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166 Dundas St W, Mississauga, ON L5B 2N6, Canada
Sheridan, Mississauga · L5H · L5K
Mature 1960s and 1970s streets in the southwest where old laterals, big trees and dated basement finishes set the pattern.
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Know the neighbourhood
Established 1960s and 1970s neighbourhoods in the southwest, close to Sheridan Creek and the Clarkson industrial edge. Large lots, mature trees, and a housing stock now well into the age where original systems start giving out.
The southwest of the city around Sheridan Creek, between the QEW and Dundas Street, roughly from Erin Mills Parkway east toward Mississauga Road.
1960s–1970s
Detached bungalows, sidesplits and two-storeys on large lots
Many homes here have been renovated in stages, so a kitchen from the 2010s can sit above a basement finished in the 1980s and plumbing that is mostly original. Galvanized supply lines still turn up in some houses and corrode from the inside. Sidesplits and bungalows have a lot of floor area at or below grade.
Sheridan Creek runs south through the area toward Rattray Marsh and Lake Ontario, and homes along its ravine sit lower than the streets around them. The soil is heavy clay that drains slowly, and many lots have mature trees whose roots work into old clay sewer laterals. Many homes have foundation drains connected to the sanitary or storm sewer, so when the sewer surcharges, water can push back toward the basement.
Local conditions
These three conditions decide where we look first on a Sheridan call, what can be saved and where the drying equipment goes.
Properties near the creek and its ravine take surface water during heavy rain on top of whatever groundwater sits there already.
The canopy here is significant, and so is the damage it does to a fifty-year-old clay lateral running underneath it.
Panelling, carpet laid over concrete, and no vapour barrier. Those finishes hold water and hide it, which is how mould gets started before anyone notices.
A call we get often in Sheridan
A call we get often here: after a long, heavy rain the basement floor drain backs up and leaves a layer of dirty water across the laundry room and the finished rec room. A root-choked clay lateral or a surcharged sewer is usually behind it. Because it is sewer water, we treat the carpet, underlay and the bottom of the drywall as contaminated. We clean and disinfect the concrete, dry the walls and recommend a camera inspection of the lateral before the owner rebuilds.
Through the year
Heavy rain combined with roots that grew into the lateral over the summer is when floor drain backups peak.
Snowmelt and rain keep the clay around the foundation saturated, and older poured or block walls start to seep at the cove joint.
Galvanized or copper lines running along exterior walls in crawlspaces and sidesplit lower levels can freeze during a cold snap.
Summer storms bring short bursts of rain that ravine-side lots near Sheridan Creek cannot shed fast enough.
Most requested here
Old clay laterals and mature tree roots make sewer backups one of the most common losses on these streets.
Sewage & Category 3 CleanupBasements finished decades ago often hide mould behind panelling and carpet after small, repeated leaks.
Mould RemediationOwners here often use a loss as the moment to rebuild an old basement properly, with modern materials and a vapour barrier.
Water Damage Repair & ReconstructionBefore it happens
Have the sewer lateral camera-inspected and cleared of roots, especially under a large maple or willow.
Ask a plumber about a backwater valve if your home has a basement floor drain and has never had one fitted.
Replace any remaining galvanized supply pipe before a pinhole leak opens up inside a finished wall.
Look at the City of Mississauga's basement flooding programs for help with disconnecting foundation drains or downspouts.
Local questions
Not covered here? Call and ask a restoration manager directly.
(877) 738-2893Lots that back onto the creek ravine sit lower and take more surface runoff during heavy rain. That does not mean they all flood, but grading, window wells and walkout doors on those lots deserve more attention. Homes higher up are more likely to see water from the sewer side than from the creek.
Many policies cover the sudden damage from a sewer backup if you have sewer backup coverage, but not the cost of fixing the pipe itself. Root damage that builds up over time can be treated differently. Check your policy wording, and we will document the cause clearly either way.
It depends on what is behind the walls. Older finishes often have panelling over furring strips and no proper vapour barrier, and in a sewer backup they usually have to come out. With a clean water leak, some of it can be dried in place if we get to it early.
Our average arrival in Sheridan is 45 min from the Dundas Street West base in Cooksville. A restoration manager answers live, 24 hours a day, and sends the nearest equipped truck while you are still on the line.
Next door
Every hour counts
Drywall wicks moisture upward at roughly 1 inch (2.5 cm) an hour, and mould takes hold inside 24 to 48 hours. Call now and a certified crew reaches your street tonight.
