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Tech Data

Pro Seal #905



Packaging 1 Gallon Pails & 5 Gallon Pails
Net Weight
8.5 lbs; 42 lbs
Appearance/Color Black liquid
Odor Asphaltic odor


Toxicity Toxic
Flash Point N/A
Boiling Point 212°F (100°C)
Melting Point N/A
Minimum Application Temperature 60°F (15.5°C) and on the rise
Specific Gravity (Water = 1) 1.05
Vapor Pressure (mm Hg) Nearly equal to water
Vapor Density <1
Evaporation Rate (Butyl Acetate = 1) Approx. 1.8
Coverage Approx. 31 sq. ft. per gallon at 60 mils thick
Application Method Brush, trowel, airless spray unit
Application Rate 150 sq. ft. per 5 gallon pail
Cure Time 24 hours before adding foam, drainage boards, or backfilling (depending on weather conditions)
Viscosity (at 73.4°F, 23°C) 90-110 ku (ASTM D562)
Solids Content % 50-65% (ASTM D2697)
Initial Elongation (at 73°F, 23°C) >300% (ASTM D2370)
Permeance (60 mil film, 73.4°F, 23°C, 50% R.H., Inverted), Perms <1.0 (ASTM D1653)
Wet Adhesion To Galvanized Metal 6.0 (ASTM C794/D903)
Standard Practice For Resistance To Wind-Driven Rain For Exterior Coatings On Masonry Pass (ASTM D6904)
Standard Test Method For Water Penetration And Leakage Through Masonry Pass (ASTM E 514-05c)
Standard Test Method For Field Determination Of Water Penetration Of Masonry Wall Surfaces Pass (ASTM-C1601)
Clean Up Use soap & water on tools before material dries
Solubility In Water Easily dispersible in liquid state
Material Stability Stable
Extinguishing Media Water spray, foam, dry chemical, carbon dioxide, other
Conditions To Avoid Keep from freezing and extreme heat
Materials To Avoid Strong oxidizers
V.O.C 0 gm/liter (max)
Shelf Life 2 Years

Application Instructions

Proper surface preparation is important to ensure optimal adhesion. Clean the surface of all debris, dust, and dirt. The surface should be dry. The application temperature minimum is 60°F (15.5°C) and rising. If the temperature is predicted to drop below 50°F (10°C) within a 24 hour period, do not apply. Also, do not apply is rain is imminent or forecasted within a 24 hour period. If the area is one in which fog or dew is prone to accumulate in the evening, coat in the morning and complete by early afternoon (3:00 pm) in order to prevent wash off (which occurs if fog, dew, or rain moves in before the coating is dry). Wear gloves and eye protection when mixing and applying Pro Seal #905. To apply, thoroughly stir the pail and apply via brush, trowel, or airless spray unit (Tip Size: .021 to .025). Apply at a rate of 150 square feet per 5 gallon pail. Let material dry for 24 hours before applying foam, drainage boards, or backfilling (depending on weather conditions). Do not allow material to dry on tools; for clean-up, simply wash with soap and water.