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HMK S234 Extra Stain Protection Stone Sealer
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At a Glance
Quick Decision Guide
Container Size
1/4 Liter
Coverage
25-35 sq ft
Sealer Type
Solvent-Based Impregnator
Protection
Water, Dirt, Oil & Grease
Surface Finish
Little to No Enhancement
Vapor Permeable
Yes
Application
Interior & Exterior
Food Safe
Food Hygiene Compliant
Why Choose This Product
Key Benefits
Extra Stain Protection
Reduces water, dirt, oil, and grease penetration into stone surfaces
Natural Appearance
Provides little to no enhancement of the original color or finish
Vapor Permeability
Allows moisture vapor to continue moving through treated stone
Broad Stone Compatibility
Protects natural stone, artificial stone, agglomerates, and terrazzo
All-Finish Application
Suitable for textured, honed, and polished stone surfaces
Versatile Protection
Suitable for interior, exterior, and food hygiene compliant applications
Product Information
Product Details
Specifications
Brand
HMK®
Part Number
S234
Product Type
Penetrating Stone Sealer
Container Size
1/4 Liter
Coverage
25-35 sq ft
Formula Type
Solvent-Based
Sealer Type
Impregnator
Protection
Water, Dirt, Oil & Grease
Suitable Materials
Natural Stone, Artificial Stone, Agglomerates & Terrazzo
Surface Compatibility
Polished, Honed & Textured Finishes
Surface Enhancement
Little to No Enhancement
Vapor Permeable
Yes
Application
Interior & Exterior
Food Hygiene Compliant
Yes
About This Product
Extra Stain Protection Stone Sealer
HMK® S234 is a solvent-based penetrating stone sealer that reduces the penetration of water, dirt, oil, and grease. Its enhanced oil and grease protection helps preserve natural and artificial stone surfaces exposed to spills, moisture, and everyday contamination.
Penetrating Sealer That Preserves Natural Appearance
HMK S234 penetrates the material rather than creating a visible topical coating. Treated surfaces remain vapor permeable and receive little to no aesthetic enhancement, allowing the natural color and finish of the stone to remain largely unchanged.
Impregnator for Interior and Exterior Stone
This silicone impregnator is compatible with natural stone, artificial stone, agglomerates, and terrazzo across all finishes, including polished surfaces. Its interior and exterior performance, broad stone compatibility, and food hygiene compliance make it a versatile choice for protecting finished stone installations.
Common Questions
Frequently Asked Questions
What does HMK S234 Stone Sealer protect against?
HMK® S234 reduces the penetration of water, dirt, oil, and grease into natural and artificial stone surfaces. It provides extra protection against oil and grease for installations where spills and everyday contamination can enter porous materials, while allowing the treated surface to remain vapor permeable.
What materials can HMK S234 be used on?
HMK S234 is formulated for natural stone, artificial stone, agglomerates, and terrazzo across all surface finishes. It can be used indoors or outdoors. Because absorption varies by material, test an inconspicuous area to confirm suitability, appearance, and coverage before sealing the complete installation.
Can HMK S234 be used on polished stone?
Yes. HMK S234 is suitable for all stone finishes, including polished surfaces. The impregnator penetrates the material while producing little to no aesthetic enhancement. Any excess product must be removed before it dries to prevent unwanted residue, smears, or surface imperfections.
Will HMK S234 change the appearance or breathability of stone?
Treated surfaces remain vapor permeable and receive little to no aesthetic enhancement. HMK S234 is intended to maintain the stone’s natural appearance instead of deliberately deepening its color or creating a visible topical film. Testing is recommended because different stones can respond differently.
Is HMK S234 a water-based impregnator?
No. HMK S234 is a solvent-based silicone impregnator rather than a water-based impregnator. The product is flammable and requires adequate ventilation during application. Keep it away from heat, sparks, flames, rubber, plastics, lacquered surfaces, varnished materials, and other solvent-sensitive items.
How should the surface be prepared and sealed with HMK S234?
Clean the surface with diluted HMK R155, flood rinse, and allow at least 24 hours of drying until residual moisture is 2 to 4 percent. Apply S234 evenly to the clean, dry surface, usually in two wet-on-wet coats, and remove excess before it dries. Oil and water resistance develops over 48 hours.
Can HMK S234 be used indoors, outdoors, and in food areas?
Yes. HMK S234 is suitable for interior and exterior use and is food hygiene compliant once dry. Remove foodstuffs before beginning treatment, allow 2 to 4 hours before foot traffic, and protect the treated surface from rain and humidity for at least 12 hours.
How much area does HMK S234 cover?
Coverage depends on the surface finish and porosity. A 0.25-liter container covers 25 to 35 square feet, 1 liter covers 75 to 150 square feet, 5 liters covers 375 to 750 square feet, and 10 liters covers 750 to 1,500 square feet.