1. Mix Xypex with clean water only (water that is free of salt and other deleterious materials).
  2. Mix clean water into the Xypex powder with a paddle on a slow speed electric drill (250 RPM) or with other equipment that ensures adequate mixing. For small jobs, Xypex may be mixed by gloved hand or by trowel.
  3. Be sure that the quantity mixed can be applied within 20 minutes. As the mixture thickens, stir frequently but do not add water.

Mixing for Slurry Coat

Mix Xypex powder with clean water to a creamy consistency in the following volume proportions:

For Brush Application
1.25 - 1.5 lb./sq. yd. (0.65 - 0.8 kg/m2)
5 parts powder to 2 parts water

2.0 lb./sq. yd. (1.0 kg/m2)
3 parts powder to 1 part water

For Spray Application
1.25 - 1.5 lb./sq. yd. (0.65 - 0.8 kg/m2)
5 parts powder to 3 parts water (ratio may vary with equipment type)

Mixing Dry-Pac 

  1. Apply Xypex with a semi-stiff nylon bristle brush, push broom (for large horizontal surfaces), or specialized spray equipment. Do not apply Xypex with a trowel, roller, paintbrush or paint sprayer. Contact your Xypex representative for further information. 
  2. The Xypex coating must be uniformly applied and should be just under 0.0625 inches (1.25 mm) thick. A thicker coating can cause curing difficulties, especially in warm weather. 
  3. When a second coat (Xypex Concentrate or Xypex Modified) is required, it should be applied after the first coat has reached an initial set but while it is still “green” (less than 48 hours). Light pre-watering between coats may be required due to drying. 
  4. For slab (horizontal) applications, care should be taken to spread the Xypex evenly, pulling a heavy broom over the fresh Xypex. This should be done in long strips and will serve to eliminate settlement of the Xypex in low spots on the slab and also to remove excess material which may have been applied. 
  5. In hot weather it is advisable to apply Xypex either early in the morning or late in the day. This will prevent the Xypex coating from drying out too quickly. 

    NOTE: Where a smooth, steel-trowelled finish is required for horizontal slab or where slab will be exposed to traffic (e.g. parking deck), apply Xypex Concentrate DS-1 or DS-2 by dry shake method. Consult Xypex Technical Data or your Xypex representative for further information.