Now Open · Free Trial · Commercial Roofing Estimators

Submit Every Bid
With Confidence.

BidShield is the last thing you do before a bid goes out. AI-powered scope verification, addenda tracking, and a systematic preflight checklist, so nothing gets missed on deadline day.

No credit card. No commitments. Start free today.

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5
Preflight Phases
95+
Checklist Items
12yr
Field Experience

What BidShield Covers

The bid QA tool that catches scope gaps and roofing takeoff mistakes before they reach the GC. 17 phases, every discipline, every item.

Phase 05 — Mechanical Review

Mechanical Plan Review

Every curb, equipment support, and dunnage verified against the plan set before takeoff. Quantities reconciled phase-by-phase, not at submission.

18phases covered start to finish
Phase 10 — Addenda Review

Addenda Tracking

Every addendum logged, reviewed for scope impact, and confirmed incorporated before submission. No addendum slips through unreviewed.

100%addenda accountability
Phase 09 — Specification Review

Specification Review

Spec sections reviewed for submittal requirements, special inspections, and compliance items that affect your scope and final cost.

135checklist items

The 18-Phase Bid Checklist

From project setup to bid submission. Click any phase to see what's covered.

135
total checklist items
  • Confirm project scope and contract type
  • Document project address and contacts
  • Verify bid date and submission requirements
  • Set up folder structure in BidShield
  • Confirm full plan set received
  • Log spec book and addenda list
  • Verify project scope sheet
  • Note any missing documents
  • Review roof plan for scope boundaries
  • Confirm drain locations and roof slopes
  • Check parapet heights and details
  • Note penetrations and curb counts
  • Review structural drawings for deck type
  • Identify steel joist vs concrete deck zones
  • Check for existing insulation notes
  • Confirm structural blocking requirements
  • Count mechanical curbs and equipment
  • Verify curb heights vs spec requirements
  • Check equipment support dunnage
  • Confirm screened enclosure scope
  • Count roof drains and overflow drains
  • Verify interior drain connection scope
  • Check area drain locations
  • Confirm sump pan requirements
  • Identify conduit penetrations
  • Note electrical equipment pads on roof
  • Check lightning protection scope
  • Verify solar prep requirements
  • Review site access restrictions
  • Note crane pad or staging area limits
  • Check DOT lane closure requirements
  • Confirm laydown zone availability
  • Review Division 07 spec sections
  • Confirm submittal and mock-up requirements
  • Check special inspection requirements
  • Note warranty requirements and exclusions
  • Log all addenda received
  • Review each addendum for scope changes
  • Confirm pricing impacts are incorporated
  • Mark all addenda as confirmed
  • Measure all roof field areas by zone
  • Calculate insulation area separately
  • Verify total area against plan dimensions
  • Note area overlaps or exclusions
  • Measure perimeter linear feet
  • Count fascia and gutter linear footage
  • Measure expansion joint linear footage
  • Verify edge metal types and quantities
  • Count all penetration flashings
  • Tally drain flashings and covers
  • Count access hatches and skylights
  • Verify misc item counts vs plan
  • Enter material quantities from takeoff
  • Upload supplier quotes for AI extraction
  • Reconcile material prices vs quotes
  • Flag any pricing discrepancies
  • Enter labor hours by phase
  • Run AI scope analysis for labor check
  • Verify labor burden and payroll taxes
  • Confirm subcontractor labor scope
  • Document sub scope inclusions
  • Confirm exclusions and by-others items
  • Verify sub pricing is locked
  • Log any sub clarifications needed
  • Run full bid summary validation
  • Check $/SF against benchmarks
  • Confirm all qualifications are written
  • Verify alternates and unit prices
  • Confirm GC bid form is complete
  • Attach all required exhibits
  • Submit before deadline with confirmation
  • Log bid result and feedback

Real Estimators. Real Results.

Commercial roofing estimators running BidShield on live bids.

"Finally a tool that matches how I actually run bids. The phase-by-phase checklist catches everything I used to track on sticky notes. Haven't missed a line item since."

MR
Mike R., Project Estimator
Summit Roofing, Denver

"Material Reconciliation alone is worth the subscription. I caught a $14k discrepancy on a TPO re-roof before it hit the GC's desk. That's real money saved on one job."

JT
Jason T., Senior Estimator
Apex Commercial Roofing, Houston

"I run every bid through BidShield now. The pre-submission validator flags things I'd never catch under deadline pressure. It's the QA process I always needed."

DL
Dana L., Estimating Manager
Ridgeline Contractors, Atlanta
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We're inviting a small group of commercial roofing estimators to help shape BidShield before public launch. Early access is free.

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Be first in line when BidShield opens. We're working with a small group of estimators before public launch — if that's you, request your spot.

Submit Every Bid With Confidence.

Scope gaps, missed addenda, unresolved RFIs — BidShield catches them before your number goes out the door. Try BidShield free — no credit card required.

No credit card · No commitments · Early access is free