How much does it cost to replace all grout in a tiled Ottawa shower stall completely?

Complete grout replacement in an Ottawa shower stall typically costs $800 to $2,500 depending on the shower size, current grout condition, tile layout, and whether you're upgrading to premium grout. A standard five-by-eight-foot shower with moderate grout deterioration usually runs $1,200 to $1,800 installed.

The cost breaks down into removal of old grout, substrate preparation, new grout installation, and sealing. Labour dominates the expense — removing old grout from a typical shower is slow, meticulous work that requires grinding or chiseling out grout lines without damaging the surrounding tile. For a shower with both wall and floor tile, a professional tile setter typically charges $40 to $80 per hour and can complete the full project in 8 to 12 hours, depending on grout depth, joint width, and tile fragility. Material costs for grout and sealer typically add $100 to $300.

Ottawa's extreme seasonal humidity — the bone-dry heating season followed by humid summers — accelerates grout deterioration more aggressively than milder climates. Cementitious grout (standard sanded grout) breaks down over time due to the freeze-thaw cycle affecting any moisture trapped in the grout, salt corrosion, and the constant expansion and contraction of the substrate beneath. Grout typically lasts 8 to 15 years in an Ottawa shower before requiring replacement, and once it starts failing, water infiltrates behind the tile and begins attacking the substrate. This is why early intervention matters — catching failed grout before it causes structural damage is far cheaper than dealing with water damage later.

When replacing grout, you have the opportunity to upgrade to a superior product. Standard sanded cementitious grout requires regular sealing (annually in Ottawa's climate) to maintain water resistance. Epoxy grout is waterproof, stain-proof, and never needs sealing — it costs $150 to $300 more in material but eliminates the sealing maintenance and provides superior durability in a shower's demanding wet environment. For an Ottawa homeowner, epoxy grout on a shower regrouting project often pays for itself within a few years by eliminating annual sealing costs and preventing the grout failures that plague cementitious grout in our climate.

Before committing to full regrouting, have a professional assess whether the tile itself is still sound. If many tiles are cracked, loose, or showing signs of water damage, you may be better served by partial tile replacement alongside selective regrouting rather than regrouting over deteriorating substrate. A professional tile setter can identify this during the initial assessment.

If you're ready to move forward with a shower regrouting project, you can browse tile professionals through the Ottawa Construction Network directory — most include grout repair and complete regrouting services as core offerings.

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Looking for experienced contractors? The Ottawa Construction Network connects Ottawa homeowners with qualified professionals:

• Justyn Rook Contracting
• Luxe Painting and Renovations
• 613Bins