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MB-18 Ultra 5 Polishing Powder


Availability: In Stock  |  SKU: MB-18(5X)-1



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If you are unsure which powder you need or it's application process, check this out!

MB-18 Ultra 5 Polishing Powder - FOR PROFESSIONAL USE ONLY

Ultra 5 is a fine grained Italian crafted powder that exceeds the industry standard, is easy to use and produces a superior finish. This is not your father’s 5X, but one of the best powders on the market. It polishes quickly to a deep gloss all calcite-based stones, like Marble, Travertine, Onyx, Limestone, etc. Ultra 5 will not stain grout lines.

The following are AVERAGE directions. Different stones may require different techniques. If you are in doubt, don’t hesitate to call us.


  • Prepare the surface to be polished by honing it to the highest clarity possible.
  • Protect surfaces that could be damaged by splatters with proper masking material.

FLOORS: Target an area of approximately 10 – 15 sq. ft. In the middle of the target area, sprinkle approximately 1 ½ - 2 oz. (3 – 4 tablespoons) of Ultra 5 powder in a circular pattern slightly smaller than the diameter of the floor machine. Using a hog’s hair pad (highly recommended), position the floor machine with a full tank of water on top of the powder. For best results, use 1.5 HP minimum and do not exceed 175 RPM. Release some water and swiftly swing the machine back and forth over the targeted area to evenly spread the slurry. (Note: keep the slurry thick; not too wet) Polish slowly with a spiral motion moving from one end of the targeted area to the other and back. Continue polishing for 2.5 – 4 minutes. Then check the surface with a squeegee. You should have a high polish at this point. Next release just enough fresh water onto your target area to make vacuuming the used slurry easy and vacuum to remove. Then clean with a neutral cleaner such as MB-1 Floor Amore or MB-15 StoneGlow. Now repeat this process on next section.

COUNTEROPS: Target an area approximately 3 – 4 sq. ft. On the targeted surface, sprinkle 1/2 teaspoon of the Ultra 5 powder on the surface to be polished in a circular pattern slightly smaller than the polishing pad you are using. Spray some water on the powder and over the rest of the targeted area. Set the speed of the right-angle grinder/polisher (variable speed is a MUST) to the slowest speed. Using a hog’s hair pad, move the machine over the targeted area slowly, applying steady pressure. Check the surface for results after approximately 2 - 3 minutes. If you have a high polish, semi-flush the section and pull the slurry down to next section and repeat.

COVERAGE: Depending on the type of stone, expect coverage of approximately 125 – 200 sq. ft. per pound.

 SDS Available Here

Want to Know More About Our 5x Polishing Powder? Read These FAQs

Have you been looking for a high-quality travertine polishing powder that is easy to use and gives great results? MB-18 Ultra 5 Polishing Powder is just what you need.

This incredible polish is designed for natural stone floors and countertops. It's the perfect product to help you give natural stones, such as limestone, marble, onyx, etc., that final touch. At MB Stone Pro, we place great emphasis on providing pre- and post-sales support. To that end, we have drawn up a Q&A section below to ensure that you are equipped with the information you need.

Before applying 5x marble polishing powder to give your surface that final polish, make sure the surface is clean. You can use a deep clean gel or abrasives if needed and mask the area before polishing. If you require assistance, please do not hesitate to get in touch with us.

This polishing powder produces a high-gloss, polished finish.

You can use this product as needed to produce a glossy sheen.

This is a polish. It is not intended to treat scratches. You will need a set of our diamond abrasives to get rid of imperfections before applying this product. Please get in touch with us for more information.

It's important to test any new product in an inconspicuous area first. We advise following the directions on the label and consulting the safety data sheet for safety-related information. Make sure you're wearing the recommended personal protective equipment when working with this product.

No. Stain Reaper, MB-2 Alkaline HD Heavy Duty Cleaner, and other products can be used to remove stains. Contact our qualified professionals if you're unsure of which stain remover to use.

Here is a link to one of our blog posts about stain removal: You can find others on our website, and we have a training program specifically designed to equip stone care professionals with the information they need.

At MB Stone Pro, we are committed to providing pre-sales support. If you have more questions, please do not hesitate to get in touch with us, and we will gladly address your concerns. You can call us at (888) 509-5831 to talk to one of our stone care experts or simply fill out the contact form, and we'll get back to you.

Weight 1.0 lb2.0 lb9.0 lb26.0 lb


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