Wood – How to fix dark floor stain absorption without starting over

Prep is always the most important step. Make sure the wood is dry. It shouldn't make too much of a difference that it rained after you sanded it down as long as it still has pores to absorb the stain.

I always recommend placing a large tarp over the area so that if it does rain, you don't have to worry too much about your work.

A trip to the hire shop is in order. One floor sander and an edge sander. A selection of medium and fine grit belts-the hire shop will probably credit you for unused materials. Get all the windows open and wipe the floor over with isopropyl alcohol to remove as much old wax as possible, this will save a lot of clogging of the sanding medium. First sand across the grain, do all the edges with medium then fine grit, finally fine grit along the grain. Dampen the whole floor with water, leave for a leisurely lunch, return, fine sand the edges, then along the grain with the floor sander. Clean up really well, ensure you vacuum clean all the joints and cracks. Apply a coat of sanding sealer and leave overnight. In the morning use a hand sanding pad and very fine grit and remove all the 'nibs'...you will have some! Apply a second fine coat of sanding sealer. Leave overnight or better still a couple of days. Apply the first floor wax layer with a 'scotchbrite' pad or similar (this will de-nib the floor as well) in a very thin coat-not forcing wax into the joins. Buff,leave a couple of days, repeat at least three times. Note that for the kitchen a better finish will be to apply four or five coats of tung oil over a couple of weeks which will not show water spots as readily as wax, as always, when applying oil or wax a little many times gives the best finish.