Many exterior slabs that are not overly damaged with salt can be ground down removing the weak cream layer, and treated with a permanent moisture control system. These slabs are much less susceptible to freeze thaw damage as they do not accept the water, as a result they typically dry quicker and have less ice build up issues. The moisture control system becomes part of the concrete. (not a sacrificial top layer that needs to be re-applied every year)
These slabs are left at a lower profile to give an acceptable slip coefficient (traction).
The costs associated with grinding are generally less then half of any overlay option, if it’s done before the damage is extensive.
In most cases unprotected exterior surfaces in our Canadian winter do not fair very well through the freeze thaw. Many become covered in ice making them dangerous to walk on. The water/ice gets deep into the concrete then freezes, expanding within the pores, leaving a rough unsightly surface. Usually salt is the icing on the cake, now you have rebar. When it gets down to this stage when the surface is very weak and anything ridged runs a high risk of delamination.
Rubber Stone is flexible and soft to walk on making it great for many different applications. The black portion of the overlay is recycled rubber and coloured portion is added to change the colour of the overlay. Usually the coloured rubber replaces the black in increments of 10% until the target colour is achieved. Multiple colours can be used. Ex 20% Brown 20% Red and 60% black.
Limited bookings available for 2015 season.
Cement based overlays are another option for resurfacing concrete that can be effective in certain applications, allowing you to add a new and refreshing finish that can include color or have subsequent topical color or stain added. Existing concrete must be structurally sound and not have any unusual cracking. In most cases overlays are sealed with multiple coats of acrylic sealer and should be resealed as needed every 2 -3 years.