Home Seller's Guide: Damper Repair Prep for Bradford West Gwillimbury Listings

What is a chimney damper and does it need to be open or closed?

A chimney damper is a movable plate inside the flue that seals the chimney when the fireplace isn't in use. Open it fully before every fire (or you'll fill the room with smoke), and close it after the fire is completely out and cold (or you'll waste heated air up the chimney all winter).

Why is smoke coming into my house from the fireplace?

Smoke entering the room from a fireplace usually means one of five things: closed damper, cold flue that hasn't warmed up, blocked flue (creosote, animal, or debris), negative pressure in the house pulling smoke down, or a flue that's undersized for the firebox. Diagnosis takes 10 minutes with a smoke pencil.

How much does a chimney sweep cost in Toronto?

A professional chimney sweep in Toronto costs $189 to $349 per flue in 2026. Single wood-burning fireplaces are $189–$249, multi-flue systems run $299–$499, and heavy creosote buildup or first-time cleanings after 5+ years can add $100–$200. All reputable Toronto sweeps quote fixed prices in writing before starting.

How much does chimney repair cost in Toronto?

Chimney repair in Toronto costs $350–$3,200 in 2026 depending on scope. Crown seal is $350–$550, full crown rebuild $900–$2,200, tuckpointing $650–$1,800 per side, liner replacement $1,450–$3,200, and flashing replacement $450–$900. All fixed-price and written before work begins.