Is a linear drain more expensive than a centre drain for an Ottawa shower tile installation?

Yes, a linear drain installation is significantly more expensive than a standard centre drain — typically $400 to $1,200 more in total installed cost for an Ottawa shower project. The drain unit itself is the biggest cost difference: a quality linear drain runs $300 to $1,200 depending on length, material, and finish (stainless steel, brushed nickel, matte black), while a standard centre drain assembly costs $50 to $150. Beyond the hardware, the installation labour for a linear drain is also higher because of the different subfloor preparation and waterproofing requirements.

The tradeoff is more than just aesthetics, though the clean look of a linear drain along one wall is undeniably appealing. The practical advantage of a linear drain is that the shower floor only needs to slope in one direction — toward the wall where the drain sits — rather than sloping in four directions toward a centre point. A single-direction slope is easier to achieve accurately, looks cleaner with large-format floor tile, and eliminates the awkward pie-shaped tile cuts that a centre drain requires. For curbless (barrier-free) showers, a linear drain positioned at the shower entrance wall is practically standard because it makes the flush floor transition much simpler to engineer.

For Ottawa specifically, the subfloor modification for a linear drain can add cost in older homes. The drain channel needs to sit flush with or slightly below the surrounding floor, which often means recessing the drain into the subfloor structure. In homes with standard joist spacing and depth, this is straightforward. In older Ottawa homes with shallower joists or unconventional framing, the structural work to accommodate a linear drain can add $300 to $800 beyond what a centre drain would require.

The waterproofing around a linear drain is also more involved. The drain connects to the waterproofing membrane along its entire length rather than at a single point, so the membrane-to-drain connection must be continuous and perfectly sealed along 24 to 48 inches of drain channel. Most linear drain manufacturers provide specific membrane connectors and installation details for their products — using the manufacturer's accessories rather than improvising this connection is important for a watertight result.

Is the extra cost worth it? If you are building a curbless shower, a linear drain is nearly essential and well worth the investment. For a standard curbed shower, it comes down to whether you value the cleaner look and simpler floor slope enough to justify the premium. Either drain type, properly installed with correct waterproofing, will perform reliably for decades in an Ottawa bathroom.

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