MRGNB Specification Manual

The Master Roofers Guarantee Corporation (or “MRGNB”) is set apart from other roofing organizations via the standards set forth in it’s specification manual, which, when adhered to results in a start of the art product.

MRGNB Preventative Roof Maintenance Guide – 2015

The maintenance guide sets out what constitutes “maintenance” and what constitutes “warranty” as well as specifying what aspects of the roof are covered under the warranty.

MRGNB Quality Assurance Observation Manual