Watco Concrete Floor Paint

Surface preparation

• Bare Concrete – remove surface laitance, dust and any light dirt or grease deposits using Watco Etch & Clean. Watco Etch & Clean also etches smooth, bare concrete surfaces to provide a key. Flush with clean water and allow surface to dry. For the removal of heavier deposits of oil and grease we recommend Watco Concroff, again, flush with clean water and allow the surface to dry. 
• New Concrete – as a guide, new concrete should be left for four weeks to dry in the summer and six in the winter. The surface should then be prepared using Watco Etch & Clean and thoroughly rinsed away and left to dry prior to applying this coating. 
• Painted Surfaces – abrade to remove any weak or loose paint. Check remaining paint is well bonded. Very smooth, glossy paint should be lightly abraded to provide a key. Watco Bio D can be used to remove grease and oil from painted surfaces. Watco Concroff is a very powerful degreaser for contaminated bare concrete, (do not use on a previously painted surface since it can soften paint).

Priming

Is not usually required, but for very porous high suction surfaces, such as sand and cement screed, use Watco 4 Hour Epoxy Primer. Concrete should be sufficiently porous to allow the paint to penetrate, so very smooth or power floated concrete is unsuitable unless first primed with Watco Powerfloat Primer. 

Application

The paint should be thoroughly stirred and must not be thinned. Apply by roller and work well into the surface. Use a paint brush for edges. Avoid applying the paint too thickly. The second coat can be applied as soon as the first coat is dry (generally 16 hours), and should be applied within 5 days. If more than 5 days elapse, the first coat should be lightly abraded before the second coat is applied. Avoid washing the surface for 7 days.