I never recommend any coating on marble as once the coating begins to deteriorate, is starts to peel. This can happen as soon as a few weeks and once it happens, you have a very unsightly piece of marble. Also, if you use a coating like a polyurethane, when it comes time to re-coat, you will need to strip the old coating off and this will require the use of very aggressive chemicals.
So in my opinion, I would not use polyurethane on your marble top.
The shine most likely will not last and and when it begins to break down, it will look very bad.
Use a sealer made to seal marble. it will penetrate the surface and protect it. When a drop of water soaks into the marble and doesn't bead up it's time to seal. Will need to be doe several times through the marbles lifetime.
Wipe on poly works well on wood surfaces. I use that as a top coat all the time. However, it shouldn't be used on marble. Clean the marble and use a product recommended by a counter top company - if needed.
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Need to reglue about 6 places on our kitchen counter tops. Want to know the best glue to use, how to do it and will I need a bunch of C clamps to hold it down?
Yes.
The marble will need to be very clean, to avoid “fish eyes”.
I never recommend any coating on marble as once the coating begins to deteriorate, is starts to peel. This can happen as soon as a few weeks and once it happens, you have a very unsightly piece of marble. Also, if you use a coating like a polyurethane, when it comes time to re-coat, you will need to strip the old coating off and this will require the use of very aggressive chemicals.
So in my opinion, I would not use polyurethane on your marble top.
The shine most likely will not last and and when it begins to break down, it will look very bad.
Use a sealer made to seal marble. it will penetrate the surface and protect it. When a drop of water soaks into the marble and doesn't bead up it's time to seal. Will need to be doe several times through the marbles lifetime.
I wouldn't recommend it.
Wipe on poly works well on wood surfaces. I use that as a top coat all the time. However, it shouldn't be used on marble. Clean the marble and use a product recommended by a counter top company - if needed.
No, I tried it on a side table and it peels off and leaves the marble dull.
Please don't do that! Better to sell it and replace with something you do like!