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Roof replacement scope and bid comparison checklist

An apples-to-apples US roof replacement bid checklist for roof measurements, tear-off, decking allowances, shingles and system accessories, flashing, ventilation, permits, cleanup, warranties, schedule, and payment terms before contractor selection.

6 items to check

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Every proposal prices the same roof areas, slopes, structures, and replacement limits

Critical item

A meaningful comparison should use the same buildings, roof planes, measured area, slope and access assumptions, number of existing layers, tear-off limits, detached structures, low-slope transitions, and completion standard.

Tear-off, disposal, temporary dry-in, and property protection are explicit

Critical item

The proposal should state whether existing roofing is removed or overlaid, which materials and layers are removed, how exposed work is protected from weather, and who handles dumpsters, disposal, permits, landscaping protection, magnetic cleanup, and damage restoration.

Shingles and all required roof-system components are identified

Critical item

A roof proposal should name the roof covering and compatible starter, ridge or hip cap, underlayment, ice barrier where applicable, drip edge, flashings, pipe boots, sealants, fasteners, ventilation products, and warranty level rather than listing shingles alone.

Decking inspection, replacement pricing, and hidden-condition approval are comparable

Critical item

Because roof sheathing condition is often confirmed only after tear-off, the contract should define what condition requires repair, the approved material and thickness, unit pricing or pricing method, photo evidence, authorization, and any structural escalation.

Flashing, ventilation, permits, inspections, and adjacent interfaces are included or excluded clearly

Critical item

The proposal should define treatment of valleys, walls, chimneys, skylights, penetrations, kickout flashing, gutters, siding interfaces, intake and exhaust ventilation, permits, inspections, and any design or trade work that the roofer will not provide.

Schedule, supervision, payment milestones, warranties, and total risk are normalized

Critical item

Selection should consider realistic start and duration, crew and supervisor, weather delays, material availability, inspections, payment tied to delivered value, workmanship warranty, manufacturer warranty, exclusions, transfer terms, and contractor reliability—not only the lowest total.

Use this checklist after receiving written roof proposals and before selecting a roofing contractor. In the United States, owners commonly request multiple written proposals, compare the same roof system and scope, verify the contractor separately, then move the selected proposal into a signed contract. This page compares roof-specific scope; licensing, insurance, references, and general contract terms have separate checklists.

Reference standards

  • Approved plans and specifications, adopted state and local building code, permit and inspection conditions, authority having jurisdiction requirements, selected roof-system manufacturer installation instructions, and the signed contract
  • Federal Trade Commission home-improvement guidance and National Roofing Contractors Association consumer guidance for contractor selection, written proposals, insurance, warranties, and payment control
  • Roof covering, underlayment, ice-barrier, flashing, ventilation, accessory, and warranty requirements for each proposed manufacturer system
  • Tools

  • One owner-issued roof scope or comparison worksheet used for every bidder
  • Roof plan, measurement report, attic observations, leak history, photos, and known insurance or lender requirements
  • Every proposal, product data sheet, warranty option, schedule, payment schedule, and written clarification