QUIKRETE Zip & Mix Repair Mortar is a multi-purpose concrete repair material that can be mixed and used right out of its innovative resealable pouch. Zip & Mix repair mortar is formulated with special polymer resins that allow the material to be molded and shaped to match the contour of the surrounding concrete without sagging.
Repair mortar is ideal for repairing broken edges and corners on concrete steps and curbs, walkways, slabs and concrete and masonry walls, and it can even be used for overhead applications, without forms. The first step in achieving a successful concrete repair is proper surface preparation. A solid, clean surface is necessary so that the repair material can permanently bond to the damaged area.
It is extremely important to remove any unsound or flaking concrete from the repair area. This can be done using a hammer and chisel or with a masonry grinding disc and a portable drill. When working with cement-based products, always wear eye protection and waterproof gloves.
Once the unsound concrete is removed, the surface should be cleaned of any loose material, dirt, oil and grease, prior to the application of the repair mortar. using QUIKRETE Concrete and Asphalt Cleaner, scrub and clean the surface of the repair area with a stiff bristle brush. Concrete and asphalt cleaner is a concentrated detergent that is effective and safe for use on any concrete, asphalt, masonry and stone surface.
Thoroughly rinse the repair area after cleaning. To mix Zip & Mix repair mortar, unzip the resealable closure and break the protective seal. Then, add one and a quarter cups of clean water. Squeeze the pouch to remove any access air, and then zip the pouch closed and knead the bag for about three minutes, until a lump-free consistency is achieved.
Then, unzip the pouch and repair mortar is ready to use. QUIKRETE Zip & Mix repair mortar is a rapid setting material and sets in about 10 minutes, so you will need to work quickly. It is important not to add more water after the material has begun to set. This will weaken the mix and can cause shrinkage cracking. Repair mortar should be built up in layers using the application trowel.
The first layer should be pressed into the repair area using firm trowel pressure. Continue to build and sculpt the repair mortar so that the surface of the repair is above the surrounding concrete. In about 10 minutes, when the patches become thumbprint hard, use the edge of the application trowel to mold and shape the repair to match the contour of the surrounding concrete.
No special curing is required, under normal conditions. In temperatures over 90 degrees, keep the patch damp for 24 to 48 hours with a fine water mist.
When working with cement based products always wear eye protection and waterproof gloves.
Remove any unsound or flaking concrete from the repair area using a hammer and chisel or with a masonry grinding disk and a portable drill.
Remove any loose material, oil and grease then clean the surface with QUIKRETE Concrete and Asphalt Cleaner.
Thoroughly rinse the repair area after cleaning.
Unzip the re-sealable closure and break the protective seal. Add 1 1/4 cups of clean water.
Squeeze the pouch to remove the excess air and then zip the pouch closed and knead the bag for about 3 minutes – until a lump free consistency is achieved.
Dampen the repair area with water.
Build up the repair mortar in layers using the application trowel. The first layer should be pressed into the repair area using firm trowel pressure.
Continue to build and sculpt the repair mortar so that the surface of the repair is above the surrounding concrete.
Mold and shape the repair mortar to match the contour of the surrounding concrete using the application trowel once the patch has become thumb-print hard.
- QUIKRETE® Zip & Mix – FastSet™ Repair Mortar (comes with trowel)
- QUIKRETE® Concrete and Asphalt Cleaner
- Hammer and chisel
Masonry grinding disk and portable drill
- Bristle brush
- Waterproof gloves
- Safety glasses