Formula: Winter Heating + Humidity (Rh) = Happy Hardwood 35% to 55% is the recommended year-round Rh (Relative Humidity) for all types of hardwood. While engineered hardwood stays dimensionally stable through a very wide range of humidity levels, there are other things such as dry cupping or veneer checking that can occur as a result of very low humidity levels for prolonged periods of time. When Rh dips below 30% for more than 3 or 4 days, there is a risk of damage Contractor’s preferred flooring choice. 1-110 Frobisher Drive, Waterloo ON | 519-885-2357|www.marcellacarpets.ca
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