Sure Klean Limestone Restorer

Prosoco's Sure Klean Limestone Restorer is a concentrated acidic cleaner for unpolished limestone, marble, granite, sandstone, slate, concrete, and cast stone surfaces. It safely removes atmospheric dirt, mildew, and many other surface stains without the risk of bleaching or discoloration, and it’s safer and easier to use than conventional acidic or abrasive cleaning systems when used properly. Contains no hydrofluoric acid. Use in combination with pressure water rinsing.

Apply using a densely-filled masonry washing (tampico) brush, roller or low pressure (50 psi
max) spray. Do not apply with high pressure spray equipment. This drives the cleaner deep
into the surface, making complete rinse difficult. Discoloration may result.
Rinse with enough water and pressure to flush spent cleaner and dissolved soiling from the
masonry surface and surface pores without damage. Inadequate rinsing leaves residues which
may stain the cleaned surface. Masonry-washing equipment generating 400–1000
psi with a water flow rate of 6–8 gallons per minute is the best water/pressure combination for rinsing
porous masonry. Use a 15–45° fan spray tip. Heated water (150–180° F; 65–82° C) may improve cleaning
efficiency. Use adjustable equipment for reducing water flow-rates and rinsing pressure as needed for
sensitive surfaces. Rinsing pressures greater than 1000 psi and fan
spray tips smaller than 15° may permanently damage sensitive masonry. Water flow-rates less
than 6 gallons per minute may reduce cleaning productivity and contribute to uneven cleaning
results.