Hi, i am planning to sand my wood floors before i paint them, i am not sure what type of wood it is but it is over 15 years old and most of the floor has no more shine to it, looks stripped. but some areas are still glossy. I want to buy a hand sander like this one http://www.homedepot.com/h_d1/N-5yc1...atalogId=10053 and not an electric one to save money, the place im sanding is not big. But my question is, what grit sandpaper should i use?
You do know that pole sander is used for drywall right? It would take you like forever to sand your floor with that not to say you couldn’t use it for such an application. As per the sand paper, you can start with a 36 grit paper to remove the old finish and change the paper as often as necessary to ensure even sanding of the floor. Don't try to save money by overusing worn out sandpaper. You'll save yourself a lot of time and trouble by replacing it as soon as it shows signs of wear.
Work in small sections until you’ve finished sanding the entire floor. The coarse grit paper should have removed the majority of the old finish. Sweep and vacuum the floor to remove all the sawdust. Next use 60 grit sandpaper and sand the entire floor using the same methods you used when you were working with the 36 grit paper. Sweep and vacuum the floor again to remove any and all sawdust. Now the final sanding, use 100 grit sandpaper to finish sanding the floor and when finished sanding sweep and vacuum the floor once more to remove the sawdust now you should be ready for your new finish.