Stain Blocker for Roofs
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.
Maintenance coats should be re-applied about every 2-3 years or at the first sign of the stains return. This product is also effective on nearly any exterior painted or unpainted hard surface once stains have been removed.
Clear Protection To Prevent Black Roof Stains From Returning
This milky white liquid treatment dries to a clear natural look. Simply spray on cleaned asphalt shingle roofs to form an invisible barrier that blocks the return of unsightly roof stains. Maintenance coats of Stain Blocker for Roofs can be re-applied every 2-3 years or at the first sign of stain return to help block further staining. DEFY® Stain Blocker for Roofs contains no acids, caustics, or bleaches and will not harm plants when used as directed.
DEFY® Stain Blocker is the second step in a 2 step system to clean and protect your roof. For application instructions, see the data sheet above or click here.
For a detailed report “Asphalt Roof Cleaning and Stain Prevention” click here.
Product Data
- Available Sizes: 1 and 5 gallon containers
- Coverage Rate: Approx. 250 sq. ft. per concentrated gallon on roofs
- Application Method: Pump sprayer
- Rinsing Method: Do not rinse off. Spray on then allow to dry.
- Dry Time: 1-8 hours depending on temperature and humidity
- Cleanup: Soap and water
Roof Cleaning Steps
Step 1: Clean
Wet the section of the roof down that you will be working on first. Apply the Roof Cleaner Concentrate using the Roof Cleaner Applicator tool. Spray this on the roof and allow it to set for 15 minutes. (Make sure it remains wet. If it dries out, spray more cleaner or some water on it to keep the cleaner active)
Step 2: Rinse
After attaching the Roof Rinsing Tool to the end of your hose, turn on the water, then turn on the utility water pump. Start at the peak of the roof and work your way down towards the gutters, rinsing the Roof Cleaner Concentrate off the roof.
Step 3: Block
After the entire roof has been cleaned and rinsed, apply the Stain Blocker for Roofs using a pump sprayer. This can be applied to a damp roof, and does not need to be rinsed off.