Expert Answers in

ANSWER - From your photo the bottom edge of the wall tile where it is adjacent to the transition joint from the wall to the floor has efflorescence staining.  That suggests water is traveling from…

ANSWER - It is not common to stain natural stone. There are enhancer sealers that applied to enhance the natural color of the stone. Natural stone is just that.  Every piece of stone is somewhat…

ANSWER - Denatured alcohol is acidic and can act as a solvent to break down sealers or stains that could be on the stone.  They use oxalic acid in polishing stone because it breaks down…

ANSWER - Ludders Limestone is a Texas Limestone.  The absorption rate and propensity to stain does vary depending on the physical properties of the stone.  Per ASTM C568 limestone can be rated as a low…

ANSWER  - W244E can be a ceramic or glass tile or a stone application for an exterior framed wall with cement backer board over it.   If it is a cementitious backer board then they would put…

ANSWER - Unsanded cementitious grout should only be used in grout joint widths of 1/8 inch or smaller.  If you use it in wider grout joints it will tend to crack. Sanded grout should be…

ANSWER - Hollow sounding tiles is not a defect per se.  Depending on the substrate and installation materials and methods being used the tile can have a hollow sound without anything being wrong. On the…

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ANSWER - The Natural Stone Institute (previously the Marble Institute of America) Dimensional Design manual state that the grout joint on a stone should never be less than 1/16"  wide and preferably 1/8" wide.  To…

ANSWER - Chances are the hot metal melted the glazed tile surface.  If the tile body is porcelain then by definition it should be impervious and should not compromise the tiles' ability to resist moisture.