While most concrete surfaces only need to be washed prior to coating, there are some cases where repairs may be necessary before proceeding.

If this applies to your particular surface, a little time spent now will make a big difference in the final appearance and long term performance of your newly finished porch, steps, patio, etc.

Cracked Concrete
1) Hairline cracks usually do not require patching and can be coated normally when the decorative finish is applied.
2) Minor cracks can be filled with Weather Shield Flex Elastomeric Compound or a generous brush-applied coat of Flex Damp Proof Rubber Membrane.
2) Larger cracks will need to be filled with a suitable crack repair mortar. If the slab is still moving, the crack may reappear later on.
The cracks and holes were patched in the staircase above and the repairs were then protected beneath a stone coating to make the whole surface look brand new.
If there are holes or cracks, now is the time to patch them up — and then make them disappear beneath your new stone finish.
Fix structural issues before you coat...
Contact us for clarification with any questions at info@techstone.ca or call 1-877-279-0694.
broom finished concrete
Heavily Pitted Concrete, Holes, etc.
Extensive surface pitting and unsightly large holes could transmit through your final finish. For ideal results, they should be skimmed smooth or filled with an adequate cement-based filler and allowed to cure fully before top-coating.
Broom finished concrete is not the most ideal surface for coating. The grooves should first be filled in with a thin coat of Weather Shield Flex for best contact and bond for any decorative coatings that follow. Roll or brush on Flex in the direction of the broom finish.