Forget the notion of trying to fill sand and re seal with your own coating.
Apply extra coat on prefinished hardwood.
The urethane used in sealing wood surfaces is more commonly known as polyurethane.
Prefinished floors offer serious challenges to re coating because of the type.
As noted the prefinished allows for the possibility of spills going through the slats.
Yes a polyurethane finished hardwood floor may have additional coats of polyurethane applied.
Can prefinished hardwood be sealed to avoid this problem.
Keep the floor clean use furniture floor protectors and expect to apply a new coat of polyurethane on the floor every five to.
Before you attempt to apply polyurethane to a prefinished floor contact the flooring.
Lightly sand with a dull 120 to 150 grit abrasive screen or 2 steel wool under a heavy floor buffer.
Whether you can seal a prefinished floor with polyurethane depends on your circumstances and the condition of the hardwood floor.
There is no way you can ever manually duplicate the factory coating.
You should vacuum the entire floor frequently with a soft hardwood floor attachment which is especially important if you have prefinished hardwood flooring because the bevels collect dirt quickly.
It cannot be done.
Traditionally hardwood flooring was always installed as unfinished planks that were then stained and finished with a protective surface layer right on the worksite.
But since the introduction of prefinished solid hardwood during the 1940s this newer form of flooring has become increasingly popular and today you may find that it s easier to find than traditional unfinished hardwood planks.