I'm planning on installing hardwood flooring in several rooms. Home Depot
sells the Thomasville brand, 1/2" thick engineered 9-ply wood planks,
tongue-and-grooved, 5" wide, various lengths from 12" to 48". I will be
using adhesive to glue the planks to a unglazed 12" by 12" ceramic tile
floor on concrete. Thomasville recommends Bostik adhesives for this
purpose. The tongue-and-grooves are not supposed to be filled with glue.
I bought a box of flooring to check out the color, grain, etc. and noticed
that a few of the 48" long planks have a slight warp or crown, about 1/8" or
less at the center. There weren't any planks with a reverse crown.
Is this typical for engineered wood planks from other manufacturers? Is the
adhesive strong enough to flatten the crown during installation? It takes 1
or 2 pounds of force applied at the center of the plank to eliminate the
crown. Thomasville recommends rolling the floor with a 100-pound roller
about 1 hour after application of adhesive.