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Dense Stone Impregnating Sealer

Formerly Stain-Proof™ Plus

STAIN-PROOF® Dense Stone Impregnating Sealer, formerly known as STAIN-PROOF Plus™, is an impregnating, invisible and breathable sealer that protects natural stone countertops from damage caused by water, salts and oil-based stains. Treated countertop surfaces become easier to clean, maintain, and keep looking good for longer. Dense Stone Impregnating Sealer provides lasting protection for natural stone that comes with a 25 year performance warranty*.

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Typical Applications

Dense Stone Impregnating Sealer is suitable for natural stone and concrete countertops.


  • Permanent premium oil and water repellence. 25-year written performance warranty when applied by a STAIN-PROOF Accredited Applicator.
  • Three different custom sealing molecules for 3 levels of penetration and maximum stain repellence
  • Includes a super penetrator for deep penetration of dense granites and marbles.
  • Retains natural surface color and finish
  • Super breathable: water vapor escapes freely preventing harmful moisture build-up inside the treated material
  • Suitable for indoor, outdoor, residential and commercial use.

25-year warranty


*A 25-YEAR PERFORMANCE WARRANTY is offered when product applied by an Accredited Applicator following our written instructions and surface is maintained regularly using our written maintenance system, as outlined in our warranty document. Spills should still be cleaned up immediately to minimise absorption.

Active Contents

Over 60% active contents in alcohol.

VOC Content

VOC compliant in containers having capacities of one Liter or less.

Pack Size

16 fl. oz. (1 pint / 473mL)

How To Use

  1. ALWAYS TEST PRODUCT ON A SMALL AREA FIRST and allow a 24-hour cure time to determine the ease of application and desired results.

  2. Ensure surfaces to be treated are dry, clean and free of residues.
  3. DO NOT thin product.
  4. Generously apply STAIN-PROOF™ Dense Stone Impregnating Sealer using a low-pressure hand sprayer, a clean brush or lamb’s wool applicator. Surface should have a mirror like ‘wet’ look for 3-5 seconds. Avoid contact with surrounding areas. 
  5. Wait for approximately 10 minutes but before the surface dries, repeat Step 4. Total application rate is approximately one pint for up to 75 sq.ft. (half liter per 7 square meters), depending on surface absorption. View our coverage chart for additional details.
  6. After the final coat, wait approximately 10 minutes but, before the surface dries, polish with a clean dry white cloth to remove excess product, moistening cloth with STAIN-PROOF™ Dense Stone Impregnating Sealer to ease polishing. 
  7. Use an organic solvent e.g. methylated spirits to clean equipment. 
  8. Avoid moisture contact with the surface for six hours after application. Surface may be used after 24 hours with full cure up to 4 weeks.

Note: Sealer will NOT prevent surface etching, scuff marks or wear and may lighten or darken some surfaces. Dense Stone Impregnating Sealer will make the maintenance and cleaning of treated surfaces much easier.

Additional instructions: Mosaic dense natural stone tiles in a wet area should be 6-sided sealed or dip sealed for 20-30 seconds, wiped off after 10 minutes and left 24 hours before adhering to floor with a premium polymer thin set such as Ardex X 77™, Ardex X 78™ or equal.


  1. Do not take internally.
  2. Apply when surface temperature is between 5 - 35°C (40 - 95°F).
  3. Avoid moisture contact with the surface for six hours after application. Surface may be used after 24 hours with full cure up to 4 weeks.
  4. Protect surrounding areas from over-spray.
  5. Keep away from drains, plants, water and soil. Do not empty into drains.
  6. Use only in well ventilated areas. Use a positive pressure respirator if ventilation is inadequate.
  7. Wear suitable solvent resistant gloves, protective clothing, safety goggles and an organic vapor respirator during application.
  8. Wash hands thoroughly after applying.


Keep container tightly sealed in a cool, well ventilated place. It is recommended that this product is best used within seven days of opening to avoid possible spoilage.



Safety Directions

  • Vapor is harmful to health with prolonged exposure.
  • Keep away from sources of ignition.
  • No smoking. May form explosive peroxides.
  • Irritating to eyes: avoid contact with eyes and skin.
  • Do not breathe gas/fumes/vapor/spray.
  • Avoid exposure - obtain special instructions before use. This material and its container must be disposed of as hazardous waste. Harmful if swallowed. HARMFUL- May cause lung damage if swallowed. Vapors may cause drowsiness and dizziness.

First Aid

If swallowed, contact a physician. DO NOT induce vomiting. If skin contact occurs remove contaminated clothing and wash skin thoroughly. If irritation persists, contact a physician. If in eyes, hold open, flood with water for at least 15 minutes and contact a physician. If breathed vapours or mist relocate to fresh air. If symptoms persist contact a physician.


Fire – Use foam, water spray, CO2 and dry powder.

Spillage – Take up mechanically or with absorbent material such as sand or saw dust.

Dense Stone Impregnating Sealer Downloads

Brochure and Specsheet


Dense Stone Impregnating Sealer Specification Sheet

Dense Stone Impregnating Sealer Overview

Product Uses And Porosity Chart

General Surface Maintenance Guide

STAIN-PROOF has produced a comprehensive, easy-to-read guide to maintaining your sealed (or unsealed) porous surface, including stone surfaces. 

STAIN-PROOF Surface Maintenance Guide is divided into clear sections for easy use - indoor and out door surfaces, horizontal and vertical surfaces, heavy duty cleaning, light regular cleaning, stain removal and tackling special problems such as salt efflorescence and grout haze.

Download our Surface Maintenance Guide

Countertop Care Sheet

Safety Data Sheets

Dense Stone Impregnating Sealer SDS (UK)

Dense Stone Impregnating Sealer SDS (FRANCE)

Dense Stone Impregnating Sealer SDS (ITALY)

Dense Stone Impregnating Sealer SDS (SPANISH)

Dense Stone Impregnating Sealer SDS (GERMANY)

Dense Stone Impregnating Sealer SDS (AUSTRALIA)

Dense Stone Impregnating Sealer SDS (CHINA)

Dense Stone Impregnating Sealer SDS (USA)

Dense Stone Impregnating Sealer SDS (USA SPANISH)

Dense Stone Impregnating Sealer SDS (CAN)

Dense Stone Impregnating Sealer SDS (CAN FRA)

Dense Stone Impregnating Sealer SDS (BEL DUTCH)

Dense Stone Impregnating Sealer SDS (NZ)

Specification Clauses

Construction Specifications Institute format

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