Paint Type
Milk Paint
Thinking about milk paint? Start here to compare porous surfaces and see when a bonding additive or protective finish matters.
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Milk paint overview
Traditional-style milk paint is usually sold as a powder mixed with water. It bonds especially well to raw, porous materials and creates a matte, often varied finish; previously coated or nonporous surfaces may need a bonding additive, primer, or another preparation specified by the manufacturer.
Milk paint compatibility
Milk paint performs most predictably on clean, unfinished, porous surfaces. Test previously finished material and follow the selected system's directions for bonding and topcoating.
| Surface | Compatibility | Preparation | Primer or bonding | Finish | Guide |
|---|---|---|---|---|---|
| Wood | Excellent on raw, unfinished wood | Remove dust, wax, grease, and incompatible finish; smooth rough areas as needed. | Usually unnecessary on porous raw wood; use the approved bonding additive or primer over a previous finish when needed. | Wax, oil, or another compatible topcoat can improve resistance to handling, moisture, and weather. | — |
| Plywood | Good when the face is sound, raw, and porous | Use dry plywood; remove contamination and smooth loose fibers, filled areas, and exposed edges. | Usually unnecessary on a porous unfinished face; test or use the approved bonding method over a factory or previous finish. | Protect exposed edges and surfaces according to handling and location. | — |
| Concrete | Good on cured, unsealed, porous concrete | Let new concrete cure, correct moisture problems, and remove dirt, deposits, grease, and loose material. | Usually unnecessary on sound porous concrete; sealed or previously coated concrete needs testing and product-specific bonding preparation. | Use a compatible protective finish when required by exposure or wear. | — |
| Brick | Good on sound, unsealed brick | Correct moisture problems and remove dirt, loose material, and efflorescence; let the brick dry fully. | Usually unnecessary on raw porous brick; sealed or coated brick requires testing and product-specific preparation. | Use a compatible protective finish for exterior exposure or frequent handling. | — |
| Plaster | Good on fully dry, porous plaster | Let new plaster cure and dry fully, then remove dust and loose material. | Usually unnecessary on raw porous plaster; previously painted plaster may need primer or a bonding additive. | Product-specific; add protection where the surface will face moisture or handling. | — |
| Drywall | Good with wall-specific preparation | Repair defects, let joint compound dry, sand smooth, and remove dust. | A compatible water-based primer may be needed for even absorption or over a previous finish. | Product-specific; protect walls according to the room and cleaning needs. | — |
| Stone | Good on suitable unsealed, porous stone | Identify the stone, resolve moisture issues, and remove contamination, deposits, and loose material. | Usually unnecessary on porous unsealed stone; test sealed or previously coated stone and use the approved bonding method. | Choose a compatible finish for moisture, weather, wear, and the desired appearance. | — |
Baseline reviewed August 2026 against current manufacturer guidance. Useful primary references include Real Milk Paint application guidance, Real Milk Paint surface guidance, and Real Milk Paint porous-surface guidance.