Do not use any grey mud or thinset that can penetrate through to the light stone.
White thinset for marble.
In conclusion ensure if you re going to install white marble or light stone use a white colored thinset and portland cement or waterproof system.
For most installations a modified thinset such as the 703 or 710 is recommended.
For marble tiles the adhesive of choice is often a cement based thinset.
Suitable substrates include interior and exterior floors countertops and walls.
The ultimate lightweight one step polymer fortified thin set mortar that is ideal for the installation of gauged porcelain tile panels slabs gptp as well as for interior and exterior installation of ceramic tile porcelain tile stone quarry tile pavers and brick.
I have done 9 tile jobs to date including two other backsplashes but this was my first go around with marble.
A light weight thinset is commonly used on walls.
Creating this surface can take time and effort but no matter how perfect the surface is choosing the proper adhesive is just as important.
I used white thinset i let it cure for 6 weeks then sealed it twice with 511 sealer and it looks absolutely stunning.
Use a non sanded grout to protect both the marble and the grout from discoloring too much.
For rectangular plank tile use a medium bed mortar such as 720 marble pro.
Light weight thinset such as merlite 820 is less likely to sag if used properly.
My vote is white it will keep the marble looking pristine and will darken a bit over time matching the look of natural carrara quite well.
Granite tile is extremely dense and impervious to staining during installation therefore either gray or white thinset are appropriate although the do it yourselfer may want to choose the thinset color that is the closest in color range to his selected grout color.
Versabond cures quickly and adheres to most surfaces.
In the case of marble tile choosing the right thinset can be essential to ensuring that your tile looks beautiful and remains in good condition for many years to come.
Fortified thin set mortar is a professional formula all purpose mortar polymer modified to provide good bond strengths.
Also after installation continue to seal your stone at least one time a year to prevent future staining.
White grout is a risk in bathrooms though as everyone mentions.
Don t forget to select the correct trowel size.