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Be Aware of Water in Concrete

Wood Floors are Beautiful in the Bedroom TooWhen a client’s water heater flooded their Goodwin Heart Pine engineered wood floor the insurance company called in a restoration contractor. The contractor pulled up half the floor to the point where they said the water had gone in the concrete. After three days of dehumidification they declared the concrete dry.

Following the National Wood Floor Association’s procedure we used a concrete meter that requires drilling a small hole 40% of the depth of the slab. The meter readings were much higher than recommended to install a wood floor over concrete.

We pulled up the remainder of the floor so that the entire slab could be dried. And we provided the restoration contractor with the meter readings and a study on water movement through concrete. Fortunately, they agreed to bring back the dehumidification system and get the slab to the proper moisture content.

Wood floors are not rocket science; however, they do demand a scientific approach to water and subfloors of all types. Call if you would like us to send you the research paper on how to properly test concrete for moisture content.

Best wishes for great wood floors all the time for the longterm.

Antique Wood Flooring Myths

Download "Kiln Drying 101" by by Andrew St. James ARS PhD, COO Goodwin Heart Pine and Director of the company dry kiln.1) Some people think that antique wood does not shrink and swell anymore so it does not need to be brought to the proper moisture content on the jobsite.  On the contrary wood science and field experience both indicate antique wood shrinks or swells when the moisture content changes.  You need to install the wood at a moisture content that is close to the value that will be maintained while the building is in use.

2) We often hear the remark that old wood does not need to be kiln dried.  There are two issues here.  First, most air dried wood has a moisture content too high for interior use.  The second is the possible presence of living organisms such as powder post beetles, termites, or mold.  Kiln drying to 140 F for several hours eliminates live insect pests in the wood.  Proper kiln drying also eliminates living mold and brings the moisture content down to a level that wood will not support mold growth.  Click on the link to read more information about kiln drying in our article in WoodSource KilnDrying101 or click the thumbnail above.

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