I applied Ronseal's exterior wood protection on an Oak wood surface because the builders left a small piece of the staircase untreated (and stupidly, I decided to fix it) and after a few days, some black spots formed (see pictures: first picture is after the application and second picture is what it should look like...). I gather I used the wrong treatment.
Is there any way I can get rid of the spots and what kind of oil would be best to apply? (Danish Oil?) I sanded down the surface a little but the spots seem to go deeper.
Any ideas?
Is there any way I can get rid of the spots and what kind of oil would be best to apply? (Danish Oil?) I sanded down the surface a little but the spots seem to go deeper.
Any ideas?