Why roof cleaning works differently in Peterborough
Nearly every urgent roof cleaning call we take in Peterborough began as something a homeowner noticed months earlier and reasonably decided to watch.
Older Peterborough 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.
Air-sealing and window upgrades have made Peterborough homes far tighter than they were designed to be, and a tight house starves a natural-draft appliance of the make-up air it needs.
Across Downtown Peterborough, Avenues, Chemong Park, Kawartha Heights and Trent, 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.
If you live anywhere near the Peterborough Lift Lock, 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.