Moulliet Residence

 Weathered, Discolored Backyard Concrete Patio Before Cleaning And Installing Decorative Concrete Overlay 
 Weathered, Discolored Backyard Concrete Patio Being Shot-Blasted Before Installing Decorative Concrete Overlay

This is an old, backyard concrete patio darkened significantly over time by organic debris from a large, overhead tree canopy.  The light-colored area in the middle of the patio is where a large rectangular glass table sat for an extended period of time.

 Shot-Blasted Backyard Concrete Patio Before Installing Decorative Concrete Overlay
 Backyard Concrete Patio After Shot-Blasting And Grinding Before Installing Decorative Concrete Overlay

Pressure washing alone is not sufficient to clean outdoor concrete that has been exposed to weathering for such a long period of time.  So, first, we shot-blasted the patio concrete (above left), and then ground it smooth (above right), so that we could resurface it with a thin cement overlay.

 Surface Preparation of Backyard Concrete Patio Including Crack Repair Before Installing Decorative Concrete Overlay
 Surface Preparation of Backyard Concrete Patio Including Crack Repair Before Resurfacing With Decorative Concrete Overlay

There were numerous, large settlement cracks throughout the slab (above left and right).  We filled and repaired these cracks with a semi-rigid epoxy, and then ground them flush with the existing surface, so that the cracks would not reflect through to the surface of the new cement overlay.

 Saw-Cutting Of Design On Backyard Concrete Patio With Decorative Cement Overlay
 Saw-Cutting Of Design On Backyard Concrete Patio With Decorative Cement Overlay

With the surface prep now done, we troweled down a thin, charcoal gray base coat of cement, and then saw-cut the resurfaced concrete patio to add a decorative border and divide the existing, large rectangular concrete slab segments into smaller, equally-sized square tiles (photos above and below).

 Backyard Concrete Patio Resurfaced With Saw-Cut Pattern Prior To Spray-Texture Decorative Cement Overlay
 Backyard Concrete Patio Resurfaced And Saw-Cut Prior To Spray-Texture Decorative Cement Overlay

We then sprayed two "texture coats" of the charcoal gray, integrally-colored cement (below left and right) to provide a uniform color to the surface, and give the final patio a "sandpaper finish" that would ensure adequate slip resistance.

 Decorative, Spray Texture Overlay Of Backyard Concrete Patio Before Clear Sealer
 Decorative, Spray Texture, Charcoal Gray Overlay of Backyard Concrete Patio Resurfaced Before Clear Sealer

Lastly, we sealed the patio (below left and right) with three coats of a high durability, clear polyurea sealer that would darken the final charcoal gray color, protect the concrete and not have to be re-sealed every couple years.

 Charcoal Gray Spray-Texture Cement Overlay Of Backyard Concrete Patio With Clear Polyurea Sealer
 Charcoal Gray Spray-Texture Cement Overlay Of Backyard Concrete Patio With Saw-Cut Design And Clear Polyurea Sealer