Polished Concrete Specifications

Specifications for New Concrete to be Polished

Preferred Mix Design Specs

3500 psi minimum
Pozzolans—No more than 15% cement replacement is recommended
Admixtures—in moderation, admixtures are ok for use with polished concrete. Superplasticizers will require removal with a stripper before attempting to grind and polish

Preferred Flatwork Finishing Specs

Preferred Floor Flatness (FF) of 50
Preferred Floor Levelness (FL) of 35
Alternative to FF/FL is the strike-off method:
- 0″–1/8″ is favorable
- 1/8″–1/4″ is wavy/unfavorable
Bull-floated, smooth, pan-finished floor from edge to edge, with no rough areas
Concrete Compressive Strength: 3,500psi to 5,000psi
Lightweight Concrete: Not allowed if aggregate exposure is required.
Concrete Curing: Minimum 8 days water cured or dissipating curing compound applied.
Laser screeding is good for ensuring flatness.

No trowel marks
Do not burn when power troweling
No indentions left on surface (ex: knee marks, shoe prints)

Keep in mind, concrete must cure for at least 28 days before polishing.

Recent Projects

Shot Blasted 495 bridge over Christina River in Wilmington, DE

The bridge over the Christina River in Wilmington is having some work done to it. In order for the contractor to be able to apply new concrete coatings to the Read more

Tile & Carpet Removal in Lynchburg VA

We were excited to be in Lynchburg, VA working at Sellers Verna R MD-Centra Health. Recently, we were called in mid-project to prepare this health facility for new flooring. Our Read more

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We traveled to Fredericksburg, VA to take on a project for a customer. We performed a shot blast and seal on a 220,000 sq ft surface. Check out the photos Read more

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We had the opportunity to help one of our clients, Collegium Charter School in Exton, PA, with their new gymnasium floor. We removed the tile from the 6,400 sq ft surface Read more