Sanding down a kitchen floor

[Charles Wilson]

I have a 12 ft by 13 ft kitchen floor that needs to be refinished per SWMBO.  The floor was done around 15 years ago.  It was sanded down, (left au naturál) and coated with satin polyurethane.  Floor is currently not dinged up too bad but has lost most of its protective covering.  The million dollar question is: What grits/types of sand paper would you recommend that I use with my Rotex sander?

Regards,
Chuck

 

[sancho57]

OK since no one has responded, First let me say Im not a wood floor guy.

I have refinished a couple and recoated one.

It depends,

If yer useing a oil base I would go with grits between 80-100 all ya need to do is just scuff up the finish clean and recoat.

Water base I would work it from 80 lighly scuffing to 120-150.

Be sure to clean the surface when yer done before ya top coat it

Like I said, Im not a floor guy.

 

[passnthru]

I'll chime in.
My company does wood floors daily.
Not so sure you want to do this with your Rotex, but if you  insist....
Be aware that you have to get all the old finish off. If you don't you'll end up with yellow spots under the new finish.
Typically we start with 40g follow with 60g, full fill the floor, pass 80g and then screen at 100-120 grit. If the old finish is real tough we may have to start with a 36g, 24g or event 16g.  But with your description I think 40 should be a good start. Don't skip any grit course.
We use and recommend Bona fillers, stains and water borne finishes and you can find a wealth on their website. You may want to look into Rubio finishes as well. Not so popular yet but wonderful product.
I hope that helps.
JP

 

[sancho57]

OH my bad, I reread the OP and he wants to refinish the floor. I thought he wanted to re coat it.

Never mind my answer....