Scarborough has a lot of solid houses with tired bathrooms. Many of the post-war bungalows, side-splits, and two-storey homes across the area still have their original layout, and some still have the original tub, tile, and fan, or no fan at all. A remodel is a good investment in these homes, but only if the work behind the walls gets the same attention as the tile you pick.

This post covers what we usually find when we open up a Scarborough bathroom, why ventilation deserves a bigger share of the plan than most people expect, and how to sequence the job so you only pay for it once. For local project details, see our bathroom remodel in Scarborough page, and for bathroom work across the city, our bathroom renovation page.

What older Scarborough bathrooms tend to hide

Homes in neighbourhoods like Wexford, Dorset Park, Cliffside, Agincourt, and the streets around Birchmount and Kennedy were mostly built from the 1950s to the 1970s. Once the old finishes come off, a few things show up again and again:

  • Tile set in a thick mortar bed or over drywall that has been wet for years behind the tub
  • Soft or rotted subfloor around the toilet flange and the tub apron
  • Older galvanized or mixed supply lines and cast-iron drains that are near the end of their life
  • Small or missing exhaust fans, or fans that vent into the attic instead of outside
  • Exterior walls with little insulation, which makes the room cold and pushes condensation onto the window and wall

None of these are unusual, and none of them are reasons to panic. They are reasons to plan for an open-wall inspection early and to keep some room in the budget for what the walls reveal.

Ventilation is part of the remodel, not an extra

Most moisture damage we see in bathrooms comes from steam that has nowhere to go. A properly sized exhaust fan, ducted to the outside with a short, sealed run, does more to protect a new bathroom than almost any finish upgrade.

  • Size the fan for the room and choose a quiet model, because a noisy fan is a fan nobody turns on.
  • Vent it outside through the roof or an exterior wall, never into the attic or a soffit where the moisture just moves somewhere else.
  • Use a timer or humidity control so the fan keeps running after the shower is off.
  • Insulate and seal the duct where it passes through a cold attic, so it does not drip condensation back into the ceiling.

In bungalows with a shallow attic, the duct route takes some thought. It is much easier to sort out while the ceiling is open than after the new drywall is painted.

Waterproofing behind the tile

Tile and grout are not waterproof on their own. In the shower and around the tub, the protection comes from the layer behind the tile: a proper waterproofing membrane over a suitable backer board, with sealed corners, niches, and valve openings. If you are building a walk-in shower, the floor needs the correct slope to the drain and a continuous membrane that ties into the walls.

This is the part of the job you never see once it is done, and it is the part that decides whether the bathroom still looks good in fifteen years. If water has already reached the basement ceiling below, our waterproofing page explains how we look at moisture in the rest of the house.

Layout changes that make sense in a Scarborough house

Many owners want to swap the tub for a walk-in shower, add a double vanity, or borrow a little space from a hallway closet. These changes are often very doable. What drives the scope is usually plumbing: where the drain stack is, which way the floor joists run, and whether there is access from the basement below. In a bungalow with an unfinished basement, moving fixtures is often simpler than people expect. In a finished basement, it may mean opening a section of ceiling, which we plan for up front.

If you are also thinking about the basement or the kitchen, it can save money to coordinate the plumbing work in one visit. Our basement renovation and kitchen renovation pages cover those projects.

A sensible order for the work

  1. Site visit, photos, and a clear list of what you want the room to do
  2. Demolition down to the studs and subfloor where needed
  3. Repairs: subfloor, framing, and any damaged wall sections
  4. Rough plumbing and electrical by licensed trades, including the exhaust fan and duct
  5. Insulation where the walls are exterior, then backer board and waterproofing
  6. Tile, fixtures, vanity, lighting, and finishing

Following that order keeps surprises in the early stages, where they are cheaper to deal with, and keeps the finished room from being opened up again later.

Why the person running the job matters

Nehan Construction is a licensed contractor serving Scarborough and the wider GTA, including Pickering, Ajax, Whitby, and Oshawa. Owner Yama Nehan has about 20 years of hands-on construction experience and a construction engineering background from George Brown (Building Renovations). He also has extensive home-inspection experience, about 15 years, and is among the top inspectors in Ontario, Canada. In a bathroom that means spotting the water damage, poor venting, and shortcuts from past renovations early, before they end up under new tile. If you want an independent condition check on the whole house first, see our home inspections page.

Licensed plumbers and electricians handle the trade work, and the scope is written after a site visit so it reflects your actual house. You can see everything else we do on our services page.

If you are planning a bathroom remodel in Scarborough, call 647-704-7100 or email nehanconstruction@gmail.com. A few photos of the current bathroom and a short note on what you would like to change are plenty to get started.

FAQ

How long does a bathroom remodel in Scarborough take?

It depends on the size of the room, what is found behind the walls, and the fixtures you choose. A straightforward full remodel moves faster than one with layout changes or subfloor repairs. You get a realistic timeline after the site visit.

Can I replace my tub with a walk-in shower?

In most Scarborough homes, yes. The main questions are the drain location, the floor structure, and how the shower floor will be sloped and waterproofed. We check those on site before recommending a layout.

Do I really need a new exhaust fan?

If the current fan is small, noisy, or vents into the attic, replacing it is one of the best things you can do for a new bathroom. Good ventilation protects the paint, grout, ceiling, and framing for years.

How do I get a quote?

Call 647-704-7100 or email nehanconstruction@gmail.com with photos and a short list of what you want. The written scope follows a site visit.