These products regardless of species thickness or width can be glued down successfully over concrete or gypsum based sub floors.
Glue solid wood floor to concrete.
Engineered hardwood is perfectly suited to do the job and there is no reason to glue down solid hardwood.
One suggested glue is pl 400.
There is no valid reason to glue a solid floor to concrete there are plenty of good engineered floors on the market the rh in the home must be maintained or it will cup.
In this case the subfloor is the concrete slab.
The only limitation is the slabs must be above or on grade.
Glue wood flooring to a concrete slab a plywood core makes engineered flooring the most stable choice provided the slab is flat and dry by ken fischer issue 170 if you want to install flooring on a concrete slab your floor covering choices are limited.
Installations of solid wood are never recommended below grade.
The other concern has always been that water in a concrete slab will be absorbed by wood flooring.
Wood needs to move as the humidity increases and decreases throughout the year.
Solid hardwood should not be glued to a concrete slab.
When affixing wood to concrete one of the best and easiest methods is to glue the wood to the concrete with epoxy.
I have seen some major disasters because someone who lacked experience did exactly what this post suggests and ended up with a 16 000 failure in no time.
I have seen some glue down 3 4 solid hardwood floors directly to concrete and many installers use straps or clamps in an effort to force board rows tighter together during installation.
Although you can attach hardwood directly to concrete with glue or nails it s not advisable.
If the wood can t expand sideways it will twist warp or cup as it absorbs moisture.
Glue forms the initial bond but without screws and nails the natural expansion and contraction of the wood can break or weaken the glue.
Glue is a secondary method of attachment for bonding wood to concrete.
When glue is used in conjunction with screws and nails the bond is strong enough to resist natural movement of the wood.