Rating Newest Oldest. Best Answer: Air Brakes are included as part of a CDL-A so a seperate endorsement is not required, but for a CDL-B or lower, If the vehicle you will be driving is equipped with air brakes, then you need an air brake endorsement.
The Color Sealer is an Acrylic Resin that has a chemical reaction with the grout that hardens in the pores and dries to a natural look and feel. The constant acting mildicides provide a sanitary grout line surface. It colors and seals in 1 bottle. Easily wipes off tile surface when applying.
In most cases, however, it is not the slate that will stain, but the grout between individual tiles. How you clean that grout depends on whether it is colored or non-colored. A sealer can keep floors cleaner. For colored grout, always test cleaners in an inconspicuous area before using them on the stain.n most cases, however, it is not the slate that will stain, but the grout between individual tiles. How you clean that grout depends on whether it is colored or non-colored. A sealer can keep floors cleaner. For colored grout, always test cleaners in an inconspicuous area before using them on the stain.