I work for a housing co-operative in the east end of Toronto which owns a townhouse complex. Contex replaced 6 patio roof membranes in the complex. The work went fairly well and quite quickly, though the quality of work on aluminum siding repairs, needed after the roofing work was done, was not great. And, after the work was completed, one roof leaked at a joint between the new membrane and an adjacent older patio roof.
Contex showed up within a few hours to deal with the leak. In the meantime the co-op organized water damage remediation. The extent of the damage was relatively minor, a corner of the living room below the patio, but it was a real intrusion into the household involving the use of drying equipment, injection of anti-mould compounds, carpet replacement etc. The co-op paid for this work. They asked Contex to pick up the cost of the water damage remediation except for the carpet, as the carpet was old anyway and due for replacement. While Contex's roofer sub-trade showed up on site to repair the damaged drywall ceiling and patch paint, Contex itself, has refused to accept responsibility for any of the water damage costs claimed by the co-op -- about $2,950.