The DEFY Roof Cleaning system is designed to clean roofs stains caused by black algae and mold. Use DEFY Roof Cleaner Concentrate to clean, then use DEFY Stain Blocker for Roofs to prevent stains from returning.
Use this to apply the cleaner, simply pour the concentrated cleaner into the applications reservoir.
Prevent black roof stains from returning as quickly. DEFY® Stain Blocker for Roofs is an effective way to block many stains from reoccurring. It helps maintain the appearance of recently cleaned asphalt roof shingles, tile roofs, cedar roofs, and more. Once the roof has been properly cleaned and rinsed it should be treated with DEFY® Stain Blocker.