HMK® R170 Exterior Stone Cleaner

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SKU: HMK-R170 Categories: ,


ALKALINE BASE – For Professional Use Only


A strong Alkaline base cleaner for all rough and honed stone/ masonry surfaces both interior and exterior use. HMK® R170 thoroughly removes decade-old dirt. Do not use on polished surfaces. Avoid contact with metal; alkali/fumes will cause etching.


Protect all adjacent non-masonry surfaces. Do a manageable area at a time. Thoroughly wet area to be cleaned. Apply R170 full strength or diluted 1:2 – 1:5 with water depending on situation. Immediately scrub with stiff bristle brush or white/tan polyester pad, quickly rinsing with water until solution is completely removed. First rinse should be a flood rinse. Second rinse should be a neutralizing rinse using a solution of HMK® R55 Intensive Cleaner/Grout Film Remover and water.


200 sqft., 18 square meters at full strength, 500 sqft., 46.5 square meters per 1 liter (34 oz.) container diluted.


Chemical product. Contains Sodium Hydroxide. Corrosive. Avoid eye/skin contact. If exposed, wash/flush with water, and get medical attention. Follow appropriate safety precautions when dealing with corrosives. Wear protective gear (gloves, masks, boots, etc.) at all times. Keep out of reach of children. See Material Safety Data Sheet.


1 liter cans (34 oz.) 12 per case, 5 liter cans (5.68 qts.) 4 per case.


Store in cool place. Keep lid tightly closed.


Always test procedure first in an inconspicuous area to determine dilution rate, performance, visual appearance, and acting time so as not to harm the stone.


Limitation of liability: The liability of HMK® for defective products and any claims for damages whatsoever is limited to the purchase price of the products. HMK® shall not be liable for any consequential damages. No other warranty or representation is made or implied.

Additional information

Weight 3 lbs
Dimensions 8 × 4 × 6 in