Gail, Thank you for your inquiry. Stonewalled is a zero VOC water based penetrating surface protection system. The system is designed to penetrate porous mineral surfaces and chemical bond to the mineral compounds; creating years of surface protection. The key is to take the surface to full saturation as it will bead up or reject additional "coats" once cured. Should any residue exist on the surface, wait 24 hours and rinse off with warm water and a scrub pad. Stonewalled will not penetrate porcelain as it does not have the needed porosity. Thank you again for your inquiry. -Customer Service
Highly recommended for Saltillo tile. Any porous tile will benefit from Stonewall Penetrating Sealer. Spray on or roll on, this product is extremely easy to apply and does the job. Expensive, but does what it states.
Yes, it can be used on a natural limestone shower.
Yes, you have to seal before and after applying the grout.
Stonewalled Sealer should last 3-5 years (or longer) depending on the porosity of the material, cleaning regimine and environment/traffic. Follow all application instructions. Do not use harsh cleaners or pressure wash with greater than 800 psi.
Both methods work equally well. Spray method may be more efficient for later areas. Either way, just make sure you apply to saturation! Porous materials will need more product. Apply, and allow a few minutes to soak in, then test to see if it will take more. If it takes more, give more... continue this process until it will not take any more (beads up).
Hi Jack, Stonewalled Sealer it intended for use on natural porous mineral surfaces like unsealed, unpainted stone, concrete, brick, pavers, etc. And cannot be used on man-made, oil-based, plastic , rubber or resin based materials. The general rule of thumb is if the surface absorbs moisture (darkens when wet) then it will accept Stonewalled. Get the surface wet, wait a few seconds and wipe off the excess, if the surface is still dark then moisture was absorbed and Stonewalled can be used. Good Luck!
Hi TK, thanks for your question. Yes, Stonewalled Sealer can be used on flagstone but the previously installed sealer should be stripped/removed first. General rule of thumb is if the surface absorbs water (i.e. water penetrates the surface/darkens when wet) then it will accept the Stonewalled sealer. Anywhere the previous sealer still makes the water 'bead" or keeps the surface from absorbing, will need to be stripped/removed. Good luck!