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Johns Manville

How to report a roof leak to Johns Manville

  1. Find your warranty number, located at the top of your warranty. If you cannot find your warranty number, make sure you have the building owners name and full physical address ready and you must call JM in person.
  2. Contact Johns Manville directly at (800) 922-5922 or email roofleaks@jm.com. You’ll need to provide the following information to the JM Representative or in your email:
    • Warranty #
    • Name, telephone and fax number of person reporting the leak.
    • Name and telephone number for the onsite contact.
    • As detailed description of the leak as possible.
    • IMPORTANT: Inform Johns Manville that RAMCON is your preferred roofer to send to the leak.
  3. If you send the request via email, we strongly recommend you ‘CC’ your RAMCON representative or roofleaks@ramconroofing.com. This will allow us to produce the required paperwork and respond immediately upon direction from the manufacturer. If you reported the leak via phone, you can send us a quick email or phone call so we expedite our response time.