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Apparently roofing manufacturers are recomending the use of pressure washers on roofs.

Roof-A-Cide receives official approval from Gerard Roofing Technologies and Allmet Roofing Products for use on their Stone-Coated Steel Roofing Products.

After years of testing, Gerard Roofing Technologies & Allmet Roofing Products have joined with the largest manufacturers of Asphalt Shingle, Clay Tile, and Concrete Tile Roofing to recognize the safety and effectiveness of Roof-A-Cide in protecting a roof and eliminating the need for cleaning!

To date, Roof-A-Cide has been tested and approved by the following Industry Leaders in U.S. Roofing Materials Manufacturing for the Residential Market:

• GAF - Asphalt Shingles
• MonierLifetile - Concrete Roof Tiles
• U.S. Tile -Clay Roof Tiles
• Gerard USA - Stone Coated Steel
• Metro Roofing Products - Stone Coated Steel

Roof-A-Cide remains the ONLY EPA Approved and Manufacturer Approved solution that can PREVENT the problem of Roof Stains seen throughout the US without the need for Chlorine Bleach or Pressure Cleaning.

But wait..... I talked to them and they sell you a PRESSURE WASHER with your franchise.