OxyPrep - Instant Mold Stain Remover

(8 customer reviews)



Ready-to-use, instant mold stain remover that eliminates scrubbing for both indoor and outdoor use. For use on wood, composite materials, concrete, brick, stone, grout, masonry, gypsum, painted surfaces.

Shelf Life: 15 months sealed, 9 months opened | Coverage: Up to 300 ft2 per gallon.

Xactimate Code:  HMR GRMS

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OxyPrep is a ready-to-use, water-based, instant mold stain remover. It eliminates the messy scrubbing, sanding and/or media blasting that can also lead to cross-contamination issues. When used with Oxypar LR to extract deeply embedded soil load, it is Part 1 of the REACT|EXTRACT Mold Remediation System.

To leave behind the freshest fragrance, add SorbAssist to OxyPrep prior to use or ULV fog SorbAssist after stain removal is complete.


  • Ready-to-use (no dilution needed)
  • Instant stain removal
  • Penetrates through soil load to remove mold & microbial staining
  • Can be used as Step 1 of the REACT|EXTRACT Mold Remediation System
  • Combine OxyPrep with SorbAssist to eliminate chemical odors and to leave behind a fresh fragrance.


OxyPrep may be used on most construction materials including treated and untreated lumber, OSB, particle board, masonry surfaces, concrete, brick, wall board, painted surfaces and composite construction materials. Surfaces also include sheathing, trusses, framing, joists, plates, pillars, posts, beams and studs.


OxyPrep compatible with all Enviroguard products including other Cleaners & Stain Removers, Disinfectants & Deodorizers, Coatings and Sealants and Enviroguard Equipment.

Coverage Rate

OxyPrep will yield 150-300 ft2 of coverage per ready-to-use gallon based upon surface texture, porosity and application method. Coverage rates do not include loss from over-spray or over-use.

Competitive Difference

Stabilized to prevent deterioration and shelf stability issues as well as to maximize safety for the user. Performance is amplified through the synergy of the REACT/EXTRACT remediation system.



  • Eye & Respiratory Protection: Full Face Respirator w/ Multi-gas/Multi-vapor Combination Cartridge or Supplied Air Respirator w/ PAPR Cartridge
  • Skin Protection: Chemical Resistant Gloves (Nitrile) and Coverall rated for a minimum of 4 hours and up to 8 hours based upon prolonged chemical exposure and the need for tear resistance
  • Consult SDS for additional safety details

First Aid

Burning, pain and severe corrosive skin damage. Causes serious eye damage. Symptoms may include stinging, tearing, redness, swelling and blurred vision.  Permanent eye damage including blindness can result. If inhaled: Move to fresh air. Call a physician if symptoms develop or persist. If on skin: Take off all contaminated clothing immediately. Rinse skin with water/shower. If symptoms develop or persist call a physician or poison control center immediately, chemical burns must be treated by a physician. Wash contaminated clothing before reuse. If in eye: Immediately flush eyes with plenty of water for at least 15 minutes. Remove contact lenses, if present. Continue rinsing. Call a physician or poison control center immediately, if symptoms develop or persist. If ingestion: Call a physician or poison control center immediately. Rinse mouth. Do not induce vomiting. If vomiting occurs, keep head low so that stomach contents do not get into lungs.




Chlorinated products will damage surfaces if left unneutralized. Always neutralize with OxyPar LR following use.

Cleanup & Disposal

For unused product, return to original container making sure to not cross contaminate with other chemicals. If spilled, contain material and remove with an inert absorbent. Sweep up and dispose of material. Dispose of used product per all current federal, state and local regulations.

Shelf Life & Storage

When stored at temperatures between 40-90F and out of direct sunlight. Shelf life is 15 months sealed and 9 months once opened.

Additional information

Weight N/A
Dimensions N/A

1 Gallon, 4x1 Gallon Case, 5 Gallon Pail

Support Documents

Technical Documents



1 Gallon Label

5 Gallon Label

Sales Support 
Oxyprep Fundamentals Guide

Oxyprep Sell Sheet

Sales Materials Co-Branding

To have sales materials co-branded for your company, email us at marketing@enviroguarddirect.com. An Enviroguard representative will contact you to discuss:

  • The specific materials that you want co-branded
  • Quantities of each to be printed
  • Pricing per document

8 reviews for OxyPrep - Instant Mold Stain Remover

  1. Wayne Tyra (verified owner)

    It lightens stains on the wood

  2. Matthew Bair (verified owner)

  3. Jordan S

    Stuff works REALLY good.. usually have to spend hours in a Tyvek suit inside attics spraying, scrubbing, sweating, then re-spraying, scrubbing, and sweating some more. And still seal it to cover the mold stains.. I sprayed oxyprep on the affected decking in this attic, and literally watched the staining from the mold disappear. Half the time, half the chemicals, and half the sweat. Sold.

  4. Josh Sorensen

    I've used multiple products that are mold stain removers. Nothing can come close to OxyPrep! I'm so pleased with the product and looking forward to buying other products that Enviroguard offers.

  5. Paul Lewis (verified owner)

    We love Oxypar and Oxyprep. This is the best product we found at removed mold stains without the harsh overload of chemical smells. We've tried other products but however my team doesn't like them.

  6. Gabriela B. (verified owner)


  7. Chris Kiker

    Enviroguard products are by far some of the best you can buy and Oxyprep is is one we use in every job. This product not only works as described, it saves time and the results separate us from our competition.

  8. Zakhar Keselman

    Great products and support from the Enviroguard team. They are our supplier of choice for remediation.

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