Today whilst we were fitting a large stone hearth in a friends house we managed to drop a couple of small blobs of mortar on his new oak floor. Despite cleaning it up almost immediately it has stained the floor. The floor was laid 4 weeks ago and has had 1 coat of hard waxoil and is awaiting another coat when we have finished his fireplace. Anyone out there know how to remove these stains before the floor is given its final coat?
stain on oak floor
- Thread starter bikerm4
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Ouch!
Two things wrong here:
second coat of hardwaxoil should have been applied 6 - 8 hours after first layer;
mortar (any product containing cement) spilled on an Oak floor can react with the 'tanner' (not sure it word is correct, but is like resin in pine boards) in the wood, leaving dark, black or grey spots. specially when the wood isn't protected sufficiently.
This damage can go very deep into the wood. Try rubbing it with steelwool 000 to see if that helps. If not, you'll have to use sanding paper (grit 80 first) (my guess is that should happen anyway, since they waited much to long to apply the second coat).
After rubbing/sanding apply hardwaxoil again, buff it in, let it dry for 6 - 8 hours and apply a second layer the same way.
Hope this helps and good luck
Two things wrong here:
second coat of hardwaxoil should have been applied 6 - 8 hours after first layer;
mortar (any product containing cement) spilled on an Oak floor can react with the 'tanner' (not sure it word is correct, but is like resin in pine boards) in the wood, leaving dark, black or grey spots. specially when the wood isn't protected sufficiently.
This damage can go very deep into the wood. Try rubbing it with steelwool 000 to see if that helps. If not, you'll have to use sanding paper (grit 80 first) (my guess is that should happen anyway, since they waited much to long to apply the second coat).
After rubbing/sanding apply hardwaxoil again, buff it in, let it dry for 6 - 8 hours and apply a second layer the same way.
Hope this helps and good luck
Cheers WoodyouLike. As you say, we have a few dark stains where the mortar was dropped. I will finish the work i have to do and give it a go as you suggest.
The friend who lives in the house is treating the floor himself so i will show him this post. He,s on his hols at the moment so he will have a bit of sanding to do when he gets back to prepare the floor for the hardwax oil treatment again.
Thanks again
The friend who lives in the house is treating the floor himself so i will show him this post. He,s on his hols at the moment so he will have a bit of sanding to do when he gets back to prepare the floor for the hardwax oil treatment again.
Thanks again
I had this happen to me only last week. But this was a small drop of plaster that landed on oak kitchen worktop. As soon as I wiped it of the stain was there. I was very worried because I was unsure how deep into the wood it would go and also if it could be removed. Luckily it came out with some gentle sanding.
Another lesson learned though
Its typical though isn't it, all the worktops were well protected apart from that very small area.............
Another lesson learned though
Its typical though isn't it, all the worktops were well protected apart from that very small area.............
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its areal problem with oak, recently just laid a raised deck area in green oak been walking around the muddy site and got quite a bit on the decking went to pressure wash it off the otherday and the whole things stained that black colour, found out its from the red clay the clay is red from iron oxide in the soil hence the staining i am fully aware of iron and oak staining but never thought it would happen from the soil, am going to have to go back and turn over all the boards and keep it clean this time don't know how the customer is going to manage as the site like a quaggmire.
Hi Nige
Tanned acid is the word, hubby told me (Is that the same as tannin?)
Tanned acid is the word, hubby told me (Is that the same as tannin?)
bikerm4 said:
Hey up bikerm4, managed to remove all stains from the floor ok with a light sand as suggested
The floor has been fully prepared again and the 1st new layer of hardwaxoil inplace
2nd coat to be applied later today thanks for the advice (Woodyoulike) Twiglet
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I think it's tannic acid (also kown as tannin). Extracted from oak and used to tan hides, long ago. Hence the name.
Right you are
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