DIY Network

Concrete Flooring From "Weekend Landscaping" episode WKL-201

This patio, shown at right, is part of the outdoor area for a mid-century modern home. A key element of mid-century design was "form follows function," characterized by cantilevered roofs, glass walls and clean, simple design without a lot of ornamentation. In keeping with the architectural design of the house, the updated patio floor design will be clean and simple.

Over time, cracks have formed in the concrete. Replacing the floor would be expensive, but by choosing to stain the concrete, a stonelike impression can be created that incorporates the cracks. Three to four monochromatic colors of paint are used to balance the design and create a variegated carpet effect.

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	Figure A
	Figure B
	Figure C
	Figure D

Preparation is key to successful staining. Water-based stains are penetrating stain and sealer all in one: they must be absorbed into the porous surface of the concrete rather than sitting on top of the surface. Since concrete strength and porosity will affect the final look and color of the stain, the concrete must be free of all dirt, oil, sealers and debris in order for the stain to adhere properly. Sandblasting is an excellent way to create the properly prepared surface. It should be done the day before staining to allow the surface to dry. Before cleaning is also an excellent time to test stains for color and adherence. Do this in small sections in an inconspicuous area of the patio.

When the deck is clean and dry take the following steps:

1. Remove all objects from concrete surface before staining.

2. Use low-tack painters tape and heavy rosin paper to tape and protect areas adjacent to the concrete to prevent accidental staining. When taping, leave a 6" border between floor and landing areas. This helps to create a carpet-like border for the stained areas.

3. Before starting to stain the floor, make sure to wear protective clothing, eye wear and a mask to avoid spatters and fumes.

4. Apply the first coat of stain lightly with a pump sprayer (figure A). Don't try to achieve a uniformly solid surface: the goal is a blended, mottled design (figure B) that uses the cracks as part of the design. The monochromatic colors used here are sandstone, terra-cotta, brown and black.

5. While the first color (sandstone) is still wet, apply a light random coating of terra-cotta stain. Don't forget that the color of the stain will intensify as it dries.

6. The next two colors are applied with a ragging effect (figure C), which helps create texture and an aged effect (figure D). Think of ragging as painting on a canvas: choose the color and make the design as you go along.

7. Allow 24 hours to dry. During this time be sure to keep children and pets away from the surface.