FAQ - Grouts for Tile and Stone
How do I ensure a perfect installation with a sanded or unsanded grout?
Reading all instructions before jointing is the key. Refer to the technical data sheet or to the section "How to" to get all the info you need for a prefect installation.
What is the difference between a sanded and unsanded grout?
Sand is obviously the major difference, but more important is where it is used. Marble, among others, should be installed using unsanded grout to avoid getting scratched. Using the right grout for a specific joint size is also very important. Unsanded grout is recommended on joints between 1/16" to 1/8" while sanded grout is recommended for joints between 1/8" and 1/2".
How much sanded or unsanded grout do I need for my project?
The amount of grout required depends on the tile size and the depth and width of the joint. A PROFIX grout coverage calculator is available on our website under "TOOLS".
What is the efflorescence phenomenon?
Efflorescence occurs when an alkaloid or saline solution migrates through a porous material by water evaporation. This creates a powdery, whitish film on the affected area. This is natural phenomena. However, be advised that PROFIX has put everything in order to handle this problem with the help of a huge variety of chemical products.
If you face this problem, it is preferable to use a phosphoric or sulphuric acid solution( 9006 cleaner) to clean the surface of its residues. After cleaning a surface with an acid solution, it is important to carefully rinse it with clean water.
Is sealing the joints necessary?
Grout joints remain very porous. It is therefore highly recommended to seal in order to protect against dirt, calcium, wine, mustard, etc. Having your joints sealed will also ease their maintenance.
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