[Taltarzac725]

Originally Posted by retiredguy123

I contacted Certainteed about this company and similar products. Here is their reply.

"Thank you for contacting Certainteed.
Using products of that nature will void our warranty.
Please reach out to our Roof Technical Team at -

Mon. - Fri. 8:30am-5pm (Eastern Time)

Phone: 800-345-1145 option #3

Fax: 215-274-2519

Email: rpg.t.services@saint-gobain.com

They will be able to assist you further with recommendations on how to care for your roof."

Thanks!