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A most unfortunate flooring failure!

(06-01-2013, 01:12 PM)jim decker Wrote:  On another note 4,000 sf very expensive wood. Hired gun for mfg stated 3 calcium chloride tests 5 lbs 5.5 lbs 5.84 lbs. What makes this more remarkable is he states the wood moisture content top 7.1% back 7.3% highly unlikely this is possible. Wood science makes this impossible. RH testing results 60%. Cause ambient humidity levels 15% producing a moisture imbalance of 2% differential top to bottom. Result Dry cupping!
For wood guys sandwich was 2 layers of 15 lb felt secured with black asphalt mastic, 3/4" plywood exposure 1, Aquabar between plywood and hardwood. Subsequently they installed 3 steam humidifiers to rectify the situation. White oak rift and quarter sawn. Very expensive hardwood $20 sq ft. Real sad! Looks like it is coming around after 4 weeks of exposure to 40% relative humidity.

Jim, whats the width of that wood? Most of the old wood round the old parts of town are 2 1/4 RS and have no issues with dryness.

With all the felt and aquabar underneath? Don't think he needed that unless there was some sort of damp crawlspace, and even then he should have applied more time to resolving the space.

Or he could have used that energy to educate the consumer on proper humidification.
Stephen Perrera dba
Top Floor Installation Co.

Messages In This Thread
RE: A most unfortunate flooring failure! - Ernesto - 06-02-2013, 09:58 AM

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