STAIN-PROOF M™ is an impregnating, invisible, fully breathable, silane-based impregnating sealer. STAIN-PROOF M™ provides superior, longer lasting protection against common forms of damage caused by the ingress of oil and water-based liquids, including: Staining, efflorescence, freeze-thaw / salt spalling and picture framing. It also keeps surfaces looking good for longer and makes them easier to clean and maintain. STAIN-PROOF M™ is optimized for maximum penetration and bonding efficiency across the widest range of exposed cementitious and non-cementitious porous building materials, from the densest natural stones to highly porous precast concrete, brick, terracotta and grout.

General Information

Typical Applications:

  • STAIN-PROOF M™ is suitable for outdoor residential and commercial applications, including: building facades, floors, walls, swimming pool surrounds, patios, garages, driveways, pathways, and entertaining areas.
  • STAIN-PROOF M™ is designed for new or restored, horizontal or vertical, architectural or structural surfaces, including: Cladding, tile, paving, blockwork, brickwork, precast panels, stack stone, veneers and grout joints.
  • Recommended for use on horizontal surfaces which require protection from oil-based staining from food and beverages as well as water ingress.

Suitable surfaces:

Suitable for a wide range of porous building materials, including natural stone, cast stone, brick, terracotta, concrete and grout.


  • Unique super-penetrating, permanent bonding technology for long lasting protection.
  • Superior water and oil repellence for superior stain protection: Tested in accordance with ISO 10545-14 Determination of resistance to stains Class 5 (highest class).
  • Premium protection against common types of damage caused by water and chloride ion ingress, including freeze-thaw / salt water spalling, efflorescence, picture framing and damp migration.
  • Smaller silane for maximum penetration, even into dense natural stones such as granite.
  • Forms full covalent chemical bonds, lining the pores of the treated material.
  • Formula is optimized to facilitate efficient bonding across all types of porous masonry, including non-cementitious, low pH materials such as brick and natural stone.
  • A 15 year performance warranty is available – see Warranty section below for details.
  • Designed for outdoor use on residential and commercial use.
  • No color change on most stones and masonry surfaces.
  • Treated surfaces are easier to clean and remain looking good for longer.
  • Fully breathable – allows water to evaporate and escape freely as water vapor, preventing harmful moisture buildup inside the treated material.
  • Stands up to alkaline cleaners and pressure hosing.
  • Retains slip resistance when applied according our written instructions and guidelines.
  • High resistance to alkaline (high pH) environments. Concrete is highly alkaline / base and can severely shorten the life of other technologies.
  • Able to seal hairline cracks up to 0.3 mm (0.012 in.)
  • Non film forming so it cannot flake or peel and is resistant to UV
  • Dry-Treat only uses silanes which produce alcohol. Dry-Treat sealers do NOT contain methoxy silanes which emit methanol and can cause blindness / death


A 15 year performance warranty is available if product is applied by a level 4 Accredited Applicator at the optimal application rate (see section on Total Application Rates), according to our written instructions  and guidelines and samples are provided to us for testing. Industry professionals can contact their local Dry-Treat representative or email to enquire about Accredited Applicator training and certification.

Technical Data:

  • Active Content: >49%
  • Specific Gravity: 0.84
  • Color: Clear colorless to light straw yellow liquid
  • Weight: 7.02 lbs / gallon; 0.84 kg / liter
  • VOCs: ˂629 g/liter (using EPA method 24)

Pack size:

  • USA and Asia Pacific – 5 gallon / 18.9 liter; 54 gallon / 204.5 liters; 250 gallon / 946 liter – special order
  • Europe – 5 Gallon (18.9Litre); 54 and 250 gallon – special order.

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By Published On: August 25th, 2018Categories: , , Comments Off on Dry-Treat Stain-Proof M™ Premium Water and Oil Repellent Impregnator