ASTM F710 PDF

Current edition approved Feb. Published March Originally approved in Last previous edition approved in as F — Terminology 3.

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There are many factors that go into a successful flooring installation project, from selecting an appropriate floor material to a proper installation procedure. But just as important as these—and often overlooked—is careful preparation of the concrete slab. What constitutes a good concrete slab prep? It provides guidance on the proper steps to prepare concrete slabs to receive resilient flooring. First and foremost, the concrete floor should be clean, dry and smooth.

That means free of any dust, solvent, paint, wax, oil, grease, residual adhesive, or other materials that might prevent a strong bond. Due to accelerated project timelines, installers may be tempted to leave adhesive residues from previous installations. But this can compromise adhesion of the new floor. The standard recommends non-chemical methods of removing residual materials, such as scraping, brushing and vacuuming, because chemical removers may leave a residue that adversely affects bonding of the new floor.

And it reminds installers that sanding, bead blasting, or other mechanical means should not be used to remove old resilient flooring materials, as these may contain hazardous materials. Cracks, grooves, control joints, and other irregularities must be filled or smoothed with latex patching or underlayment compound. Expansion and other moving joints should not be filled; check with the manufacturer for the recommended joint covering system.

Moisture and alkalinity testing of the slab The standard also calls for moisture and pH alkalinity testing of the slab. It also recommends installation of a moisture retarder under all on- or below-grade concrete floors. Flatness is another important factor for optimum floor performance and life.

High spots should be brought down and low spots should be filled with an appropriate material. Careful attention to these guidelines can go a long way to reducing the risk of problems and helping ensure the new floor delivers years of trouble-free performance. Taking a little extra time up front can pay huge dividends in avoiding future headaches and call-backs.

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ASTM F710 Preparing Concrete Floors to Receive Resilient Flooring

More F It also includes suggestions for ensuring that the constructed concrete floor is acceptable for such installations but does not cover tests for adequacy of the concrete floor to perform structural requirements. A permanent, effective moisture vapor retarder, of the specified thickness and permeance, is required under all on- or below-grade concrete floors. Concrete floors for resilient floorings should be permanently dry, clean, smooth, structurally sound, and free of substances that may prevent adhesive bonding. Surface cracks, grooves, depression, control joints or other non-moving joints, and other irregularities should be filled or smoothed with latex patching or a recommended underlayment compound. The surface of the floor should be cleaned by scraping, brushing, vacuuming, or any other method. All concrete slabs should be tested for moisture regardless of age or grade level while all concrete floors should be tested for pH before installing resilient flooring.

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ASTM F-710, Does the Subfloor Need to be THAT Flat?

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