structures

SMP-82 Mold Proofer Sealer is a robust nanotechnological interior or exterior sealer that incorporates a proprietary zero VOC EPA registered and non-leaching antimicrobial.  This coating self cross links and forms a Dehydration Matrix that prevents moisture intrusion and the growth of microbiological life on the film.  This product can be used on any building material for protection against microbiological infection on the film.  SMP-82 can be applied to mineral substrates, lumber, particle board, walls, ceilings, sub floors, ductwork, wood and drywall.  SMP-82 provides outstanding sealing and antifungal characteristics on the film. SMP-82 exceeded the performance requirements of the following microbiological resistant tests: ASTM D5590, D3273, D3274. 

Test reports available upon request.


  • Ultimate mold, fungus, mildew resistance on the film.
  • Non-leaching and non-toxic
  • Flexible - Resists cracking, chipping and peeling
  • Nanotechnology provides excellent durability and adhesion
  • Provides protection and penetration of water
  • Seals water extractives and tannins in redwood and cedar
  • Water-based, clear and flat
  • Dry Time: 2 hours
  • Coverage: 500-600 sq. ft. per gallon.
  • Flash Point: None
  • 1-gal, 5-gal, 55-gal, 278-gal tote


Removal of any microbiological life prior to application is crucial.  Mix before use and keep product uniform.  May be brushed, rolled, sprayed or fogged.  Saturate surface to be treated thoroughly.  Apply a second coat if needed.  Recoating can be wet on wet, wet on dry, and even days or weeks apart.  If a coated surface encounters rain it will not remove the coating.  SMP-80 can be applied onto a wet substrate as it is a water based system.  Application to open studs and framing is less efficient than application in a controlled OEM environment.  For field applications, assume approximately a 40% conversion when using a quality electric or airless sprayer.  Using a Hudson or pump sprayer would tend to yield an even lower conversion and allows for a less uniform treatment.  Two coats should be applied in this environment.  Application should be carried out by senior and/or responsible and conscious individuals who understand the importance of coverage and spray uniformity.  Never thin the product down.  Clean tools and hands with warm soapy water and rinse thoroughly. 



1-gal, 5-gal, 55-gal, 278-gal tote

Coverage and product uniformity must be in strict accordance with SEI Chemical, Inc.’s specification as results may vary.




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