DISSCO 551 Non-Fibered Roof Coating


DISSCO 551 is a ready to use, non-fibered asphalt base coating of heavy paint consistency, manufactured with high grade industrial type blown asphalts and industrial grade solvents compounded with special slow drying, penetrating weatherproofing oils.

DISSCO 551 is specially formulated for priming all dried out asphalt based composition roof surfaces to resaturate and revitalize the old felt to a full-bodied, uniform, weatherproof base for proper application of DISSCO 550 Fibered Roof Coating.

DISSCO 551 is also excellent preventative maintenance coating to prevent the sun and other weathering elements from deteriorating the composition roofing. Also widely used as an economical protective coating for masonry and metal surfaces, such as metal roofs, gutters, spouts, tanks, structural iron, underground pipes, etc. which need protection against water and rust damage. DISSCO 551 is inert to mild acids and alkali, chemically inert, non-poisonous and non-toxic when used as directed.


DISSCO 551 is ready to use directly from the container. No thinning or heating required. DISSCO 551 can be applied by roller, brush, or sprayed with adequate airless equipment. The surface to be coated must be clean and dry, free of any material which prevents proper adhesion to the surface.


It is recommended that the DISSCO 551 be applied at a rate of 1 to 2 gallons per 100 square feet of area. Application rates may vary with the condition of the surface to be coated.

Color Black
Weight per gallon 7.6 lbs.
Vehicle solids 50 - 60 %
Volatile vehicle 40 - 50 %
Additives 1 - 4 %
Flash point 105° F
Base asphalt meets specification ASTM D-449 Type II
DISSCO 551 meets or exceeds specifications ASTM D-41
Federal Specification SS-A-701

DISSCO 551 is available in three standard viscosities (custom grades are available by special order), and is available bulk and in packaged sizes of 5-gallon pails or 55-gallon drums.

  • WILL NOT FREEZE, may be stored outdoors.
  • When temperature is below 60°F - store product indoors overnight prior to use.
  • Clean equipment with mineral spirits.

Contains mineral spirits. Do not use near fire or flame. Use with adequate ventilation. Vapor harmful. Avoid prolonged or repeated contact with skin or breathing of vapor. Close container tightly after each use. Harmful or fatal if swallowed. If swallowed, DO NOT INDUCE VOMITING. Call physician immediately. KEEP OUT OF REACH OF CHILDREN.


DISSCO warrants its products to be free of defects in materials, but makes no warranty as to appearance or color. Since methods of application and on site conditions are beyond our control and can affect performance, DISSCO makes no other warranty, expressed or implied, including warranties of MERCHANTABILITY and FITNESS FOR A PARTICULAR PURPOSE, with respect to DISSCO coatings. DISSCO's sole obligation shall be, at its option, to replace, or to refund the purchase price of, the quantity of DISSCO coating proved to be defective and DISSCO shall not be liable for any loss or damage, including incidental or consequential damages, arising from the use of DISSCO coatings.

In case of an EMERGENCY involving any DISSCO product please call:
Info-Trac @ 1-800-535-5053

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Denver Industrial Sales & Service Company

850 South Lipan Street
Denver, CO 80223
Ph. (303) 935-2485 · Fax (303) 935-6787
Toll Free (877) 935-2485

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