Toilets
A running toilet is a water bill. A leaking one is a floor.
Most toilet problems are cheap parts and half an hour. A few, a rocking base, a stain spreading on the ceiling below, a flange broken off at the floor, are the early stage of subfloor damage, and those are worth attending to this week rather than next spring.
Statewide. Repairs, replacements, and honest advice on which one you need.
Diagnosis
What each symptom actually tells you
Toilets fail in a small number of well-understood ways, and they are easy to tell apart.
Runs constantly or refills itself
A worn flapper or a fill valve that will not seal. Cheap, quick, and worth doing immediately, a silent runner can waste hundreds of gallons a day without any sound you would notice.
Rocks when you sit on it
Loose closet bolts if you are lucky, a corroded or broken flange if you are not. Every rock breaks the wax seal a little more, and what leaks out goes into the subfloor rather than onto the tile.
Water or staining at the base
Failed wax seal, cracked porcelain or a broken flange. If the ceiling below is marked, the water has been going somewhere for a while and the flooring needs looking at as well as the toilet.
Weak or incomplete flush
Mineral-blocked rim jets and siphon holes are the common cause in hard water, followed by a partial blockage further down. Sometimes it is simply a first-generation low-flow toilet doing what it always did.
Rocking, staining, or a mark on the ceiling below? That one is not a wait-and-see.
Get It Looked AtOn the day
How a replacement is done properly
Remove and inspect what is underneath
Water off, tank drained, unit lifted out, and then the part that matters, inspecting the flange and the subfloor around it. A soft floor or a cracked flange found now is a repair; found later it is a rebuild.
Repair the flange and the floor first
A flange must sit level with the finished floor and be solidly fixed. Broken ears, corroded cast iron and flanges left below tile level all get properly corrected rather than shimmed and hoped for.
Set, seal and secure
New wax or dense foam seal, unit set square without rocking the seal into place, bolts tightened evenly to snug and no more, new supply line and shutoff, then fill, flush repeatedly and check for movement and seepage.
Never fix a rock with a shim alone
Shimming a rocking toilet without checking the flange hides the cause and lets the seal keep leaking into the subfloor. The rock is information. Take the toilet up and look.
A modern 1.28 gallon toilet with a decent trapway clears better than the 3.5 gallon unit it replaces and uses a third of the water. The early low-flow models earned their bad reputation honestly; today’s do not deserve it.
Choosing
What actually matters when you replace one
Ignore the marketing and check five things.
Rough-in measurement
The distance from the wall to the closet bolts, usually 12 inches, sometimes 10 or 14. Get this wrong and nothing else about the toilet matters, because it will not fit.
Bowl height and shape
Comfort height suits most adults and anyone with mobility issues; standard height suits children and small bathrooms better. Elongated bowls are more comfortable, round bowls fit tight spaces.
Flush design and trapway
A glazed, generously sized trapway and a well-designed flush clear waste reliably at 1.28 gallons. Pressure-assist flushes hard and loud, which suits commercial settings more than bedrooms.
Parts availability and one-piece versus two
A toilet using common, replaceable internals will be serviceable for decades. One-piece units look clean and are heavy to handle; two-piece are easier to fit and repair. Skid-mounted proprietary parts are a future problem.
The install matters more than the fixture. A mid-range toilet on a sound, level flange outlasts a premium one set on a broken one.
Replacing or repairing? We will tell you which is worth doing.
Talk to a Pro TodayKentucky specifics
What the local conditions demand
Hard water, old cast iron closet flanges, and a lot of houses on septic.
Hard water
Scale blocks the flush path
Mineral deposits build in the rim jets and the siphon hole, and a toilet that once flushed strongly gradually gets weaker over years without any single failure.
Descaling the jets restores most of it. Replacing a perfectly good toilet for a scale problem is a common waste of money.
Old cast iron flanges
They break at the ears
Houses with cast iron drains have cast iron closet flanges, and decades of corrosion leaves the bolt ears fragile. They often let go exactly when a toilet is being replaced.
A repair ring or a properly bonded replacement flange, not a longer bolt and optimism.
Septic systems
What gets flushed matters more
Wipes marked flushable, hygiene products and heavy paper use cause far more trouble on a septic system than on a municipal sewer, and the blockage is usually just past the toilet.
Low-flow toilets are good for septic loading. Anything beyond paper is not, whatever the packaging says.
Crawl space houses
Leaks stay hidden longer
A toilet leaking onto a crawl space rather than a finished ceiling gives you no visible warning, and the joists below take the damage quietly for months.
If a toilet rocks in a crawl-space house, look underneath as well as at the flange.
Tell us whether it runs, rocks, leaks or flushes poorly, they are different jobs.
Related work
Fixture work that usually gets grouped with it, and what a leak at the base can become.
Questions
Toilets, answered straight
Almost always the flapper or the fill valve. The flapper hardens and stops sealing, so water trickles into the bowl and the fill valve tops it back up forever. Both are inexpensive parts, and a silent runner can waste more water in a month than the repair costs.
Yes, more than people expect. The rock breaks the wax seal, and what escapes goes down into the subfloor where you cannot see it. Loose bolts are a five-minute fix; a broken flange found early is a modest repair and found late is a floor.
Repair for running, weak flush, a wax seal or a wobble, those are parts and labour. Replace for cracked porcelain, a badly scaled trapway, or a first-generation low-flow toilet you fight with weekly. A crack is never a repair.
Modern ones do. The 1.6 gallon models of the early nineties earned the reputation, but current 1.28 gallon designs with glazed trapways clear better than the old 3.5 gallon units while using a third of the water. Choose on trapway and flush design, not on gallons alone.
The ring that anchors the toilet to the floor and connects it to the drain. It must be solid and level with the finished floor for the seal to work. Tile added over an old floor frequently leaves the flange too low, which is why extender rings exist.
Wax is the traditional choice, cheap and reliable, but single-use and unforgiving if the toilet is set down twice. Dense foam and rubber seals can be repositioned and cope better with a slightly low flange. Either works when the flange is right.
In Kentucky water, scale in the rim jets and siphon hole is the usual answer, and cleaning them restores most of the performance. If descaling does not fix it, look for a partial blockage in the branch or a vent problem, a slow flush across several fixtures is a drain question.
Many people can, and the risk is not the toilet, it is what the flange and subfloor look like once it is off. If you lift it and find corrosion, softness or a flange sitting below the tile, stop there and get it made sound before setting the new unit.
Cheap to fix now, expensive to ignore
Running toilets waste water quietly and leaking ones damage floors quietly. Both are short visits.