Your drainage system is a tree. Every fixture is a leaf, branches join into larger branches, and everything eventually meets one trunk running out of the building.
Which means the list of what's affected tells you where the blockage is, before anyone opens a chamber or runs a camera.
One fixture blocked with everything else fine? The problem sits out at that leaf. Two fixtures in one room? They share a twig, and the obstruction is at or past where they join. The whole ground floor backing up? You're at the trunk.
That's not a rough guide — it's how the system is physically built, and it's why the first question we ask isn't what's blocked but what still drains normally.
Tap the call button and tell us which fixtures work and which don't. Two minutes of that narrows it further than any tool will before we arrive.
FlowPoint Plumbing clears, inspects, and repairs drains across Tiburon, CA for homes and businesses.
Work through this before you call. It costs nothing and it changes what we bring.
Test everything, not just the blocked one. Every sink, basin, bath, shower, toilet, and floor drain in the property. Run each for thirty seconds and note whether it drains normally, slowly, or not at all.
The obstruction is local — the trap, the fixture's own waste, or the short branch serving it. The smallest, cheapest version of this job.
They share a branch. The blockage is at or beyond the point where they join, which is why one alone couldn't cause it.
A larger branch serving that level.
The main run. Water backing up in the line escapes through the lowest opening it can find, which is why ground-floor showers, baths, and floor drains fill before anything else.
The trunk, at or beyond the point where the building's drainage leaves it.
Flushing a toilet and watching the shower gurgle or fill means both feed a line that can no longer take the volume — and the blockage is past their junction.
Air being pulled through the water sitting in a trap. It's the warning stage, and the cheapest possible moment to act.
Points at surface water entering the foul system, or a shared line running at capacity.
If neighbouring properties are affected at the same time, you may be looking at a shared or public sewer rather than your drain — which changes who pays.
Two different jobs sold under one name, and you should know which you're buying.
A rod, an auger, or a jet displaces the obstruction and water moves again. Fast, comparatively cheap, and completely sufficient when the pipe behind it was sound and something unusual went down it.
Blockages rarely form in a healthy pipe — they form where it has already narrowed, and something ordinary finally couldn't pass. That narrowing might be grease and scale coating the wall, roots at a joint, or a sag holding standing water. Clear the obstruction and the narrowing is still there, collecting again on roughly the same schedule.
A first blockage in a line that's been fine for years is usually what it looks like.
A drain that blocks repeatedly, in the same place, is reporting pipe condition rather than household habits. No amount of clearing changes that, and paying for it three times is how people find out.
The question worth asking after any clear: what was it blocked on, and is that still in there?
Where the blockage sits in a public sewer or a shared drain serving several properties, the responsibility — and the cost — may not be yours. Neighbours affected at the same time is the clearest signal. Ask before you pay for anything; it's a two-minute conversation.
Different tools do genuinely different jobs. A contractor who owns one will recommend it for everything.
For a trap or an obstruction close to the fixture. Often what you've already tried, and sometimes all that was needed.
A powered cable driven through the line with a head chosen for the obstruction. Effective at breaking through and pulling back soft blockages, and the standard approach for many domestic clears. What it doesn't do is clean the pipe wall — it makes a hole through the problem rather than removing it.
Water at pressure through a directional nozzle, scouring the full internal diameter as it travels. This is the difference between a hole through the grease and a pipe restored to bore. The correct method for fat, sludge, scale, and anything that has built up along the wall rather than sitting as a lump.
A cutting head removes growth that has entered through a joint or crack. Necessary, but it treats the symptom — roots return to the same defect unless it's repaired or lined.
Chains or specialist heads removing hard scale from older cast iron and clay, restoring diameter lost over decades.
Not a clearing method — a diagnostic one. It shows what's there, where, and why.
Where the pipe itself has failed, no clearing method fixes it. Continuing to clear a collapsed or sagging section is paying repeatedly for a temporary result.
The dominant cause in kitchens, domestic and commercial. It goes down warm and liquid and sets as a coating on the pipe wall, narrowing the line a little more with every wash-up. By the time it blocks, that pipe has been closing for years.
Whatever the packaging claims, they don't break down like paper. They snag on any imperfection and then catch everything arriving behind them.
The standard bathroom blockage, and almost always in the trap or the first metre beyond it.
In hard water areas and older metal pipework, deposits reduce the bore permanently until the line runs at a fraction of its designed capacity.
Roots find moisture through the smallest joint or hairline crack, then grow inside where conditions are ideal. Common on older clay and anywhere mature planting sits near a run.
A dip from poor bedding or ground movement. Water stands rather than flowing, solids settle out, and that point becomes the permanent site of every future blockage. Repeat blockages at the same distance from the access point is the signature.
Age, ground movement, or damage during other excavation.
Pipework laid too level to self-clear, usually during a conversion. It blocks because it was built to.
Toys, cleaning products, dropped items. The one category that genuinely is a one-off.
The first thing most people reach for, and rarely the right answer.
The product sits in standing water above the obstruction, diluting, doing very little against a mass of fat or a wad of wipes — and it's still there, caustic, when someone opens that pipe.
Repeated use damages older pipes, seals, and joints, and the resulting leak costs far more than the blockage.
Scale, roots, sags, and displaced joints are entirely unaffected. At best you've bought a few weeks.
More hazardous and sometimes more expensive, because whoever attends now has to work around a chemical hazard you've introduced.
If a drain is fully blocked, stop putting anything into it — water included. Every flush, cycle, and tap run adds to a line that can't take it.
Not every drain needs one. Some genuinely do.
Footage, a located position for anything found, and a recommendation you can act on — cleared, monitor, or repair. A survey producing no actionable finding wasn't worth doing.
For a first-time blockage in one fixture that cleared cleanly. We'll say so.
The list of unaffected fixtures locates the blockage faster than anything we can bring in the van.
Because "it's clear now" isn't an answer, and what came out determines whether it stays clear.
Grease needs scouring, not punching through. Roots need cutting and then sealing. Rodding everything is one tool doing four jobs badly.
Where a section has sagged, cracked, or displaced, we'll tell you rather than booking you in again in four months.
Nobody should pay to clear a pipe belonging to a utility or a shared system.
Drain work is unpleasant. The area is cleaned and disinfected before we go, as standard.
Licensed, insured, and background-checked plumbers serving Tiburon, CA.
You'll have the position before work starts, and where a repeat is likely you'll be told why rather than simply rebooked.
FlowPoint Plumbing proudly serves Tiburon, CA and the surrounding neighborhoods, clearing, inspecting, and repairing drains for domestic and commercial properties throughout the area. Unsure whether you're in range? Call and ask.
Click Here To Call Number(833) 435-3258Because drainage is a branching system, and the pattern of what's affected physically locates the blockage. One fixture means a local problem. Several across a floor means a shared branch. Everything, with the lowest worst, means the main run. It narrows the search before we arrive.
No. One fixture affected with everything else normal is a local problem — usually the trap or the branch — and it books normally. Worth acting before it becomes a full blockage.
The problem is in the main run rather than at any fixture. Water rising in the line escapes through the lowest opening, which is why ground-floor showers and baths fill first. Stop running water and call.
Because something is narrowing the pipe there — grease coating the wall, roots at a joint, or a sag holding standing water. Clearing restores flow past whatever remains. Until that's removed or repaired, it fills again on the same schedule.
Please don't. In a fully blocked line it sits above the obstruction achieving very little, it can damage older pipework, and it creates a hazard for whoever opens that pipe. If it's fully blocked, stop putting anything into it.
Rodding drives a cable through and breaks the obstruction open. Jetting scours the full internal diameter with pressurised water. For a lump of something, rodding often suffices. For grease coating the pipe wall, jetting is what actually removes it.
Only if it would change a decision. Repeat blockages, suspected roots, pre-purchase, or after ground movement — yes. A first-time blockage that cleared cleanly — no, and we'll say so.
They don't break down like paper. They snag on any imperfection and then catch everything behind them. They're among the most common findings on a blocked domestic drain.
It depends where the boundary of responsibility falls and whether the drain is shared. If neighbouring properties are affected at the same time, that's a strong indicator it isn't solely yours. Ask before paying for anything.
They get into pipes that are no longer fully sealed — an aged joint, a hairline crack, a displaced section. Once inside, conditions suit them and they grow. Cutting clears them; only repairing the defect stops them returning.
Entirely depends on what caused it. A one-off object removed from a sound pipe — indefinitely. Grease rodded rather than jetted, with the coating still in place — months. You should be told which situation you're in.
Stop running water anywhere in the property, keep people and pets out of that room, and call. Every additional flush pushes more into the room. It's a health matter as well as a drainage one, and the area needs disinfecting afterwards.
Drainage branches, and blockages sit at junctions rather than randomly. Which fixtures still work tells us where to look, and what comes out of the line tells you whether it's going to happen again.
FlowPoint Plumbing asks what still drains, matches the method to what's actually in the pipe, tells you what it was blocked on, and says plainly when clearing isn't the fix.
Tap the call button and tell us which fixtures work and which don't.
Click Here To Call Number(833) 435-3258