This story shows how to pour and color a cement overlay.
Before pouring a self-leveling compound, prepare the subfloor according to the manufacturer's directions so you'll achieve a sound bond between old and new.
For concrete remove loose pieces and sweep away dirt and debris. Repair large cracks. If the overlay manufacturer recommends it, clean the concrete and apply a bonding agent or primer for improved adhesion of the bonding layer.
A wood subfloor should be stable with plywood sheets or boards securely nailed so there's no give. These instructions are for pouring an overlay over wood. Felt helps ensure a good bond.
About 2-1/2 hours for a 12x12-foot room to lay felt and pour compound; about 2 hours to trowel thin finish for the same-size room; about 3 hours to protect surfaces and apply acid stain
Staple gun, aviation snips, drill equipped with a mixing paddle, gauge rake, squeegee, putty knife, trowel, plastic-body sprayer, paint roller equipped with an extension handle
Using a staple gun and a gauge rake; troweling
#30 felt, metal lath, galvanized staples, self-leveling compound, colorant, concrete thin finish, painter's tape, masking paper, acid stain, ammonia, clear sealer
Install the metal lath so it runs perpendicular to the felt paper and overlap by 2 inches. (Cut metal lath to fit using aviation snips.) Use a hammer so lath lays flat. Secure lath so it lays tight against the subfloor, driving in 1-1/2-inch galvanized staples every 2 inches with the pneumatic stapler.
Following the manufacturer's directions add colorant to 6-1/2 quarts water in a 5-gallon bucket. (Select a hue that provides a compatible base coat for the stain.) Wear a dust mask and use the drill and mixing paddle to blend in a 55-pound bag of thin finish. This mixture will be thinner than the self-leveling compound. Dampen the floor with water using a plastic-body sprayer. Use a squeegee to spread the thin finish. Let dry.