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Duct Sealing & Repair Markham, ON

If dust returns soon after cleaning or some rooms receive less air, duct leakage or a damaged section may be worth investigating, alongside other possible causes. In a Markham home, photograph accessible joints, disconnected boots, crushed flexible duct, and the surrounding area before requesting an assessment. Ask whether the inspection distinguishes supply leaks from return leaks and how suspected leaks will be confirmed. The location, material, and accessibility of each defect affect repair scope; request details about fastening and sealing materials.

Questions About the Work

Does dust return soon after cleaning?

A leaking return can draw air from a cavity, while supply damage can reduce delivery. Document visible defects and ask how leaks will be confirmed.

  • Ask How Leaks Will Be Located

    Photograph visible gaps at joints, boots, or duct connections and note nearby renovation work. Ask whether the inspection will test suspected leaks rather than relying only on a visual guess. Confirm which sections are accessible and whether the quote includes inspection, sealing, or repair, since each can involve different work.

  • Distinguish Return and Supply Leaks

    Ask the assessor to identify whether a suspected leak is on the supply or return side and explain its location. If a return draws air from a dusty basement or wall cavity, that condition may deserve particular attention; a supply leak has a different effect. The system layout and evidence determine priorities, not the age or neighbourhood.

  • Compare Repair Materials and Methods

    For accessible metal joints, ask whether mastic and mechanical fastening are proposed instead of general-purpose tape. If flexible duct is crushed or a boot has fallen, request a description of the damaged section and whether replacement is included. Photographs and material details help you compare a lasting repair scope with a temporary surface covering.

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