What's on a bathroom maintenance checklist?
Updated August 2026
Keeping a bathroom watertight comes down to re-caulking the tub and shower every year, resealing the grout every 1 to 2 years, and a two-minute look under the sink each quarter. Pair that with an exhaust fan you clean twice a year and you have shut off the three ways water quietly wrecks a bathroom: through split caulk, through porous grout, and through steam the fan never pulled out.
| Task | Interval | Effort |
|---|---|---|
| Wipe or squeegee the shower to slow soap scum and mildew | Weekly | 3 min · DIY |
| Run the fan for 20 to 30 minutes after every shower | Habit | Ongoing |
| Task | Interval | Effort |
|---|---|---|
| Check under the sink and around the toilet base for damp | Quarterly | 3 min · DIY |
| Clear slow drains before they back up | As needed | 10 min · DIY |
| Task | Interval | Effort |
|---|---|---|
| Vacuum and wipe the exhaust-fan grille and blades | Every 6 months | 15 min · DIY |
| Scrub grout and look for cracked or missing lines | Every 6 months | 30 min · DIY |
| Task | Interval | Effort |
|---|---|---|
| Re-caulk the tub, shower, and fixture-to-tile seams | Yearly | 1–2 hr · DIY |
| Confirm the fan clears steam (a tissue should hold to the grille) | Yearly | 2 min · DIY |
| Exercise the toilet and sink shutoff valves | Yearly | 5 min · DIY |
| Task | Interval | Effort |
|---|---|---|
| Reseal cement grout in the shower and floor | 1–2 years | $15 DIY |
| Replace a fan that is loud, weak, or 8–15 years old | As needed | $150–400 installed |
What neglect costs
A failed bead of caulk is a $6 tube of silicone you ignored. Leave it split and shower water tracks behind the tile into the subfloor, where it feeds rot and mold you do not see until the floor flexes underfoot. By then you are into subfloor replacement at $1,000–3,000 and, if mold has spread inside the wall, remediation at $500–4,000 on top. A weak or dead exhaust fan does the same damage slower, holding enough humidity to grow mold on the ceiling and around the window in one damp season.
Leave these to a pro
Regrouting a full shower, resetting a rocking toilet on a fresh wax ring, or fixing a fan that dumps into the attic instead of outside are the jobs worth handing off. A tile or handyman pro runs $150–400 to strip and replace failed shower grout, and a similar $150–400 to install a new fan and duct it properly through the roof or soffit. If you find soft flooring or a musty smell that will not clear, have the leak traced before you caulk over the symptom.
This whole checklist ships as reminders in OnOtto: every task above, on the right schedule for your home, snooze-proof.
Load this checklist as remindersFrequently asked questions
How often should I re-caulk a shower?
Plan on once a year as a habit, and sooner the moment the bead cracks, peels, or grows a black mildew line you cannot scrub out. Silicone stays flexible for a while, but the tub moves a little every time it fills, and that flex eventually opens a gap. Do not caulk over old caulk: cut and pull the old bead first, let the joint dry fully, then lay a single clean bead of 100% silicone rated for kitchen and bath.
Why does my bathroom keep growing mold?
Almost always ventilation. A fan should move roughly 1 CFM per square foot of floor (so about 80 to 100 CFM for a typical bath), and it needs to run during the shower and 20 to 30 minutes after to actually carry the moisture outside. If the fan is undersized, clogged with dust, or vents into the attic rather than through the roof, humidity lingers and mold takes hold on the ceiling, grout, and window frame. Clean the blades twice a year and confirm the duct really exits the house.
Do I need to seal bathroom grout?
Cement grout, yes, every 1 to 2 years, because it is porous and wicks water straight into the wall behind it. Epoxy grout is the exception: it seals itself and never needs a topcoat. To check whether yours is due, drip water on a grout line and watch. If it beads, the seal is holding; if it soaks in and darkens, reseal. The full routine lives on the tile and grout checklist.