| About MFMA |
| MFMA Calendar of Events |
| Member Mills |
| Allied Manufacturers |
| Distributor Members |
| 2010 MFMA Conference |
| PUR Standards |
| New! Accreditation Program |
| GREEN Information |
E-mail Update  |
| Ask a Technical Question |
| Inspection Services |
| Game Markings Manual |
| Source Book |
| Grading Rules |
| Product Information |
| Buyers Guide |
| Position Statements |
| Residential Use |
| Membership Benefits |
| Join the MFMA |
| Maple Flooring Manufacturers Association, Inc. 111 Deer Lake Road, Suite 100 Deerfield, IL 60015 888/480-9138 Fax: 847/480-9282 |
Electronic Moisture Meters on Concrete SlabsInstallation of an MFMA flooring system should not commence until the subfloor is determined to be "dry" by industry standard testing procedures. MFMA does not recommend installation of any maple flooring system over a newly installed concrete slab within 60 days of pour. Concrete slab drying time is affected by the type of construction, concrete formulation, location of the building and climatic conditions. Vapor barriers or under-slab membranes will likely increase slab drying times. Electronic moisture meters measure content of moisture in a concrete slab, most commonly in terms of percentages. Most electronic moisture meters take readings from the surface, while some probe into the slab. The moisture content of a slab indicates the degree of saturation, but not the vapor emission rate that is occurring. The MFMA recommends tests that indicate the quantity of moisture passing through a concrete slab, and for this reason does not recommend using electronic moisture meters. The MFMA recommendation for moisture passing through a slab is 4.5 lbs. or less of vapor emission per 1000 sq. ft. during a 24-hour period. If you have additional questions, please contact MFMA's Technical Director at 847-480-9138. Printable Version© Copyright 2005 |