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Fire-Risk Map · 2026 · Cambridge

Cambridge Dryer Vent Fire-Risk Map

TL;DR

In Cambridge, three vent configurations account for the majority of dryer-related fires: (1) flex-foil transition ducts over 8 ft, (2) any run over 25 ft with more than two 90° elbows, and (3) rooftop terminations without a proper backdraft damper. Cleaning + code-legal rebuild runs $189–$650. Same-week booking across Cambridge.

Call (437) 475-3344

Why Cambridge homes are high-risk

Ontario Building Code 6.3.4 caps a dryer duct at 7.5 m equivalent length (each 90° elbow counts as 1.2 m). Most $Cambridge townhouses and infill semis exceed that by design — the laundry is buried in a mid-house closet with a 30-ft run to the exterior wall. That's a lint trap by geometry.

Add flexible foil ("slinky") transition duct — technically illegal under CAN/CSA — and you get the exact setup behind ~2,900 dryer fires a year in North America (NFPA).

Warning signs (any one = book a service)

  • Clothes take more than one cycle to dry.
  • Dryer top or laundry room feels hotter than normal at end of cycle.
  • Burnt-lint smell during operation.
  • External vent hood flapper doesn't open, or lint visible on siding around it.
  • Last cleaning was over 12 months ago.

Cambridge pricing (2026)

  • Standard clean (up to 15 ft, ground floor): $189
  • Long run / townhouse clean (up to 30 ft): $259–$329
  • Rooftop termination clean: $349–$459
  • Full code-legal rebuild (rigid smooth-wall, sealed joints): $650–$1,400
  • Booster fan install (runs over 25 ft): $450–$780

Our code-legal rebuild spec

  • Rigid galvanized 4" smooth-wall duct — no foil, no vinyl.
  • All joints sealed with UL-181 foil tape (not sheet metal screws — screws catch lint).
  • Minimum 45° elbows where possible; each 90° counted against total length.
  • Backdraft damper at termination, birds/rodent screen on hood only if code-approved (¼" mesh maximum).
  • End-user reset card left at the appliance with duct length and cleaning interval.

Neighborhood-by-neighborhood in Cambridge

Different Cambridge building types drive different vent failures. Below: risk profile and typical fix per neighborhood.

Cambridge

Galt

  • Dominant build type in Galt: townhouse / semi — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Galt: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Galt; emergency (no dry / overheat) same-day.
Cambridge

Preston

  • Dominant build type in Preston: post-war bungalow — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Preston: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Preston; emergency (no dry / overheat) same-day.
Cambridge

Hespeler

  • Dominant build type in Hespeler: townhouse / semi — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Hespeler: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Hespeler; emergency (no dry / overheat) same-day.
Cambridge

West Galt

  • Dominant build type in West Galt: post-war bungalow — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in West Galt: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across West Galt; emergency (no dry / overheat) same-day.
Cambridge

East Galt

  • Dominant build type in East Galt: modern infill 2-storey — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in East Galt: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across East Galt; emergency (no dry / overheat) same-day.
Cambridge

Blair

  • Dominant build type in Blair: 1½-storey detached — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Blair: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Blair; emergency (no dry / overheat) same-day.
Cambridge

Doon

  • Dominant build type in Doon: townhouse / semi — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Doon: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Doon; emergency (no dry / overheat) same-day.
Cambridge

Riverside

  • Dominant build type in Riverside: modern infill 2-storey — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Riverside: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Riverside; emergency (no dry / overheat) same-day.
Cambridge

Preston Heights

  • Dominant build type in Preston Heights: post-war bungalow — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Preston Heights: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Preston Heights; emergency (no dry / overheat) same-day.
Cambridge

Fiddlesticks

  • Dominant build type in Fiddlesticks: modern infill 2-storey — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Fiddlesticks: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Fiddlesticks; emergency (no dry / overheat) same-day.
Cambridge

Beaverdale

  • Dominant build type in Beaverdale: post-war bungalow — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Beaverdale: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Beaverdale; emergency (no dry / overheat) same-day.
Cambridge

Silver Heights

  • Dominant build type in Silver Heights: modern infill 2-storey — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Silver Heights: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Silver Heights; emergency (no dry / overheat) same-day.
Cambridge

Southwood

  • Dominant build type in Southwood: townhouse / semi — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Southwood: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Southwood; emergency (no dry / overheat) same-day.
Cambridge

Christopher Champlain

  • Dominant build type in Christopher Champlain: townhouse / semi — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Christopher Champlain: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Christopher Champlain; emergency (no dry / overheat) same-day.
Cambridge

Bridgeport

  • Dominant build type in Bridgeport: 1½-storey detached — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Bridgeport: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Bridgeport; emergency (no dry / overheat) same-day.
Cambridge

Highland Park

  • Dominant build type in Highland Park: modern infill 2-storey — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Highland Park: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Highland Park; emergency (no dry / overheat) same-day.
Cambridge

Elgin Park

  • Dominant build type in Elgin Park: modern infill 2-storey — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Elgin Park: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Elgin Park; emergency (no dry / overheat) same-day.
Cambridge

Alison

  • Dominant build type in Alison: 1½-storey detached — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Alison: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Alison; emergency (no dry / overheat) same-day.
Cambridge

Blackbridge

  • Dominant build type in Blackbridge: 1½-storey detached — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Blackbridge: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Blackbridge; emergency (no dry / overheat) same-day.
Cambridge

Central Preston

  • Dominant build type in Central Preston: townhouse / semi — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Central Preston: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Central Preston; emergency (no dry / overheat) same-day.
Cambridge

Franklin

  • Dominant build type in Franklin: modern infill 2-storey — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Franklin: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Franklin; emergency (no dry / overheat) same-day.
Cambridge

Blair Road

  • Dominant build type in Blair Road: townhouse / semi — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Blair Road: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Blair Road; emergency (no dry / overheat) same-day.
Cambridge

Cambridge Centre

  • Dominant build type in Cambridge Centre: post-war bungalow — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Cambridge Centre: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Cambridge Centre; emergency (no dry / overheat) same-day.
Cambridge

Speedsville

  • Dominant build type in Speedsville: townhouse / semi — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Speedsville: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Speedsville; emergency (no dry / overheat) same-day.
Cambridge

Lang

  • Dominant build type in Lang: 1½-storey detached — average vent run 18–32 ft.
  • Most common failure: flex-foil transition + over-length rigid, no booster fan.
  • Typical service in Lang: full clean + rebuild first 6 ft in rigid smooth-wall.
  • Same-week booking across Lang; emergency (no dry / overheat) same-day.

FAQ — Dryer Vent Risk in Cambridge

How often should I clean my dryer vent in Cambridge?+

Annually for single-family homes, every 6 months for townhouses with long runs, and every 3 months for shared-stack condo buildings.

Can I DIY this?+

You can vacuum the lint trap housing safely. Full duct cleaning requires a rotary brush kit and access to the roof or exterior termination — not a homeowner job in most Cambridge configurations.

Do you handle rooftop terminations?+

Yes — fully insured, safety-tied, WSIB-covered. Rooftop cleans are our specialty on Cambridge townhouses and infill homes.

Will my landlord/condo cover this?+

In-suite vents are almost always tenant/owner responsibility. Vertical stacks in condo buildings are common-element and covered by the condo corporation.

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