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Acid Staining

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Acid Staining

Jade

Turquoise

Coffee

Carmel

Mahogany

Ebony

Mission

Brown

Amber

• Reactive stains• Natural colors• Permanent• UV stable• Variegated color

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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

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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

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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

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Acid Staining

Application

• after masking the area is sanded lightly• an overlay or a dry surface may be pre-wetted to prevent spotting

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Acid Staining

Application

after pre-wetting the slab the acid stain may be applied with a sprayer and

brushed with a stiff acid brush

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Acid Staining

Application

continue to agitate the material dispersing evenly

over the entire area

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Acid Staining

Application

after application allow thestain to react until color

has developed

This time will vary from2 – 4 hours depending

on the surface applied to

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Acid Staining

Application

After the proper burn timethe area must be rinsed

and neutralized with TSP

This must be done beforethe floor can be sealed,allow 24 – 48 hours of

drying time before applying sealer