Why Is My Flat Roof Leaking Where It Meets a Wall?
A flat roof leaking where it meets a wall is often caused by damaged flashing, deteriorating sealants, failed membrane connections or moisture entering through nearby masonry. Even when the main roof surface appears to be in good condition, water can find its way behind the materials designed to keep the building dry. These leaks can […]
Commercial Roof Leaks Around Rooftop HVAC Units: What Building Owners Should Know
Commercial roof leaks around HVAC units are frequently associated with damaged flashing, deteriorating roofing membranes, poorly sealed penetrations or drainage problems near rooftop equipment. However, water appearing below a rooftop unit can also originate from the HVAC system itself. Identifying the source is essential because a roofing repair will not resolve a mechanical condensate problem, […]
Leaking Skylight Before Winter: Repair, Reflash, or Replace?
A leaking skylight does not automatically need to be replaced. The right solution depends on where the water is coming from, the condition and age of the skylight, the flashing and underlayment around it, the surrounding roofing materials, and whether the moisture is actually a roof leak or interior condensation. For Toronto and GTA homeowners, […]
Do You Need a Permit to Replace a Roof in Toronto?
A roof replacement permit in Toronto is generally not required when the work is limited to replacing existing roofing material and no structural work is required. If the project changes or repairs structural components, alters the roof structure, or expands into other regulated work, permit requirements can change, so the scope should be confirmed before […]
Ponding Water on a Flat Roof: When Is It a Problem?
Ponding water on flat roof surfaces is not automatically an emergency, but water that remains after the roof has had a reasonable chance to drain and dry can signal a drainage or roofing problem. A common industry benchmark is 48 hours after rainfall under drying conditions. If standing water is still present beyond that point, […]
Flat Roof Repair in Toronto: What Affects Cost and How Long It Takes
Flat roof repair in Toronto can be a relatively small job when the damage is isolated, or a much larger project when water has reached insulation, decking, flashing or several areas of the membrane. The cost and timeline depend on what failed, how easy the roof is to access, the roofing system in place, and […]
Roof Repair After A Storm In Toronto: What To Do & Who To Call
Roof repair after a storm in Toronto should start with safety, not with climbing a ladder. Heavy rain, high winds, falling branches, hail, and fast temperature changes can damage shingles, flashing, flat roof membranes, skylights, gutters, and roof edges. Some damage is obvious right away. Other issues only become visible after the next rainfall. If […]
Common Causes Of Roof Leaks In Toronto & How To Fix Them
Roof leaks in Toronto can start with something small, like a faint ceiling stain, a damp attic smell, or a few drops of water after heavy rain. The problem is that the leak may have been developing for much longer than it appears. Water can enter at one point, travel along decking, insulation, rafters, or […]
Spring Roof Inspection Checklist For Ontario Homes: What Winter May Have Left Behind
By the time spring arrives in Ontario, your roof has already done months of heavy lifting. Snow, ice, wind, freeze-thaw swings, and blocked drainage paths all leave their mark, even when there is no obvious leak inside the house. That is why spring is one of the best times of year to take a hard […]
Ice and Water Shield in Ontario: The Winter Upgrade That Prevents Ice Dam Leaks
If you have ever dealt with icicles along the eaves or a leak that appears only during melts, you already know how unforgiving a Toronto winter can be. One of the best protective upgrades for many roofs is ice-and-water shield, especially at vulnerable edges and valleys. If you are researching this option, Dominion Roofing’s ice […]
