Service areaWest Markham
Thornhill (Markham side): Neighbourhood Notes
East of Yonge Street, the Markham side of Thornhill holds 1960s and 1970s family homes, ravine lots along the Don and a historic village core on old Yonge.
Tilt-shift aerial photo of a suburban neighborhood with green lawns and roads.
- Plumbers who know the pipes under Thornhill (Markham side) homes
- Drains, leaks, water heaters and sump pumps handled
- Talked to the shut-off on the phone if water is running
- Call-only: no forms, no call-back queue
- Licensing details confirmed when you call
- Residential
- Commercial
- Markham & York Region
Typical plumbing faults in local homes
- Original copper supply with pinholes and green corrosion.
- Cast-iron stacks and drains with rust and leaks.
- Clay sewer laterals invaded by roots.
- Kitchen and bathroom lines on outside walls freezing.
- Old gate valves that no longer shut off.
About this part of Thornhill
Thornhill straddles the border between Markham and Vaughan, with Yonge Street as the dividing line. The Markham side includes the heritage village core near Centre Street and John Street, neighbourhoods like Royal Orchard and Grandview, and areas near the East Don ravine. Many homes are 50 years old or more, with spacious lots and mature trees.
Ravines and roots
The trees that make these streets lovely also grow aggressive roots. Older laterals with joints every few feet invite them. When the floor drain overflows on a yearly cycle, a camera can show where roots get in and whether a spot repair or lining makes sense.
Older renovations
Many homes here were renovated in the 1980s or 1990s. Some of that work used materials now known to fail, such as early plastic supply lines. If you see grey plastic pipe with fittings marked PB, ask us to look at it.
From the van: On older ravine properties, the sewer lateral can be long. Know where your cleanout is before a backup happens.
Local note. Split-levels from the 1970s and 80s often have copper supply with pinhole leaks and older cast iron drains.
Coverage
We serve Thornhill east of Yonge Street, from Steeles Avenue north to Highway 7, including Royal Orchard, Grandview, and the streets around Thornhill Golf Club.