What is polished concrete?
Polished concrete is produced by mechanically grinding and honing cured concrete with progressively finer diamond tooling. A penetrating densifier is applied during the process to harden and dustproof the surface before the floor is polished to the specified level of reflectivity.
What is the difference between polished concrete and grind-and-seal?
Polished concrete achieves its primary finish through progressive mechanical refinement and densification of the slab. Grind-and-seal prepares the concrete by grinding and then relies mainly on a clear topical sealer or coating for the finished appearance and protection.
What does aggregate exposure mean?
Aggregate exposure describes how deeply the floor is ground. A light grind may reveal mainly sand and fine particles. A salt-and-pepper finish reveals scattered small aggregate, while deeper grinding exposes more of the slab’s larger stone.
Does polished concrete have to be highly glossy?
No. The floor can be finished at lower, medium or higher levels of reflectivity. A lower polish creates a more restrained appearance, while continued refinement with finer tooling produces greater clarity and gloss.
Can existing concrete be polished?
Many existing slabs can be polished, but suitability depends on concrete strength, previous coatings, contamination, damage, flatness, repairs and the desired aggregate exposure. A test area can help determine how the floor will respond.
Will polishing remove cracks and repairs?
No. Cracks, joints, patches and previous repairs generally remain visible. Some defects can be repaired or filled before polishing, but variations between the repair and surrounding concrete usually remain part of the finished appearance.
Does polished concrete reduce dusting?
Yes. Mechanical refinement and a chemically reactive densifier can increase surface density and reduce dusting. Severely weak or deteriorated concrete must still be evaluated because polishing cannot restore every unsuitable slab.
Is polished concrete stain-proof?
No. Densifiers and protective guards can reduce permeability and provide more time to clean spills, but concrete can still stain or etch. Oils, acidic liquids and coloured materials should be removed promptly.
Is polished concrete slippery?
A clean polished floor can perform appropriately in many dry interiors, but water, grease, dust and other contaminants can increase slip risk. Wet or process environments may require a more textured flooring system.
Can polished concrete be coloured?
Concrete dyes or compatible colour treatments can be incorporated into selected polishing systems. Colour remains influenced by the concrete, aggregate exposure, porosity and surrounding lighting, so a mock-up is recommended.
How is polished concrete maintained?
Abrasive dirt should be removed regularly, followed by automatic scrubbing or mopping with a compatible neutral or mildly alkaline cleaner. Acidic cleaners should be avoided. Periodic burnishing and renewal of the protective guard may be recommended based on traffic and appearance.
Can polished concrete be used outdoors?
Highly polished concrete is generally more appropriate for controlled interiors. Exterior concrete exposed to rain, freeze-thaw conditions and weather may require a honed or textured finish with a compatible penetrating treatment rather than a high-gloss polish.
How long does concrete polishing take?
The schedule depends on floor size, concrete hardness, coating removal, repairs, aggregate exposure and the specified polishing level. Deeper grinding and higher reflectivity generally require more tooling stages and labour.
Where does Topseal install polished concrete?
Topseal provides polished concrete services throughout Vancouver Island, including Victoria, Duncan, the Cowichan Valley, Nanaimo, Parksville, Qualicum Beach, the Oceanside Region, Courtenay, Comox, the Comox Valley and Campbell River.