HMK S244 Color Enhancer Extra Stone Impregnator

HMK S244 is a penetrating color enhancer that enriches the stone's natural color and structure without forming a topical coating. It also reduces the penetration of water, dirt, oil, and grease, which lowers susceptibility to staining and makes subsequent cleaning considerably easier.

HMK S244 is suitable for natural stone, artificial stone, reconstituted stone, and terrazzo in interior or exterior settings. Because these materials can differ considerably in permeability, HMK recommends testing an inconspicuous area to confirm the resulting appearance, absorption, coverage, and performance before treating the full surface.

No. HMK states that S244 does not yellow with age, helping the enhanced appearance remain consistent over time. The stone also remains breathable because the treatment only slightly impairs vapor permeability rather than sealing the material with an impermeable topical layer.

The result depends on how much product the surface absorbs. Greater absorption produces stronger water, oil, and grease repellency and more noticeable color enhancement. Dense or less permeable materials may show a different result, which is why HMK recommends completing a test area before full treatment.

No. On polished acid-sensitive stone, S244 can dramatically reduce the dulling effect caused by acidic substances such as cola, wine, and fruit juice, but it cannot eliminate etching. The manufacturer does not claim complete protection from contact with acidic products.

No. HMK S244 is a ready-to-use, solvent-based impregnator rather than a water-based impregnator sealant. It contains a turpentine substitute and is flammable, so adequate ventilation is required and the product must be kept away from heat, sparks, and flames during use.

The surface should be clean, cool, dry, and free of previous treatment residue. HMK recommends cleaning with diluted R155 Intensive Cleaner, flood rinsing, and allowing at least 24 hours to dry to 2 to 4 percent residual moisture. Apply evenly and remove excess before it dries to prevent dark marks or streaks.

Coverage varies widely because S244 must be absorbed into the material to provide its repelling and color-enhancing effects. Porous surfaces generally require more product than dense surfaces. HMK recommends testing a representative area to evaluate absorption and determine realistic coverage before purchasing for the full project.