Reroof bid packages read into one worksheet, with the price left to your estimator.

A reroof package from a school district, a university or a state agency arrives as a stack: roof plans with areas and existing conditions, details, a project manual with the bid form and Division 01 rules, the Division 07 sections, and addenda right up to bid day. Before anyone prices a square, somebody reads all of it and lists what the job demands, because a line nobody noticed becomes a cost nobody carried.

In the proof of concept, AI reads copies of those packages and drafts the requirements sheet: each roof area with its square footage and existing assembly, tear-off or recover, the new system, insulation and R-value, the uplift and fire ratings, the warranty term and type, approved manufacturers and submittals, alternates and unit prices, and the schedule and site rules. Every line names its source page. The sheet carries no price, and nothing is submitted.

Ratings are pressures and listings, not adjectives. In an FM uplift rating such as 1-90, the 90 is pounds per square foot, not miles per hour. The test raises pressure in 15 psf steps until a component fails, the rating is the step before, and FM wants twice the calculated uplift, so a 1-60 assembly covers a field pressure of no more than 30 psf. SPRI notes that FM's wind data sheet is neither part of the building code nor a consensus standard, and it sets a separate rating for each roof zone, from the field to the corners. UL rates roof coverings Class A, B or C for severe, moderate or light fire test exposure from outside the building, and its listing for a roofing system gives the class, the deck type it holds for, any slope limit and the barrier boards or ply sheets it needs. The sheet copies each rating with its zone or deck.

Recover and replacement price differently, and jurisdictions differ. The IBC's reroofing section, 1511 in the 2018 edition and 1512 in the 2021, excuses a recover or a replacement from the quarter-inch-per-foot minimum slope where the roof keeps positive drainage, the 2018 text does the same for adding secondary drains, and a replacement removes every layer down to the deck. Minnesota's adopted version adds secondary drainage for existing roofs whose edges can trap water. Seattle's replacement affidavit applies its energy rule even to roofs that had no insulation, forbids any drop in R-value, lists R-38 continuous above the deck and has the contractor certify what went in; a recover there needs no permit. The sheet records the path, the R-value and the jurisdiction, and offers no code opinion.

Addenda rewrite the scope after the cores come out. Troy University's third addendum to a 2025 reroof, issued after core extraction, took every roof to the deck except one metal area, sorted the steel deck into three treatments by how badly it had deteriorated, set a tapered insulation start thickness at the drains for each roof area, added a unit price for spray foam under the deck with a quantity already in the base bid, and added two acceptable manufacturers. Provo's school district, in a 2021 addendum, made its pre-bid meeting optional and turned new parapet caps into a deduct alternate to reinstall the old ones. The sheet applies the latest addendum to each line and names it.

Site rules are cost as well. New York's state master spec section 07 01 50.19, Preparation for Reroofing, allows no more tear-off in a day than can be made watertight the same day, suggests 72 hours' written notice to the owner, asks for a fastener pull-out test report when the new roof is mechanically fastened, and reminds the designer that asbestos felt was common in old base flashing. A California school district's edited copy set 48 hours' notice, wanted the installer licensed for asbestos abatement, and required the membrane maker's letter if a temporary roof would stay under the new one. Each rule lands on the sheet with its section, so your estimator can price crew days, protection and testing.

What your estimator will check first: areas that don't match the roof plan, a recover where the package calls for tear-off, a rating without its zone or deck, a warranty term that differs between spec and bid form, missing alternates or unit prices, and anything left in an addendum the sheet missed.

Once your estimator says yes, the job runs for about 30 days on new packages as they come in, each sheet ready before the takeoff begins.

Your estimator prices every bid, and your team submits it. Each sheet shows its sources, marks what it couldn't settle and lists conflicts your estimator may raise with the designer before the question deadline.

The live job is signed at a fixed price. Any job after it carries its own price, and monthly support starts when one goes live.