In short
- Caulking sits in the $85–120 hourly band for general repairs in the HomeStars Ottawa guide; the company prices a bathroom after seeing the joints.
- Service life in years, from Natural Resources Canada's sealant table: silicone 20+, acrylic latex 5–25, butyl rubber 5–10, depending on brand.
- Interior sealants need two or three days of ventilation to cure, per Natural Resources Canada.
- Health Canada advises a tight seal around tubs and sinks so water does not run into the walls.
- Caulking in a home built before 1990 can contain asbestos, says Health Canada.
Typical prices in Ottawa
| Job | Typical range | Notes |
|---|---|---|
| Caulking with other general repairs | $85–120/h | HomeStars Ottawa guide, updated 21.08.2026 |
| Minor repairs, small fixes | $75–150 | HomeStars Gloucester (Ottawa) page, undated |
| Handyman, general tasks | $50–100/h | Same Gloucester page |
| Handyman, booked through TaskRabbit | from $45/h | Platform figure; one Ottawa Tasker lists a 2-hour minimum |
Sources. Seen 29.10.2026: HomeStars, How much does a handyman cost in Ottawa? (updated 21.08.2026); HomeStars, Handyman in Gloucester, Ottawa (undated); TaskRabbit, General handyman in Ottawa. Materials and rules: Natural Resources Canada, Keeping the Heat In, section 3; Natural Resources Canada, section 8; Health Canada, Mould; Health Canada, Healthy home guide; Health Canada, Health risks of asbestos.
Where caulk and grout fail
Caulk fills the joints that move: the line between tub and tile, the corner of a shower, the edge of a sink or backsplash, the sill of a window. Grout fills the joints between tiles and stays rigid. Both wear out. Caulk cracks, shrinks away from one side or goes black. Grout powders, cracks or drops out.
Natural Resources Canada states why caulk has a job at all: most joints move with changes in moisture and temperature, and some materials accommodate more movement than others. A joint that opens each winter is working as designed. A joint that stays open leaves a gap for water.
Why it matters in a bathroom
Health Canada’s healthy home guide says to seal tubs and sinks tightly. Water that gets past a bad seal collects behind walls and under floors and gives mould a damp place to grow. On its mould page Health Canada adds two habits: run the exhaust fan for a few minutes after a shower, and hold indoor humidity between 30% and 50%.
A new bead cannot cure a leak inside the wall. So the company will ask first whether the tile or floor feels soft, or a stain shows below.
Sealants and how long they last
Natural Resources Canada’s table gives the choices, with service life in years in brackets. Silicone sealant (20+) bonds to non-porous surfaces such as ceramic tile and glass, smooths easily and holds a flexible watertight seal; it comes with fungicide for wet locations, but most types cannot be painted and it cannot go over existing silicone. Acrylic latex (5–25, by brand) takes paint and cleans up with water. Butyl rubber (5–10) is generally used outside. For joints of 6 mm (1/4 in) and wider, the guide says a backer rod goes in before the caulk.
The company chooses the product for each joint. Tell it what the joint is made of, whether it gets wet daily and whether the bead will be painted.
What drives the price
The number of joints. The state of the old bead, since removing it and the residue takes time. The surface: tile, acrylic tub, stone or painted trim. Grout repair, which is a different task. A minimum charge, if the company sets one. HomeStars puts caulking among general repairs at $85–120 an hour, and its Gloucester page lists minor repairs at $75–150. Neither prints a price per tub. The company quotes the bathroom after seeing photos.
Older homes
Old caulking and sealant sit on Health Canada’s list of building materials that may contain asbestos, beside putty, paint and plaster. The agency’s advice is a professional test before renovating. For a bathroom in a house built before 1990, tell the company the year. Whether to scrape the old bead is a decision to make with that in view.
Windows and the rest of the house
Window trim follows the same logic. Natural Resources Canada describes a continuous bead where the trim meets the wall as a way to cut interior air leakage; the inside-first order is in the FAQ. Drafts at moving parts are a weatherstripping job; see weatherstripping and drafts. Cracked drywall corners around a shower go to drywall repair. The full range is on the small repairs list, and handyman cost in Ottawa compares the hourly figures.
The company that re-seals the joints
Your photos go from the desk to one independent local company. It calls, asks what the joints and surfaces are, and prices the bathroom. Ask it which sealant goes on and how long the area must stay dry.
Questions to ask the company
- Which sealant will you use at the tub, and is it a mould-resistant type?
- Do you remove the old caulk and the residue first, and is that in the price?
- How long before the shower can be used?
- Is grout repair priced separately from caulk?
- If you find water behind the tile, what do you do and who do I call?
Have this ready for the call
- Photos of each joint: tub edge, shower corners, sink, backsplash, window sill
- A note on which joints are black, which are cracked and which are only dull
- Whether the caulk has been replaced before, and what the label said, if you kept it
- A day when the bathroom can stay dry for the cure time
- Any soft spot, stain or smell near the tub or under the vanity
- The build year of the house or condo
Questions people ask
Silicone or acrylic latex: which one goes around a tub?
Natural Resources Canada rates silicone excellent for large moving joints and gives it the longest life in its table, with fungicide types for wet locations; most types cannot be painted. Acrylic latex takes paint, and its life varies more by brand. The company picks the product for each joint and tells you which.
How soon can I shower after the new caulk goes on?
Natural Resources Canada says typical curing for interior sealants is two or three days with extra ventilation. Products differ, so ask the company for the wait on the tube it uses and plan the visit for a day when you have another shower available.
The caulk keeps turning black. Is it only dirt?
It can be mould. Health Canada says small mould patches can generally be cleaned by the occupant, and that mould which keeps coming back calls for professional help. Mould returning at the same joint also points to moisture. Mention it on the call so the company checks for a leak.
Can fresh caulk fix a tub that leaks into the wall?
Fresh caulk stops new water at the joint. Water already inside the wall means a leak to find, and Health Canada notes that leaks leave damp spaces behind walls and under floors. A stain on the ceiling below, or a soft floor, means the water is going somewhere, so tell the company before it starts.
Should I caulk windows inside first or outside first?
Natural Resources Canada says to seal inside first. Exterior caulk goes on only after the interior sealing is done, because caulking the outside first can trap warm moist air in the wall. A company that does window joints should say which order it follows. See also the weatherstripping page.
