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Water-Proof Paint Additive


SEI Paint Proofer increases paint performance by adding long-term water repellency to the paint itself. Paint Proofer also conditions the paint for easier application and greatly improves the fade resistance properties. This water-based, acrylic micro-emulsion additive increases the life, value and performance of all latex paints and stains.

Performance Advantages:

  • Provides 100% water repellency
  • Prevents mold and mildew problems by keeping paint film dry
  • Is compatible with all latex paints and stains
  • Recoatable with all latex paints
  • Prevents damage caused by moisture intrusion, freeze-thaw and weather extremes
  • Extends substrate life by keeping underlying surfaces dry
  • Prevents peeling problems attributed to moisture(click to enlarge)
  • Prevents color fading and water spotting
  • A Paint Proofer film is self cleaning, keeping surfaces looking like new

Left side contains SEI Paint Proofer

Click image for close-up.

Application Advantages:

  • Improves flow and leveling qualities
  • Longer wet-edge reduces lap marks
  • Minimizes brush marks, roller drag and spray tip plugging
  • Extremely low VOC
  • Complies with all known National Air Pollution Standards
  • Paint Proofer will not change the color or hiding power of paints or stains

Directions for Use:

Mix one part Paint Proofer to four parts paint or stain.  Can go as high as 1:10.

The SEI Paint Proofer should be considered to be 20% of the total paint volume required. Stir paint or stain as Paint Proofer is added. Apply enhanced product when air and substrate temperatures exceed 50 degrees F. Drying time will be longer on cold or humid days. All surfaces must be thoroughly cleaned to ensure proper bonding.

Recommended Uses:

Use the SEI Paint Proofer on both new and remedial construction. It is used in commercial, industrial and residential environments.

  • New and used brick
  • Poured-in-place concrete
  • Concrete block
  • Precast concrete
  • Stucco
  • Plaster
  • Wood
  • Lap siding
  • Previously painted surfaces
  • Drywall
  • Plywood
  • Masonite and composite panels

Use the SEI paint proofed paint or stains on the following surfaces:

  • Ornate woodwork
  • Painted Ladies
  • Fences and Gates
  • Garage doors
  • Balusters and railings
  • Greenhouses
  • Outdoor furniture
  • Windows and trim
  • Siding
  • Gutters Doors
  • Walls


  • Product Type: Water-based Concentrated Formula
  • Chemistry: Modified Micro-Emulsion
  • Chemical Solids: 33%
  • Weight per gallon: 8.5 lbs.
  • pH: 8.5-9.0
  • Mix Ratio: 1 part Paint Proofer 4 parts paint
  • Resistance to Ultraviolet: Excellent
  • Resistance to Abrasion: Excellent
  • Resistance to Dust Collection: Excellent
  • Freezable: Protect from freezing
  • Odor: Low
  • Shelf Life: Excellent
  • VOC's: 30 grams per liter, less water

Water Proof Paint Additive Product Data Sheet

Water Proof Paint Additive MSDS (Password protected)

Waterproof Paint Additive Brochure

(You will need Adobe's free Acrobat Reader to view these files.)

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