How to fix a leaky toilet from underneath

– What causes a toilet leaking from underneath

toilet leaking from underneath

What could be more inconvenient than going into the bathroom and finding yourself with the floor completely wet with water?

A water leak regardless of its extent must be removed immediately, especially if you live in a condominium where any infiltrations could damage the walls of the condominium on the floor below.

It is not always necessary to contact a plumber, the problem can also be solved by doing it yourself, it is necessary to understand the origin of this loss in order to intervene in the right way. The main reasons why there is a  loss of water in the water  from under are:

– the joint that connects the bowl to the drain hose is damaged

the drain hose is damaged

– the drain hose is blocked by a foreign body

– the gasket or flange deteriorates

– the vase has some cracks

– the toilet cistern is leaking

The only way to understand what is causing the toilet drain is to first check the functionality of the cistern and examine all external fittings connected to the drain. If everything is in order, all that remains is to remove the jar and inspect the inside.

– How to take the toilet off the floor

The first step to take to remove the toilet from the floor is to wear comfortable clothing that can guarantee maximum safety. It is mandatory to wear safety shoes and gloves to ensure greater hygiene. The vase is fixed to the floor by two lateral screws.

the toilet off the floor

Before proceeding with the removal, it is necessary to stop the water supply by closing the valve and then empty the toilet cistern by flushing the toilet. If there is water on the bottom of the cup, it must be removed by putting rags inside the jar that can absorb it.

After having recovered the right key, proceed with unscrewing the bolts. To make the job easier, it is essential to exclude the presence of the toilet seat which can obstruct the different operations. Once the plugs have been removed, the toilet is removed from the floor with small and delicate gestures.

If you notice the presence of silicone, it is cut with a sharp cutter. If the vessel is part of an old plumbing system, it is easy to find cement instead of silicone. In this case, the operation is more complicated because it is necessary to take a chisel to put it between the base of the toilet and the floor and with a few hammer blows to eliminate the fixing material.

 fixing material.

We must act very carefully otherwise we risk breaking the sanitary. At this point, the bowl is pulled forward to disconnect it from the existing wall drain. Once the cup lifts off the floor, simply push it forward and slide it out of the drain.

– What to do when the toilet floor seal has deteriorated

If the loss of water from the toilet is due to the flange and the deteriorated gasket, the toilet must be removed from the floor and the wax deposited on the gasket of the flange must be removed. To facilitate the work, we use the spatula. With the suitable screwdriver remove the screws that hold the flange to the base. To prevent the sewer fumes from rising to the surface from the drain, it is advisable to block the opening with some cloths. – What to do when the toilet floor seal has deteriorated

If the flange appears deteriorated, the purchase of a new model is essential. In order not to make a mistake in the measurements it is useful to take the old element with you as a sample, otherwise, with the meter in hand, you can measure the diameter of the sewer pipe.

On the flange, there is a wax ring that must be applied in the lower part of the vase in the appropriate space. With the use of new bolts, the flange is fixed to the floor. At this point the vessel must be placed on top of the flange, aligning it with the bolts present.

the flange

Just press down firmly on the toilet to seal the wax ring to the floor. The work has come to an end, now you just need to fix the bolts sideways. Individual elements can also be purchased in hardware stores. If the wax ring has deteriorated, it does not mean that you have to buy the whole new flange, just replace the damaged part.

– Drainpipe blocked

Sometimes it can happen that the drain hose is clogged. It can be caused by many factors, such as a rag accidentally in the toilet or the presence of a solid plug. If the water rises in the bowl during the drainage from under the toilet, it means that the obstruction is in the vicinity of the siphon.

Drainpipe blocked

In the event of partial blockages, the water level drops slowly, in the presence of major traffic jams the water tends to rise. To force the occlusion in the drain column, the toilet suction cup of a larger size than the one used to free the sink pipes is used. The process is very simple.

Place the rubber cap of the suction cup inside the U-curve and “pump” several times. As soon as the clogging is cleared, the water flows out. Another alternative is the toilet spiral. The flexible rod is introduced into the siphon, then the handle crank is activated to remove the obstruction. The equipment can be found in DIY stores or hardware stores.

– Damaged fitting

Damaged fitting

The toilet bowl is connected to a fitting which in turn is attached to the drain pipe. To prevent water from leaking out of the pipes there are some seals. Deterioration of parts can cause water to leak during discharge with liquid spilling onto the ground.

Fixing the damaged part is not difficult, the only complication concerns the bowl that has to be cleared from the floor. Once the toilet has been removed from the drain, you have to take the fitting and buy a new one at the right angle.

In order not to make a mistake, it is advisable to carry the fitting to be replaced with the following measurements: internal diameter of the drain pipe and the distance between it and the drainpipe of the cup. To be sure not to lose your hands again, it is advisable to also replace any rubber gasket present inside the terminal curve of the toilet, or put it back in place if it is detached from its seat.

– Broken vase

Another reason why the toilet leaks from underneath are the breakage of one or more parts. Once the vase has been removed by detaching it from the concrete or silicone that holds it on the floor, you need to go to the store and buy a new cup. The operation is not as simple as it seems especially if it is an old plumbing system. On the market, there are different types of toilets, from those mounted on the wall to those on the floor.

The different sanitary ware also differs from each other in the position of the drains. If you want to replace the toilet without making any changes to the existing system, it is better to buy a toilet that is possible of the same model as the existing one. Even if in appearance the two sanitary ware may appear identical, sometimes they have differences that involve large or small inconveniences.

Broken vase

If the bathroom has recently been restored, finding a toilet identical to the one to be replaced is not a problem. This way there is no need to drill new holes in the floor or add fittings. If, on the other hand, the broken sanitary ware is dated, it is more complicated to find an equivalent one.

It may happen that the holes in the toilet do not coincide with those on the floor. In this case, it is necessary to place the toilet in its seat and with a felt-tip pen mark, the points on the floor were to make the holes with the drill.

It is also possible that the gasket on the back of the toilet is too long and must therefore be cut and inserted perfectly into the toilet drain. If the height of the drain does not coincide with the mouth on the cup, you need to find a bend or heat the PVC drain hose with a flame, make it soften, and insert it into the back of the cup.

The final fixing of the toilet to the floor with the dowels will be carried out only after making sure that the toilet has been correctly positioned on the drain sling. When finished, simply flush the toilet and check if the toilet is leaking.

– Toilet cistern leaks

What if the toilet flush cistern is disposable? When there is a leak of water in the toilet, it is necessary to evaluate several hypotheses including the toilet cistern. There are several types of cassettes. Low boxes are the most common, they are produced in ceramic or PVC. Flat cassettes are very thin and are used in confined spaces.

Toilet cistern leaks

The retractable boxes are hidden behind panels or fixed inside the wall and then covered with tiles. Only the two buttons are left visible to operate the toilet. The built-in cisterns are produced as an integral part of the toilet.

Regardless of the type of cistern, when there is a leak of water to check what it depends on it is necessary to open the cistern and inspect the inside. The causes of the presence of the water stream could be the worn float or the gasket that does not hold the water as it should. In both cases, it is sufficient to replace the damaged parts and restore the normal operation of the cassette.

– Some advice

In recent years there are many people who prefer to deal directly with plumbing and sanitary repairs. The market has responded to this demand by offering a wide range of materials designed to make work easier for amateurs. The need to save was the main incentive for the increased interest in DIY in plumbing.

Quickly blocking a water leak from under the toilet can save you the expense and inconvenience of replacing damaged fixtures and fittings. Finally, there is the cost of the water itself. Even a small ongoing leak can drive your water bill up in price without realizing it.

The few tens of euros spent on the purchase of a gasket, a pipe, or a flange can save hundreds of euros. Before acting, it is necessary to know the plumbing system in your home so that you can isolate the affected part by closing the water tap and draining the pipes and the cistern before carrying out the repair.

The system must be emptied before starting work on it and in the event of water leaks the affected part must be emptied quickly. For this reason, it is necessary to know the positions of the stop, interception, and drain cocks before finding oneself in emergency situations.

Leave a Reply

Your email address will not be published. Required fields are marked *