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.
Natural grout sealers are effective but need to be re-applied more frequently. The best sealer for bathroom floor tile and grout depends more on your needs and desires than the actual substances in the sealers. The best-performing sealers use a combination of chemicals that seep into the grout and don't allow moisture to pass. They are resistant to wear and tear and last the longest.