They are available in 3 4 inch thickness as well as low profile styles that are 5 16 to 5 8 inch thick which are a good or installing over existing flooring.
How to install solid hardwood floor over wood.
To learn how to do this watch prepping plywood subfloors.
When installing new wood flooring parallel to an existing solid nail down floor add a minimum of 3 8 plywood underlayment over the existing floor to increase stability.
Like unfinished hardwood floors the prefinished types typically have tongue and groove edges on all sides.
Solid wood floors should not be installed in basements or below grade.
Wood floor installation requires a level subfloor and that your hardwood flooring is acclimated to the room s humidity and temperature according to the manufacturer s guidelines.
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.