Gestion Defcor

Commercial Roofing Consultant
in MontrEal

An independent assessment, with no sales pressure.

Protect Your Building Before Water Infiltration Forces Your Hand

Commercial roofs age, crack, and leak — often with no visible warning signs. Gestion Defcor acts as an independent roofing consultant for condominiums, institutions, and property managers in Montreal and across Quebec: precise diagnosis, actionable report, no work to sell.

Our Services

Roof Inspection

Rigorous visual inspection of commercial and institutional roofs, with a documented report and asset tracking for property portfolio managers.

Water Infiltration

Independent diagnosis of water infiltration on commercial flat roofs — identifying the real cause, not just a temporary patch.

Roofing Assessment

An independent roofing assessment for condominiums, institutions, and commercial buildings — a credible report for internal decision-making, negotiation, or legal proceedings.

Project Supervision

Independent quality control during roofing work — rapid detection of non-conformities before they are buried in the system.

Technical Consultation

Independent technical roofing consultation for managers, condominiums, and institutions that want to make better decisions without sales pressure.

Hygrometric Analysis

Specialized analysis to detect moisture trapped beneath flat roofing membranes — precise results, documented report, better-informed decisions.

You have several quotes but no clear answers?

Why Choose Us

Total Independence: No ties to manufacturers or roofing contractors

Technical Advice Without Pressure: Our recommendations aim for the truth, not the sale

Actionable Reports: Clear, detailed, and usable for decisions, insurance, or litigation

Service Areas

  • Greater Montreal
  • South Shore
  • Brossard
  • Longueuil
  • Boucherville
  • Laval
  • Terrebonne
  • Trois-Rivières
  • Montreal–Quebec City corridor
  • Gaspésie

An informed decision starts with the right diagnosis.