Self-Leveling and DP600NS

5

Self-Leveling Procedure for Doing Concrete Repairs

1.

Keeping the mixer tip at the deepest portion of the repair area, dispense

into the prepared cavity, depression, void, groove or crack.

2.

Keep the end of the mix tip immersed in the product as the repair is being

filled.

3.

Use a spreader to cover the repair and leave an excess of at least 1"

around the repair edges. Overfilling 3M™ Scotch-Weld™ Urethane

Adhesive DP600 and allowing it to overlap approximately one inch along

the edges of the repair tapering to just a few mils thickness provides a

substantial tie into the concrete and increases the lifetime of the repair.

4.

Place the spreader over the filled repair.

5.

Press down and hold for about 30 seconds to spread the repair

compound.

6.

Let repair cure before removing the spreader.

7.

3M™ Scotch-Weld™ Urethane Adhesive DP600 will self-level and set

approximately within one minute and leave a slight meniscus. If desired,

one can create a repair flush and level to the concrete floor on smaller

areas up to 6 inches square by overlaying a slightly stiff polyethylene

sheet (approximately the modulus of a plastic spreader) just prior to the

set of 3M™ Scotch-Weld™ Urethane Adhesive DP600.

8.

At 75°F (24°C), a 1/4"-thick section sets and becomes tack-free within 4

minutes and will cure within one hour. Note: Thicker masses or substrates

at higher temperature take less time to cure. Thinner masses or substrates

at lower temperature take more time to cure.

Repairing Leading Edges on Steps and Stairways

1.

For sharp edges: Follow the procedures above and shape edge by using

two spreaders. Use one spreader to flatten the vertical edge of repair

and the other spreader for the top of repair.

2.

For round edges: Form round edges with a piece of plastic contouring

sheet on small repairs (less than 3" x 3"). Plastic must be at least 1" larger

around than the edges of the repair.

Repair Clean-up and Finishing

1.

Remove masking tape from repair.

2.

Shave or grind cured product with 36 grit sandpaper to achieve desired

shape.

3.

Sand with 80 grit sandpaper to remove any scratches.

4.

If 3M™ Scotch-Weld™ Urethane Adhesive DP600 Self-Leveling or

DP600NS is applied in a traffic area, apply sand or some type of grip to

repaired surface area.

Installation

Instructions

(Continued)