Grooves on bottom of Hardwood planks


Old 10-15-07, 09:14 AM
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Grooves on bottom of Hardwood planks

What are the (usually 2) grooves cut into the bottom of hardwood flooring for??
When I purchase should I be looking for one kind of cut or another? Some of them are deeper or wider than others.
Are the cuts any sign of quality of the flooring?
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Old 10-15-07, 10:50 AM
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The relief cut in a board such as wooden flooring facilitates its fit against the abutting surface. Most trim has a relief cut into the back for this purpose.
Old 10-24-07, 07:25 PM
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Shipping is done by weight. Less weight less cost to ship, compared to what it cost to mill the board like that. It also is so in grading, they know they are looking at the surface.
Old 10-24-07, 10:22 PM
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According to the manufacturer, the grooves are cut into the bottom to allow air flow.
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