Large FM Global Roof Replacement
We replaced this old EPDM roof with a new TPO roof. This roof had to meet FM Global standard so extra detail was required in using a more intensive fastening pattern that varies on different parts of the roof due to the uplift pressure at those points. All specifications and material were approved by FM Global.
We began by removing the existing EPDM membrane and wood fiber coverboards and edge metals. The edge metal was recycled. Some of the tectum decking had to be replaced before installing the new insulation and roof membrane.
The installation began with new 1.5” polyiso R value (R-8.6) mechanically fastened per FM Global Assembly# 370904-0-0 and manufacture specifications. Tapered insulation was used to properly sump the new retro-fit drains and cast aluminum strainers. Tapered crickets were added upslope of the curbs and HVAC curbs to reduce ponding water. All vent pipes were extended as code requires to sit 8” above the finished roof deck. The rubber membrane was then installed. We then fully adhered with bonding adhesive Carlisle white 60 Mil TPO roof membrane.
The finishing touches were new 6” tapered edge boards to direct water away from roof edges, Snap Edge Fascia that meets ANSI/SPRI ES-1 specifications, and heavy duty 22-gauge continuous cleats with color matched concealed splice plates to create watertight joints that allow for thermal expansion and contraction. Walk pads were also added at each roof access point and at HVAC units.
The Client now has a new TPO roof with 20 year Carlisle material warranty and a 2 year workmanship warranty from WNC Roofing. Our partnership will continue as we are their first call for any roofing issues.
The Maintenance Manager sent us this kind review after the job was done:
I wanted to thank you for helping to make my first big project as Maintenance Manager here at MAI a success. David was great to work with and he always found a way to make things go smoothly even when there were issues. He had great communication skills and listened when I had concerns throughout the project. I also enjoyed having Michael on-site. He was always helpful, and he worked on the roof for hours in the rain when we were having leaks. I thought he had left after our meeting to show him where the leaks were. Later that afternoon he called to say they had just finished up fixing the leaks. I didn’t expect him to work on it immediately, especially with it raining- but he jumped right in and the roof did not leak after he was done. I also wanted to thank you for being on-site and making sure the weekend Debox issues were fixed. It really was refreshing knowing you were just as concerned about it as we were- and giving it the appropriate level of urgency. If we have any more roofing needs I will definitely be reaching out!
We are grateful for the chance we got to work with our long time client on this job as one maintenance manager was retiring and another one was starting. We will be going back out for continued maintenance and look forward to helping others with similar FM Global roofing needs.
See some of the pictures of the project below.
Before and During Replacement
Finished FM GLobal Roof Replacement
