A school roof has about ten weeks to get done, and the bid has to be written backward from the first day of class. Material lead times, board approvals, permit review and the weather all eat into that window before a crew sets a foot on the deck. In Coeur d'Alene, ID, where the city requires ice barrier underlayment, the roof also has to be ready for January the moment the students walk back in.
Districts bid roofs as public work, so the document the board sees is the one that matters. We write the scope with a base bid and clearly numbered alternates, so the board can award the roof it needs and add the extras it can afford. Each alternate has a price, a reason and a deadline for the decision, since a late yes on an alternate can push a material order past the summer.
Schedule and Snow Window: Ten Weeks, Backward
The sequence starts in winter or early spring. The district names the buildings, we survey them, the board approves the scope, and the materials are ordered while the snow is still on the ground. By the time classes end, the membrane, insulation and edge metal should be in the yard, not on a truck. A school that waits until June to order can lose three weeks of the window to lead time, and a late-season finish means the last buildings go on in cooler weather, when adhesives are slow and seams need more care. The district pays for that delay in either quality risk or an extended contract, so the early order is the cheapest line in the whole project.
Once the crew mobilizes, the work runs building by building, with the largest and most critical roofs first. The goal is a dry roof on every building before staff come back in August. Teachers return a week or two before students, and a ceiling stain on that first morning is the call the facilities director dreads. We schedule the finish of each building at least a week ahead of that date, so punch-list items and a final walk fit before anyone opens a classroom. We hold a buffer for rain delays and mark the hold points where the facilities director walks the roof with us.
What It Costs: Bid Lines a Board Can Read
Public bids need to compare cleanly, so we keep the lines plain. Tear-off and disposal. Insulation, in R-value and thickness. Membrane and fastening. Drains, scuppers and overflow. Edge metal and coping. Curbs and penetrations. Mobilization and safety fencing. A board member who reads the sheet can see where a number comes from.
The big swing is usually recover versus tear-off, and the second swing is how the roof meets the walls, since a school's tall gym walls and brick parapets take more flashing than a plain field of membrane. Many school roofs carry layers from earlier projects, and a roof with two layers already cannot take a third under most codes. When a moisture survey shows wet insulation, tear-off is the answer, and the district should expect it in the base bid. When the roof is dry, a recover over a cover board can save the district a meaningful part of the budget, and the savings can fund the alternates.
Where It Fails First: Gym Roofs, Entries and Covered Walks
School campuses mix roof types. The classroom wings are usually low-slope. The gym and cafeteria are taller, with their own drainage problems and parapet walls that collect drifts. Covered walkways connect them, and the entries get the most foot traffic and the most snow sliding off the main roof above.
The Coeur d'Alene School District is the second-largest employer in Kootenai County, and the Post Falls School District is among the top employers in Post Falls. A public owner of that size cannot reroof everything in one summer, so a roof assessment ranks buildings by risk and spreads the replacements across several summers. The gym roof with the ponded corner usually goes first. A college faces the same planning question on a larger scale, which is why a district and a campus both benefit from a ranked list before the first bid goes out. A ranking works because it turns a vague worry about aging roofs into a short list with a budget attached, and the board can fund the first two or three buildings and defer the rest with a reason on record.
What the Code Sheet Says: Snow and Student Safety
The city sheet pairs its 60 psf snow design with Seismic Design Category C and severe weathering. Snow behaves in a way that matters at a school: wet snow is dense, and a roof above an entry can drop a slab onto students at dismissal.
Post Falls, on the Rathdrum Prairie, averages about 59 inches of snow a year, and the prairie also holds Hayden and Rathdrum, so a school roof anywhere on it spends the winter under that kind of snow. That is why snow guards or a drift layout over entries and walkways are part of the school conversation, not an upsell. Under the statewide 2018 energy code, a replacement roof must meet the current insulation requirement. We show that as its own line, with the code edition named, so the board sees the reason.
Alternates: What the Board Can Add
Alternates are how a district stretches a fixed budget:
- A second building added to the same mobilization
- Snow guards over entries and walks
- Added insulation beyond the code minimum
- Walkway pads to rooftop units
- A longer manufacturer warranty term
- Roof drain upgrades at the low points
The second building is often the best value, since mobilization is paid once. Fencing, a lift, a dumpster and the crew's first day are all the same cost whether the crew roofs one building or two on that visit. A board that can add a second roof at the same unit price saves more than any single product choice.
Closeout: Records the District Keeps
At closeout the district receives the roof plan for each building, the warranty documents, the as-built details and dated photos. That record goes into a roof capital plan, which lets the board schedule the next roofs without surprise, and a roof condition report ranks every building. A district with many sites can spread the work across summers through a multi-site roof program. The bid steps above are the ones school districts already use, and a college campus or any other public building buys much the same way. TPO is a common choice, and schools in Post Falls and Coeur d'Alene can start with a survey.
Commercial Roofing Questions
Can a school be reroofed during the school year?
Small repairs, yes. A full replacement belongs in the summer. Noise, fencing and equipment on the grounds are hard to manage with students present.
How many layers can a school roof carry?
Most codes stop at two. A roof that already has two layers needs a tear-off before a new system goes on.
What happens if the summer window slips?
We dry in each building as it opens, so a delay pushes the finish date and not the exposure. Late-season work needs a cold-weather plan for adhesives.
Do public bids limit the alternates?
Alternates must be listed in the bid documents. We number them so the board can accept any combination before the award.
Do snow guards belong over school entries?
Over doors where students line up, yes. A sliding slab is a safety problem, and a guard is cheaper than the incident.