company tower banner
Dissco Company Logo

DISSCO® 521 Premium Grade Non-Fibered Foundation Coating

1 of 6 products in this brand
DISSCO® 521 Premium Grade Non-Fibered Foundation Coating is a non-fibered asphalt base coating designed for use as a below grade foundation damp-proofing for applications where a high-water content or hydro-static pressure is not present. It is designed to prevent moisture and/or dampness that may naturally be present in the soil from penetrating a foundation wall providing corrosion protection and preventing the damp or musty feeling common to many basements. For applications where a high moisture content, hydrostatic head or high-water table is present it is recommended to upgrade to a true waterproofing compound. It will adhere to almost any material such as concrete, masonry block, wood, steel, plastic, and many other surfaces.

Product Type: Base Coat

Compatible Substrates & Surfaces: Concrete, Metal, Plastics, Steel, Wood

Features: Corrosion Resistant, Water Resistant

Application Method: Brush, Roller, Spray

  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Product Type

Features & Benefits

Ready-to-Use Product Features

Applications & Uses

Application Method
Compatible Substrates & Surfaces
Recommended Application Specifications

DISSCO 521 can be applied as a one or two coat application, by roller, brush or sprayed with adequate airless equipment. It is recommended that the DISSCO 521 be spray applied on below grade concrete and masonry structures so that a proper coverage can be achieved. An application by spraying causes the coating to be forced into the porous surface characteristic of concrete forming and masonry block. Spray equipment should maintain at least 600 psi at the spray tip to achieve proper penetration. While spraying pay close attention to surface irregularities to prevent shadows.

DISSCO 521 is ready to use directly from the container, no thinning is required. Heating of the product may be required in cold climates or during the winter months. It is recommended that DISSCO 521 be warmer than the surface it is to be applied to improve set time and adhesion to the surface. Ensure the surface to be coated is clean and dry. All honeycomb, rock-pockets, porous surface characteristics and/or surface irregularities should be parged or filled with a nonshrink cementitious grout or similar material compatible with the surface to ensure a uniform surface. It is recommended that masonry block be parged over the entire surface to be coated prior to dampproofing so that a better seal can be achieved. It is recommended that down spouts and surface irrigation be directed away from the structure and a functional perimeter drainage system designed by a registered engineer be installed by a qualified installer.

For a one-coat application it is recommended that the DISSCO 521 be applied at a rate of 1.5 to 2 gallons per 100 square feet of area with a finished dry film thickness of approximately 12 mils.

For a two-coat application apply the first coat at a rate of 1.5 to 2 gallons per 100 square feet of area. The first coat should be allowed to dry for at least four hours before a second coat is applied. Apply a second coat at a rate of 1 to 1.5 gallons per 100 square feet of area with a finished, two coat, dry film thickness of approximately 20 mils.

Properties

Color
Physical Properties
ValueUnitsTest Method / Conditions
Flash Point103 - 145°F-
Vehicle Solids45 - 55%-
Volatile Vehicle45 - 55%-
Weight per gallon7.2 - 7.6lbs.-

Technical Details & Test Data

Specifications

DISSCO 521 is manufactured from high grade industrial type blown asphalt and industrial grade mineral spirits.

Base asphalt meets specification ASTM D-449 type II

DISSCO 521 meets or exceeds specifications:

  • ASTM-D-41 Type II
  • Federal specification SS-A-701

Safety & Health

Caution

It contains mineral spirits. Do not use near fire or flame. Use with adequate ventilation. Vapor is 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 rech of children.

Packaging & Availability

Packaging Type
Availability

DISSCO 521 is available bulk and in packaged sized of 5-gallon pails or 55-gallon drums.

Storage & Handling

Storage & Handling

DISSCO 521 will not freeze, may be stored outdoors. When temperature is below 60°F store product indoors overnight prior to use. Clean equipment with a good citrus based degreaser or regular mineral spirits.