Custom Prism Ultimate Performance Grout 17 lb. Charcoal

Custom Prism Ultimate Performance Grout in Charcoal offers unmatched color consistency, strength, and versatility for all your tile projects. Formulated by Custom Building Products, this 17 lb. bag delivers a fade-resistant, polymer-enhanced grout that stays true to its rich charcoal hue from mixing through curing. Perfect for both DIY enthusiasts and professional installers, it provides smooth application, exceptional durability, and long-lasting beauty.

Designed to stand up to heavy use and demanding environments, this grout is suitable for interior and exterior installations. Whether you’re grouting floors, walls, countertops, tub surrounds, showers, or high-traffic commercial spaces, Custom Prism Charcoal ensures a uniform finish and superior performance. It even excels in submerged or wet conditions—ideal for swimming pools, spas, water features, and fountains.

Key Features

• Color-consistent, fade-resistant formula
• Polymer-enhanced for crack resistance and durability
• Smooth, non-bleeding texture for clean joints
• Suitable for floor & wall tile, interior & exterior
• Ideal for residential and commercial applications
• Works in submerged environments (pools, spas, fountains)