For example in wood surfaces with mc readings above 20 mold spores can develop.
Acceptable moisture levels in carpet.
A reading of 14 wouldn t necessarily throw up a red flag and is most likely the result of installing carpet on a slab below grade.
Hardwood floors the maximum subfloor moisture level will be either 12 or 13 depending upon the manufacturer.
Moisture meter showing high moisture content in gypsum board behind tile.
Checking for moisture below carpet using a moisture meter during a home inspection.
Then the hardwood flooring moisture content must be within 2 4 of the subfloor moisture.
When you install hardwood laminate or vinyl flooring over a concrete subfloor one of the most important steps to take to ensure the lasting beauty and stability of your floors is moisture testing.
2 for plank 3 wide or more hardwood and 4 for strip 2 wide hardwood.
Many investigators use moisture meters to find wet areas where mold may be growing.
To use a moisture meter check the affected area and compare the reading to a control reading in a non affected area see section titled response equipment.
Checking for moisture below carpet using a moisture meter during a home inspection.
07 the contractor shall provide substrates within moisture and alkalinity levels acceptable for floor covering materials.
The two most commonly accepted moisture test methods are insitu percent relative humidity rh astm f.
Before you lay the first plank you must ensure that the moisture level in the concrete subfloor is low enough that it will not affect your flooring.
These meters measure the moisture in many types of building materials.
Mechanical room leaks standing water consistent relative humidity levels above 60 and condensation problems should be fixed as they are.
Test results must show acceptable conditions within manufacturer s moisture and alkalinity limits before.
Floor covering manufacturers whether producers of tile wood carpet or high performance floor coatings publish the maximum allowable moisture content of the concrete over which their flooring products can be installed based on results of various astm.
Testing for moisture and alkalinity shall be done by an independent third party agency in a timely manner.
The rule of thumb is that moisture levels that exceed 20 are when you have a problem.
These meters which measure moisture content mc accurately test surfaces and areas for moisture which may make the material being tested susceptible to fungal growth and spread.
This will vary from product to product.
