Defect: manufacturer, installer or contractor?

Preserve evidence and distinguish product defect, installation, design, maintenance and consequential damage before destructive repair.

Document triage — not legal/tax advice or a warranty decision. Données vérifiées: 2026-08-23.

VERT / GREEN

Photos, model, invoice, contract and timeline are available.

One problem can involve several parties; avoid selecting one cause too early.

Before dismantling or discarding disputed material, preserve evidence and obtain appropriate authorization/advice when needed.

Cause unclear: product vs installation Urgent repair required Claim refused verbally Responsibility and process documented

Explore: Project risks and overlooked interfaces

This section connects payment, water, envelope, ventilation and jobsite details that often create costly surprises.