1. Rafco Products Acid Staining

2. Rafco Products Acid Staining JadeTurquoiseCoffeeCarmel MahoganyEbonyMission Brown Amber Reactive stains Natural colors Permanent UV stable Variegated color

3. Rafco Products Acid Staining How it works As concrete cures it produces calcium hydroxide (free lime) Metallic particles suspended in a hydrochloric solution react with the calcium hydroxide to produce an oxide color on contact Considerations Concrete must be fully cure Must neutralize Surface should be sealed Jade & Turquoise may not be used exterior Color will be variegated and uneven

4. Rafco Products Acid Staining Preparation Slab should be fully cured recommend 28 days Slab should not have sealer or curing compounds used Floor should be thoroughly cleaned or sanded lightly MVER should be considered for interior floors A calcium chloride test may be used or a relative humidity test Plastic masking should be used to protect walls and other areas Saw cuts may also be as separations Samples should always be made in advance

5. Rafco Products Acid Staining Application Tools should include Sprayers Stiff acid brushes Assorted chip brushes Plastic containers Water Sponges TSP or baking soda Shop-vac w/ squeegee Safety equipment Rubber gloves

6. Rafco Products Acid Staining Application after masking the area is sanded lightly an overlay or a dry surface may be pre-wetted to prevent spotting

7. Rafco Products Acid Staining Application after pre-wetting the slab the acid stain may be applied with a sprayer and brushed with a stiff acid brush

8. Rafco Products Acid Staining Application continue to agitate the material dispersing evenly over the entire area

9. Rafco Products Acid Staining Application after application allow the stain to react until color has developed This time will vary from 2 – 4 hours depending on the surface applied to

10. Rafco Products Acid Staining Application After the proper burn time the area must be rinsed and neutralized with TSP This must be done before the floor can be sealed, allow 24 – 48 hours of drying time before applying sealer