Grimsby conditions that change how roof cleaning is done
Most Grimsby homeowners book roof cleaning for one reason and discover a second problem on the same visit.
Many Grimsby properties were re-roofed at least once without the flashing being re-detailed, leaving a cosmetic seal doing structural work.
Older Grimsby stock was built when soft lime mortar and clay liners were the standard; modern high-efficiency appliances vent very differently, and the mismatch causes condensation the original builder never planned for.
Across Grimsby Mountain, Baker, Livingston, Ridge Road and Kelson, the housing stock changes street by street, and the correct method changes with it. A century home with a soft-brick stack does not get the same treatment as a 2010 build with a factory-built vent — using one method on both is how systems get damaged.
the practical takeaway is that a roof cleaning visit should start with an assessment, not a tool. Any crew that begins work before telling you what they found is guessing on your behalf.

