DISSCO 501 Primer


DISSCO 501 is a thin nonfibered asphalt base compound designed to be used as a primer for hot applied waterproofing materials and/or polymer modified rolled sheet products. DISSCO 501 may also be used with almost any other product requiring an asphalt base primer. The 501 is manufactured using the highest quality industrial grade materials available to produce the best primer possible. DISSCO 501 is manufactured using industrial grade blown asphalts and slow drying aliphatic solvents that enable the primer to thoroughly penetrate the surface being primed allowing for better adhesion of the material being applied to it.


DISSCO 501 is ready to use directly from the container, no thinning or heating is required. Apply DISSCO 501 by roller or spray at an application rate as specified or as recommended by the product manufacturer for the product being applied requiring primer. If no manufacturer recommended specifications are available, DISSCO recommends that a one-coat application of DISSCO 501 be applied at a rate of 0.6 to 1 gallon per 100 square feet of area with a finished dry film thickness of approximately 5 to 8 mils.

Color Black
Weight per gallon 6.9 - 7.3 lbs.
Vehicle Solids 40 - 60 %
Volatile Vehicle 40 - 60 %
Additives 2 - 5 %
Flash Point 103 - 140 °F
Base asphalt meets specification ASTM D-449 type II
DISSCO 501 meets or exceeds specifications ASTM D-41
Federal specification SS-A-701

DISSCO 501 is available in packaged sized of 5-gallon pails and 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

DISSCO Waterproofing Logo

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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