Your last line of defense
before you submit
BidShield is a pre-submission bid review platform that systematically checks every commercial roofing bid for scope gaps, addenda, mechanical items, and spec compliance — before it leaves your desk.
What you actually do in BidShield
The workflow from project setup through bid submission.
Create a project
Enter project name, GC, bid date. Upload your bid documents — plans, specs, addenda, RFIs. BidShield extracts key info automatically.
Set up roof assemblies
Define the roof systems you're bidding (TPO, PVC, EPDM, etc.). BidShield analyzes specs and suggests assemblies based on project requirements.
Run document review phases
Work through 18 phases as you build your bid: Architectural Review (parapets, access), Structural (deck, slopes), Mechanical (curbs, drains), Plumbing, Electrical, Civil/Site, Specifications, Addenda.
Input your takeoff quantities
Enter SF, linear footage, and counts from your takeoff. BidShield cross-references against drawings and flags discrepancies.
Run scope gap check
AI scans your documents and bid against 40 common scope gaps: mechanical curbs, edge metal systems, drain compatibility, expansion joints, warranty scope, liquidated damages.
Review your readiness score
See your 0–100 bid readiness score. Know exactly what's complete and what still needs attention before submission.
Export and submit
Generate a PDF summary of your review checklist. Submit your bid with confidence.
Core features
What makes BidShield different from a spreadsheet checklist.
AI-Powered Scope Gap Detection
Upload your plans and specs. AI scans for 40 common scope gaps — mechanical curbs, edge metal, drain compatibility, expansion joints, warranty scope language, liquidated damages clauses.
Uses Claude Sonnet 4 to analyze PDFs and cross-reference against your bid setup.
Takeoff Reconciliation
Enter your SF quantities. BidShield extracts area callouts from drawings and flags discrepancies. Catches transposition errors and missed sections before submission.
Vision AI reads plan callouts and compares against your entered takeoff.
Addenda Cross-Reference
Upload addenda as they arrive. BidShield tracks what changed and prompts you to update affected phases. Never miss an addendum item buried on page 6.
Extracts changes and maps them to relevant bid phases automatically.
18-Phase Review Checklist
Systematic review from project setup through bid submission. Each phase has 5–8 specific check items. Track completion in real-time with a 0–100 readiness score.
Based on 12 years of commercial roofing estimation experience.
Spec Analysis
AI extracts submittal requirements, warranty scope, and liquidated damages clauses from Division 07 specs. Flags non-standard requirements before you price.
Parses CSI format specs and highlights deviations from standard scope.
System Substitution Preferences
Set your preferred roof system substitutions once. BidShield auto-suggests when spec assemblies match your substitution rules (e.g., always sub Hydrotech for generic IRMA).
Learns your business preferences and applies them across all projects.
By the numbers
Review phases
Check items
AI scope gap checks
Review time per bid
When to use BidShield
✓ Use BidShield for:
- • Public bids (schools, municipalities, government)
- • Large commercial projects ($500K+)
- • Multi-building or phased work
- • Projects with 3+ addenda
- • Junior estimators learning the ropes
- • Any bid where missing scope = back-charge risk
○ Maybe skip for:
- • Emergency repairs (same-day turnaround)
- • Tiny service work (<$10K)
- • Repeat clients with standard scope
- • Bids you\'re not serious about winning
That said, even a 5-minute scope gap check on a small bid can save you from a costly miss.
Try it on your next bid
14-day free trial. No card required. One prevented scope gap pays for months.