For the second story a foamed type of lightweight concrete is being used over plywood for sound absorption between floors.
Light polished concrete floors.
Bob harris the proper techniques for polished concrete floors concrete contractor february 2006.
As the number of grit increases so does its fineness.
We are building a 2 story condominium complex with concrete slab on grade.
Polished concrete flooring is simply a concrete floor that has been treated with a chemical densifier to fill in the holes pores and ground down similar to sanding wood with progressively finer grinding tools.
Today specifications for polished concrete are now including specified gloss readings determined using gloss meters see table.
When a transparent coating is applied on a polished concrete floor the concrete surface needs less preparation.
A first passage with diamond grinding machine is.
All polished concrete floors begin in the same way whether with a smooth concrete surface that should be ground to expose the stone in the concrete matrix and reach the desired finish.
Gloss values express the degree of reflection when light hits the concrete floor surface and range from 20 to 30 low gloss to 70 to 80 high gloss.
That is a polished concrete floor that works its way to a higher finish over 400 grit for example is.
The light sand exposure is a ground and polished surface typically exposing only the sand particles in the concrete floor.
More homeowners retailers architects and engineers are choosing polished concrete as their finished floor of choice.
This finish is considered a creamy looking surface and is the most popular choice for architectural ground polished floors.
Cost of polished concrete floor.
Aesthetics uniqueness ease of maintenance and light reflectivity are a few of the reasons why this flooring system is quickly becoming one of the most sought after hard surfaces.
The water retained by the air entrained concrete and the more porous lightweight aggregates also greatly increases the cure time for fully dry material.
A polished concrete floor costs 2 690 on average with most homeowners paying between 1 540 and 3 840 polishing 200 square feet of existing concrete could cost anywhere from 600 to 6 000 or up to 6 600 if you need concrete poured.