Glue on subfloor

Q: I am installing 3/4″ hardwood flooring in my kitchen and dining room. Currently there is carpet. I have been pulling the carpet up, however, there is a lot of glue still left on the floor. Do I have to remove the glue?

Can I just lay the felt paper over the glue and then install the wood floor?

A: What are you installing over top of? The glue should not be a problem unless it is thick and has raised ridges of some significance. Provided what you are nailing to is flat you should be OK.