The Chimneysaver VOC-Compliant Solvent Base Repellent - 4 gal will allow you to waterproof your chimney that has already been treated with a water repellent. This repellent prevents freeze/thaw damage, efflorescence and stains.

Features:

• 5 gallon container
• Ideal for previously treated surfaces
• Can be used on concrete, brick or masonry materials
• Protects from freeze/thaw

This solvent based repellent can be used on brick, concrete and other masonry materials and will not stain or change the appearance of the surface. This repellent is VOC compliant. Please check local VOC codes before purchasing.