Symptoms
- Visible crack or chip on the tank lid
- Piece missing from an edge or corner
- Lid feels less sturdy than before
- Crack appeared after the lid was dropped or knocked
Likely causes
- CommonImpact from being set down hard or droppedPorcelain lids chip or crack easily when dropped on a hard floor or bumped against the tank.
- PossibleSitting or standing weight on the lidTank lids aren't designed to bear body weight and can crack under it.
- Less commonAge-related stress fractureOld porcelain can develop hairline cracks from years of temperature changes.
What to do
- Handle the lid carefully going forward and always lift it off rather than sliding it, to avoid further chipping.
- Check that the crack or chip doesn't create sharp edges that could cut someone; sand smooth or cover temporarily with tape if so.
- A minor chip that doesn't affect fit is mostly cosmetic and can be left alone or touched up with appliance epoxy.
- For a significant crack, especially one that runs through the lid, replace it, since a cracked lid can break apart unexpectedly.
- Measure the tank's brand, model, and dimensions before ordering a replacement lid, since lids are rarely universal.
Tools and parts
- Tape measure
- Fine sandpaper (for sharp edges)
Toilet tank lidSearch: “toilet tank lid replacement for [toilet brand and model]”
When to call a pro
A plumber isn't typically needed just to replace a tank lid, though a hardware or plumbing supply store can help identify the right match.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.