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MB-18 Ultra 5 Polishing Powder

$19.97

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

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Premium Stone Polishing Compound - MB-18 Ultra 5 (5X)

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.

Key Benefits of MB-18 Ultra 5

  • Highly Efficient: Ultra 5 is designed to work quickly, reducing the time and labor required for polishing.
  • Versatile : Suitable for a wide range of calcite-based stones such as marble, travertine, onyx, limestone and so on.
  • Streak-Free Finish: Ensures a deep, streak-free gloss finish, enhancing the natural beauty of the stone.
  • Non-Staining: Formulated to avoid staining grout lines, maintaining the integrity of your entire surface.

Why Professionals Choose Ultra 5

Effortless Deep-Gloss Finish

Ultra 5’s fine-grained Italian formula cuts polishing time while elevating clarity, leaving a mirror-like surface that clients instantly notice.

Works Across All Calcite-Based Stones

One powder, multiple surfaces—marble foyer today, onyx vanity tomorrow. No need to swap products on-site.

Grout-Safe, Streak-Free Formula

The slurry stays where it should, so installers don’t have to chase discoloration along grout lines or edges.

Proven Efficiency in the Field

At 125-200 ft² per pound, technicians finish large footage on a single bucket—maximizing margin on every job.

Choose Your Size

Size

Approx. Coverage*

1 lb Trial

125 – 200 ft²

2 lb Bag

250 – 400 ft²

8 lb Pail

1 000 – 1 600 ft²

25 lb Contractor Pail

3 125 – 5 000 ft²

*Coverage varies with stone density and machine pressure.

How to Use MB-18 Ultra 5 Stone Polishing Powder - FOR PROFESSIONAL USE ONLY

Directions for Use on 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.
  • Clean with a neutral cleaner such as MB-1 Floor Amore or MB-15 StoneGlow.
  • Now repeat this process in the next section.

Directions for Use on Countertops

  • 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.

Technical Details & Safety

Application Type

Wet mechanical polish – professional use only.

Compatible Surfaces

Marble • Travertine • Onyx • Limestone • Other calcite-based stones.

SDS & Compliance

Download the Safety Data Sheet for PPE recommendations before mixing slurry.

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

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