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For Attorneys · Plaintiff & Defense

An expert opinion built on thousands of tests, not a résumé.

Jimmy Cruz spent his career inside an accredited fenestration test laboratory, running the exact ASTM and AAMA protocols at issue in construction-defect litigation. He knows what the standard requires, how the test must be run, and what the results do — and don't — prove.

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Engagement Types

Where he fits in your case

Pre-Suit Evaluation

Before filing: does the evidence support a product defect, an installation defect, or neither? An early technical read that can save a case — or stop a weak one.

Testing Expert

Designs and executes the test protocol (ASTM E1105, E783, AAMA 502/511), documents everything, and produces the data the case turns on.

Rebuttal & Oversight

Reviews opposing experts' protocols and reports for deviations from the standard; observes their site testing so shortcuts get on the record.

Testifying Expert

Expert reports, declarations, deposition, and trial testimony — technical findings explained so a jury follows them.

Why It Holds Up

Cross-examination favors the expert who has done the work

Common attack lines against fenestration experts — and why they don't land here:

"Have you ever actually run this test?"

Yes — for years, in an accredited laboratory and in the field, as the technician of record. [confirm role/title at FTL]

"You deviated from the standard."

Protocols are designed to the letter of the governing document, with calibration records and deviations (if any) disclosed and justified in the report.

"You're a hired gun."

Independent practice, no manufacturer affiliations, and a track record of telling clients when the evidence doesn't support their theory.

Typical Matters

Case types

  • Water intrusion & resulting damage (single-family through multi-family/commercial)
  • Window and door product-defect claims
  • Installation-defect and flashing/integration disputes
  • Stucco/cladding interface failures at fenestration
  • Warranty and certification (NAFS label) disputes
  • Insurance claims: cause-and-origin of moisture damage

How an engagement runs

Conflict check & case review

Confidential review of the technical record before commitment.

Protocol & testing

Standards-based testing with complete documentation, or oversight of opposing testing.

Report

Findings tied explicitly to the governing standard's language.

Deposition & trial

Clear, non-evasive testimony; demonstratives that make the physics legible.

[Add when available: CV download link, fee schedule note, prior testimony list per FRCP 26 — from Jimmy]

Have a window case?

Initial case discussions are confidential and without obligation.

Discuss a Case