Dear Interlock,

We are thrilled about our new roof.

Thank you for a great job, installed in a professional manner. I do recommend your product to all our friends. Thanks to john Pastor for presenting Interlock and your roof system in a manor that was superior than another companies approach. Shelby and I wish you continued success with your product against the environmentally damaging and wasteful paper / tar / granular shingles.

A. Shields
Calgary, Alberta