No. GW17 Grout Release is a water-based, low VOC solution designed to prevent grout from staining when applied prior to grouting and makes for an effortless grout clean up as well. 

Grout Release is excellent for use on natural stone, porous tile, ceramic, porcelain, limestone, flagstone, concrete block and pavers, saltillo, brick, slate, stucco and more.

• Coverage:  GW17:  200-1000 s/f
• Protects porous surfaces against grout staining
• Easy application with a sprayer, brush, roller or sponge
• Ready for grouting in as little as 30 minutes
• Comes off in the grouting process with no acid washing required
• Non flammable and low VOC's
• Available in gallons (No. GW17)
• DO NOT DILUTE