Repair cracks by using one of the following methods

1. Open crack with the crack chaser or “V” blade. Brush A-300 Concrete Bonder Admix into the clean crack.
2. Mix 4 to 5 quarts of water to 1 50 lb bag A-900 Waterproofing Basecoat and pour into the crack, completely filling the crack.
3. Allow to dry and then trowel Concrete Resurfacer A-600 over the filled crack, and embed a 6-inch wide piece of Flex Mesh A-1600 into A-600 Concrete Resurfacer and feather the edges. A-7300 crack patch gel and Skidtex is another method for crack repair.
4. Please read A-7300 Specification Sheet.
5. Saw cuts may be necessary through the concrete substrate to create new expansions joints. Americrete does not guarantee that the cracks will not appear at a later date.

OPTION TO CRACK REPAIR:

• A design can be incorporated into the concrete substrate by using a crack chaser to cut into the crack and then into the concrete to create a flagstone effect. This would mean that the crack would move freely in the area that was cut. Paintable caulking can also be installed into these areas.

Installation Procedure (Part 1)

1. V-grind out all cracks. Sweep and vacuum out all dust out of cracks. Pressure wash the surface to remove all dust and debris.
2. Allow the surface to dry free of puddles, it should be damp but not shiny.
3. Now roll out a primer coat of A-300 Concrete Bonder Admix, using a medium nap roller cover. The coverage rate is about 300-350 square feet per gallon.
4. The dry time is 15-30 minutes at 72 degrees and 50 % humidity.
5. Mix 5 to 6 quarts of water per 50 lb bag and apply the A-600 or A-601 White Resurfacer at a rate of about 200 square feet per batch. Slurry coat should fill minor voids and holes.
6. Do not try and get a build of cement, just a tight screed.
7. Use a pump-up type sprayer to do this. Allow the troweled surface to dry 3-4 hours at 72 degrees and 50% humidity and lightly scrape off any trowel ridges or points.

Installation Procedure (Part 2)

1. Add 5 quarts of water to one 50 lb bag of the A-800 and mix in a 5-gallon bucket. Apply the A-800 Texture Finish Cement with a hopper gun at a rate of 150 to 175 square feet per 50 lb. batch.
2. Set the air compressor PSI to about 100-150 and turn down the side adjuster on the hopper gun so the A- 800 Cement sputters out of the hopper gun about 15 inches. If the air is set too high, then the cement will shoot out too fine. Move your hopper gun in a circular motion to get an even spread of the cement.
3. Allow the A-800 “splatters” to slightly set up (do not allow to dry), and knock-down with a trowel. To Knock- down means to slightly push down and spread out each splatter. Trowel out the splatters using an alternating figure 8 pattern so as to avoid having just a wave type pattern across the field of your work. Have a wet rag handy to wipe clean your trowel after every 4th or 5th swipe of your trowel.
4. If your trowel keeps getting too goopy, then you have not let the cement set up enough. Wear golf shoes or spikes when you walk out onto the wet cement to do your knock-down. Allow it to dry. Clean and cut all joints for a neat finish look. Lightly scrape the entire surface, being careful not to gouge the still curing cement. Lightly sweep and blow off all dust and debris.
5. Apply 2 coats of A-1100 Color Seal or A-1150 Cool Pool Color Seal. On hot days (80 degrees ) add 8 ounces of water per gallon to help avoid lap marks.No primer is needed for a full skim coat and knock-down.
6. The coverage rate is 250 square feet per gallon. For Enhanced adhesion use A-6000 Waterbase Epoxy Primer (tinted the same color as the topcoat). See A-1100/A- 1150 and A-6000 Specification Sheet.