After laying out the pattern for the lines cut them into the concrete using a circular saw equipped with a masonry blade and using a board a guide.
Cutting grout lines in concrete.
Spray the stain in an inconspicuous area first and allow it to dry to ensure it is the color you want on the floor.
Practice spraying stains on inexpensive concrete pavers to help you figure out the color combination you like best.
Work the grout into the grooves with a grout float.
Using the saw muzzle.
In some cases the operator makes a kiss cut of less than depth and in other cases a slightly deeper cut is made and the groove is re grouted.
The most common use for the saw muzzle is silica dust collection which is made while cutting expansion joints and scoring new concrete.
Dustless concrete cutting can be achieved when cutting faux grout lines that are commonly seen in decorative floors either because they were specified or as an afterthought.
The saw muzzle has many applications for the decorative concrete trade.
Wear surgical booties over your shoes to avoid shoe prints in.
Cutting faux grout lines dustless concrete cutting.
Start by thoroughly cleaning the surface with a pressure washer.
If you prefer use a 4 inch grinder with a diamond tipped blade to cut simulated grout lines into the concrete.
The saw muzzle can be used during floor repair cutting faux grout lines scoring a new slab or to prevent cracking.