If the surface that you have is very blotchy you need to make sure that you will remove the stain first by stripping it.
How to fix blotchy stain on oak floors.
Step 4 seal the floor.
Wait for the stain to completely permeate the wood by giving it at least 2 days to fully dry.
Don t go overboard and only use a very small amount of stain on the dry rag.
Wipe off the excess with a rag immediately.
Best way to achieve an even colour with darker stains is to water pop the floor before staining.
Wipe on stain generously but evenly.
For water based stains use a lacquer thinner.
If you do have a blotching that is not too severe then you can try and glaze it.
Apply a wash coat of shellac and then the statement.
Before applying gel stain thoroughly mix any liquid at the top of the can back into the gel.
Allow the stain to sit for the time recommended by the manufacturer usually about three minutes and then wipe off the surplus working with the grain.
If you re using an oil based stain scrub the surface while it s.
First strip as much of the color as possible.
Wipe dark areas of the floor with mineral spirits or acetone to lift the stain from the wood.
Once the stain is correct and set you can seal the floor to protect the finish.
Step 3 allow dry time.
Wet not soak the surface.
You can also choose to sand it and even do both and just start over.
Would it cause blotchy stain on oak.
Scrub out the streaks then reapply the stain liberally.