Floor Leveler Compound on Polyurethane Finished Wood
 

I'm getting ready to install a floating laminate floor over an existing oak floor topped with polyurethane. Have a few dips/sags to level out. Folks at HD advised using the Henry 549 compound.

Other than well cleaning the areas to be leveled -- should I also lightly sand the finish to de-gloss a bit? Would think that helps the leveling compound stick better?

Thx

Read the label--most SLCs require a primer--I am not familiar with that brand--but I'll bet there is a companion primer--

Why would you not refinsh the floors instead of going over it with laminite that will lower the value of the home and have a floor that looks like plastic?
Look in the houses for sale ads. There's lots that say real hard wood floors, none that say laminite floors.
Not trying to give you a hard time just looking out for your interest in the long run.

Per the manufacturer web site - this type from Henry's is a direct apply application (ie., a number of surface types and no primer). However I know that sometimes there are helpful tricks that installers use for certain situations....

Sadly this home was built in the early 80's and the flooring installed was done so, so with not great quality lumber. Not the best looking even with a re-finish (have seen some done by neighbors via contractors). Overlay we feel is the best economic way to go for this room - kind of wish that wasn't the case.....