Roofing for School Districts, Colleges, and Research Buildings Around Washtenaw County
Ann Arbor Public Schools, the community college and university-adjacent instructional buildings, and the research and lab space clustered along the Plymouth Road and State Street corridors all carry flat and low-slope roof stock built to survive Michigan freeze-thaw cycles on a bond-cycle or capital-plan budget, not an open checkbook. We build the assembly to match the building's real load path and moisture history, and we schedule the work around an academic calendar instead of around ours.
Bond-Cycle Reroofing on a Summer Deadline
K-12 districts in this area , Ann Arbor Public Schools, Saline Area Schools, Dexter Community Schools, Chelsea School District, Ypsilanti Community Schools , fund roof replacement out of sinking fund millages or bond referendums that get earmarked building by building, sometimes years apart. A lot of the roof stock on 1960s and 1970s additions is original built-up roofing or a modified bitumen recover from decades ago, with wet insulation showing up on infrared scans long before anyone budgeted for it. Tear-off and dry-in on a school roof has one real deadline: students back in the building in late August. We size crew counts and material delivery schedules to hit that window, and we build in a contingency plan for the Michigan summer thunderstorm that shows up mid-tear-off with no warning.
Phased sequencing matters more on a school building than almost anywhere else. If the gym roof and the classroom wing roof are both due, we don't open both at once. We keep occupied sections weathertight and dry through the whole project, section by section, so a rain event on day six doesn't turn into a ceiling tile problem in a room that's still in use.
Lab and Research Building Assemblies: Vapor Retarders and Rooftop Penetrations
Instructional and research buildings along the Plymouth Road, State Street, and Green Road corridors carry a different roof problem than a classroom wing: dense rooftop mechanical. Air handlers, fume hood exhaust stacks, emergency generator flues, and specialty lab exhaust all punch through the membrane, and each penetration is a place the assembly can fail first. We detail curb flashing to shed water past the penetration rather than around it, and we watch thermal bridging at those curbs closely , a cold spot at a poorly insulated curb is where condensation forms inside a vapor retarder assembly, and that shows up as a ceiling stain two floors down long before anyone traces it back to the roof.
R-value stacking on these buildings has to answer to two things at once: snow load and structural deck rating. A lot of the older lab buildings in this area weren't engineered for the tapered insulation depths that current energy code assumes, so we run the numbers on dead load before we spec a taper package, not after.
Snow Load, Ice Dams, and Membrane Chemistry for Flat Institutional Roofs
Washtenaw County gets real freeze-thaw cycling, and a flat institutional roof holds snow and meltwater in ways a pitched residential roof never does. Membrane choice matters here: TPO's heat-welded seams hold up well through repeated freeze-thaw without the seam creep you can get on an older adhered EPDM, though EPDM's low-temperature flexibility still has a place on buildings where movement joints are a bigger factor than seam count. PVC earns its keep on buildings with rooftop-mounted grease or chemical exposure, which shows up more than people expect near culinary programs and chemistry labs.
Fastening pattern density gets bumped up on buildings with exposed, open perimeters , a lot of campus buildings sit with nothing blocking wind on one or two sides, and a stock fastening pattern designed for a sheltered suburban box will under-perform in a corner uplift zone here. Tapered insulation to eliminate ponding is worth the upfront cost on any building where meltwater has been forming ice dams at parapet walls; that ice is what tears flashing loose, not the initial snow load.
How We Work With Facilities and Purchasing Departments
Public and higher-ed procurement in Michigan runs on its own rules, and we build our submittals to match them the first time instead of after a rejected pass. Public K-12 construction over the state's competitive-bid threshold requires a sealed bid process, prevailing wage applies on publicly funded work, and a lot of districts and institutions post opportunities through the MITN bid network rather than taking a phone call. A submittal package that a purchasing department will actually accept includes product data sheets, no-dollar-limit warranty documentation from the membrane manufacturer, safety data sheets, and a current certificate of insurance with the coverage limits and bonding a public entity requires.
We don't claim any particular campus or district as a client here , we're describing how the process works because getting the paperwork right the first time is often the difference between a facilities director calling us back and a bid getting kicked for a missing form.
- Fall protection anchor plans routed around passing-period foot traffic, not through it
- Torch-work and generator noise restricted to windows that don't conflict with instructional hours or occupied labs
- Crane picks and material staging coordinated with loading docks, visitor parking, and the campus event calendar
- Dust and welding-fume control kept away from lab and kitchen air intakes
- A same-day dry-in plan for every section opened, in case an overnight storm moves in before the crew is back
- Badge and background-check paperwork handled ahead of mobilization, not the morning crews show up
Matching the Deck to the Budget Cycle
Most districts and departments aren't reroofing an entire campus in one mobilization. We work from core cuts and infrared moisture scans to figure out which roofs actually need a full tear-off versus which ones are dry enough underneath to take a recover system, and we lay that out as a multi-year sequence tied to the capital plan instead of a single expensive number that competes with every other line item in the budget.
Questions Facilities Directors Ask Before They Call
Can you sequence the work so only unoccupied wings are open at a time?
Yes. We plan tear-off in sections sized to what we can dry in before the next work shift, and we keep occupied areas fully weathertight through the whole project rather than opening more roof than we can close in a day.
What happens if a thunderstorm hits mid-tear-off?
Every section we open has a same-day dry-in target. If weather is closing in faster than the forecast said, we prioritize temporary protection over finishing the day's square footage.
Do you build the bid package to our purchasing department's format?
We build submittals around what a public procurement office actually needs , product data, NDL warranty terms, safety data sheets, and current insurance and bonding documentation , formatted the way your department requests it.
How do you protect rooftop lab exhaust and air intakes during membrane welding?
We map every rooftop intake and exhaust point before mobilization and route hot work and welding fumes away from them, adjusting the sequence if wind direction changes mid-day.
Will a recover system work on our older built-up roof, or do we need a full tear-off?
That depends on what the core cuts and infrared scan show. Dry insulation under an otherwise sound membrane can often take a recover; wet insulation anywhere in the field means tear-off, because a recover over wet insulation just traps the problem under a new layer.