The roof drain is where the water goes - or at least where it is supposed to go. We decided to call them “Quality Assurance Compliance.” The Roof Drain Checklist These worked so well that we started sharing these lists with the roofing, plumbing and HVAC contractors. Thus, we followed this up with additional installation progressive checklists for most of the challenging components of a roof system: roof edge, pipe penetrations, flue penetrations, roof drains, and so forth. The list assisted not only the consultants, but also the roofing crews in the field. We started with the installation of a new roof drain, a detail that was of particular concern. Thinking about how to educate my staff and help them understand the detail intent and the installation process required, I came upon the idea of creating a step-by-step installation checklist of all the components of a detail that they could use to observe the construction. It is amazing how many roof drains do not have an underdeck clamp and are pulled out of the roof deck in a wind event. Photo 2: In this replacement roof drain, the underdeck clamp and drain bowl insulation have been installed. ![]() Not to digress too far, but when we started having young roof consultants, some RROs observed re-roofing construction in the field, and they sometimes didn’t quite understand the detail as well as they should have, resulting in work having to be corrected. ![]() You all know how it works - the foreman says the superintendent has that, the same superintendent that doesn’t own a note pad and seldom looks at the drawings. If I were in the field, I would often sit with the foreman and review the details, challenging them to understand “looking ahead” and to be sure all the materials were on-site. IMAGES: HUTCHINSON DESIGN GROUP LTD.Īs our details increased in complexity, the work crews - who never seem to have the full-sized drawings on the roof, but reduced copies with the text too small to read - had difficulty understanding the details and comprehending the coordination required to achieve the design intent. Photo 1: The new roof drain has been located and the sump pan provided by the roof drain manufacturer has been installed.
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