Prosoco 942 Limestone & Marble Cleaner

942 Limestone and Marble Cleaner is a ready-to-use, non-acidic alkaline cleaning gel. Designed for removing moderate to severe atmospheric staining, this low-odor gel cleaner is appropriate for use on exterior or interior masonry surfaces.

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Product Type

Low-Odor Alkaline Gel Cleaner for Polished and Unpolished Masonry

Product Description

942 Limestone & Marble Cleaner is a ready-to-use, non-acidic, low-odor cleaning gel for removing moderate to severe atmospheric staining from masonry surfaces. Designed for vertical and horizontal use on polished and unpolished limestone and marble, this gel-based formula clings to surfaces to simplify application and minimize runoff. It restores color and texture while protecting adjacent flooring and surfaces.

Key Benefits

  • Non-Acidic: Safe for limestone, marble, and other sensitive substrates.
  • No Etching: Thoroughly cleans without bleaching or damaging surface texture.
  • Low-Odor Gel: Provides easy vertical application and reduced spillage.
  • Safe for Interior or Exterior Use: Can be applied on horizontal and vertical surfaces.

Best For

  • Limestone
  • Marble
  • Polished Stone
  • Unpolished Stone
  • Interior or Exterior Stonework

Product Properties

Property Specification
Form Clear amber gel; slight ammonia odor
VOC Content Non-applicable
pH 8.3
Coverage Rate 75–200 sq ft/gal. See Product Data Sheet for specific variations per substrate.
Freeze Point 25° F (–4° C) ASTM D 1177
Flash Point >200° F (>93° C)
Total Solids Non-applicable
Wt/Gal 8.65 lbs
Available Sizes 5-gal
Shelf Life 2 years in tightly sealed, unopened container