SFGate

Norm Walters Construction Inc. Never heard of that.

Ironwood Builders Wide plank flooring is less stable than narrower widths (real, not engineered wood). Good vapor barriers and an air conditioned space even out seasonal movement. Cupping is a result of moisture trapped below the floor, so tar paper vapor barrier under the flooring. If on a basement, zone it for AC and heat too. If on a crawl, make sure there is insulation in the sub-floor and a vapor barrier over the dirt. Last resort is screwing and pegging..more expensive and gives a different look. Stable woods are important too. Quartesawn oak will react less to moisture than plain sawn. Beech will move every day of the year, no matter what.

Norm Walters Construction Inc. I'm betting it's a concrete slab.

Cancork Floor Inc. No matter what, test your slab for moisture! Test it, then after that, test it again. And just before you are ready, test it again. Test your materials before, during and after install. Read up on what is considered appropriate moisture content for each wood you are looking at.

Always use concrete/foundation professionals in areas where moisture is an issue. Wide planked flooring is the rage right now. Five inch and 7 inch planks are what everyone is looking for/at. Make sure that you have researched each wood AND your slab has been certified as "dry" (that's nearly impossible...but you get the idea).

Norm Walters Construction Inc. We had a slab that was pegging the meter, this is what we used to seal it.