The recommended glue for floating installation is tongue and groove engineered flooring glue.
Tongue and groove flooring installation guide.
For instance solid hardwood flooring is typically nailed down during installation while tongue and groove engineered flooring is usually clicked together or completely glued down.
The glue must be placed along the topside of the groove the full length of the grooved side and end.
The type of installation you choose will depend on your subfloor budget lifestyle and the type of wood flooring you select.
For tongue and groove flooring drive a nail at a 45 degree angle through the tongue then conceal it by engaging the groove of the next board.
Be sure to countersink the nail drive it slightly below the surface of the wood to prevent interference in the joint.
Kayu tongue and groove porch flooring soffit when kayu batu tongue groove is being installed as a soffit we highly recommend a polyurethane adhesive in addition to fasteners due to the weight of the hardwood.