by Cornerstone Roofing | Feb 18, 2020 | Manufacturer Credentials
CertainTeed’s Highest Credential Level Cornerstone Roofing, Inc. is celebrating its 14th year as a CertainTeed SELECT ShingleMaster Roofing Contractor (CertainTeed’s highest credential level). For a recap of what this entails, CertainTeed states, “Cornerstone...
by Cornerstone Roofing | Feb 25, 2014 | Manufacturer Credentials
Cornerstone Roofing, Inc. has been a CertainTeed SELECT ShingleMaster for over 8 years now. We just received our latest certificate for 2014-2015. This is the highest credential level attainable with CertainTeed. The certificate explains that our employees are Master...
