Michael B. HardeMichael B. Harde is president of the International Association of Wood Flooring Professionals (IAWFP) and owner of Marlborough, N.H.-based Northeast Floor Covering Inspection and Consulting Services.MoistureUnderstand What Causes Checking in Solid Wood FloorsThe age-old misconception is that there are many conditions that can cause wood to check. The fact is that there is primarily only one. Checking in solid wood flooring has been and continues to be a prominent claims concern that all-too-often eludes proper identification, evaluation and resolution. Most folks involved with the wood flooring industry understand that checking is a condition related to moisture content changes in wood that results from drying stresses. Commonly misunderstood, however, is the fact that these stresses cannot and do not originate in wood installed within the normal environmental ranges of interior living spaces.Checking can manifest itself in various ways in different pieces of wood flooring. Below are some examples of problems that are all referred to as "checks" or "checking."• Checks are drying defects that occur during the lumber's drying process.October 4, 2011MoistureOverzealous Acclimation Leads to Gaps in White Oak Wood FloorNovember 30, 2007Page 1 of 1Top StoriesContractingIntroducing the Winners of the 2026 WFB Truck & Van ContestRoad-ready, strong and steady, this year’s WFB Truck & Van Contest winners brought their A game. Find out whose work vehicles won Best Exterior Graphics, Most Organized Interior, Most Unusual, Biggest Disaster and the new Exterior/Organized Combo award!TechniquesWhat Is Your Favorite White Oak Floor You’ve Ever Done?RetailBuilding Bozeman: 4 Must-Haves We Put in Our ShowroomStain/Custom ColorMy Rule Of Three: How I Match Customers With Stain Colors Right AwayNewsEnter WFB's 2026 Ultimate Wood Floor Guy/Gal Contest by Oct. 1