Max-A-Seal DP

Non-fibered emulsion coating & air/vapor barrier system

Max-A-Seal DP® is a Non-Fibered Emulsion Coating designed according to ASTM D1227, Type III specification. This asphalt emulsion coating is formulated to provide excellent damp-proofing and vapor barrier properties, making it suitable for various applications. It is available in fibered, non-fibered, and trowel-grade versions to suit different application needs.

  • Suitable as a protective coating for asphalt, metal, wood, and masonry surfaces.
  • Zero VOC content, making it environmentally friendly and compliant with ICF forms.
  • 50% solids content, ensuring a robust application.
  • Resists water penetration while allowing moisture vapor to escape.

Tech Sheet
Safety Sheet
Sell Sheet


  • Surface Preparation: Must be applied to a dry or damp surface free from foreign matter. Can be applied to “green” concrete.
  • Application Rate: 40 ft²/gal for a 40 mil wet film or up to 100 ft²/gal, depending on the application.
  • Double Coating: Recommended for tie seams.
  • Equipment: Can be applied using a Graco GH833 Siphon Pump, 1/2” hose, Blue Texture Spray gun, and a GHD 661 Spray Tip, or comparable equipment. Remove the in-line filter when using.
  • Temperature Conditions: Apply when surface and air temperatures are at 45° F and rising.


  • Available in 5 gallon pails (18.9 L), 55 gallon drums (208.2 L), and 275 gallon tote (1,041 L).

Shelf Life

  • Shelf life is 1 year from the date of manufacture when stored in the original, tightly closed container.
  • Do not store at temperatures exceeding 110°F.

Test Data

  • Solids (%): 50±3% minimum by weight (ASTM C1250)
  • Density: 8.1 lbs/gal±4 (0.92 G/cm2)
  • Application Methods: Airless spray, brush
  • Cure Time: 4-24 hours
  • Dry Time: 30 minutes
  • Elongation: 500% average
  • Adhesion to Concrete: Excellent
  • Low Temperature Flexibility: Remains flexible to –10°F
  • Water Vapor Permeance: >5.5 Perms
  • Air Permeability (ASTM E2178): 0.00159 L/s/m2 at 75 Pa
  • Liquid Water Absorption: <0.5% by weight
  • Resistance to Degradation: Excellent against bacterial, algal, and fungal attacks
  • Resistance to Chemical Attacks: Highly resistant to acids and salts
  • Re-emulsification: None