Do-it-yourself plumbing in the bath

Do-it-yourself plumbing in the bath Water supply to the bathhouse in winter so that it does not freeze

There are many methods to build a water supply system in the bathhouse, from a simple rubber pipe (makeshift), which is laid along a wire stretched between buildings, to a serious self-regulating system with heating and automatic drain. The water supply scheme is traditionally selected according to the operating conditions, the distance of the water source and the frequency of use of the steam room. The main thing is that in winter the pipes and stop valves of the water supply system did not break the water frozen inside. Consider how to make a plumbing in a bathhouse in winter.

Ordinary winter water supply for a bath

Laying temporary water supply from the air in a bathhouse only on condition of insulation and constant use of water and a steam room.

But even in a pleasant climate, for example, in Sochi, frosts occur in winter, and therefore sooner or later, this water supply will freeze over. For this reason, all air and ground options can be used only in the summer, and for winter cottages, the water supply must be laid in the ground.

Laying pipes in dry ground. The first thing that is important to pay attention to before supplying water to the bathhouse is the water table. The most proven and ancient method of laying a water pipe for a steam room without unnecessary tweaks requires the fulfillment of the following conditions:

  • The most dense and dry soil, with a low water level on the surface.

  • Pipes for bath water supply should be made only of polyethylene, no polypropylene or PVC.

A polyethylene water pipe laid at a depth of 0.5 meters will be very flexible and resilient to withstand water pressure without being damaged. One sensitive place in the system for the bath room will remain metal fittings - squeegees and taps, by means of which, traditionally, separate branches of the system are fastened.

Good advice! So that there is no destruction from ice plugs, a section of a water supply system made of polyethylene, which is laid through a cold room without heating, is joined with couplings and squeegees made of steel, and soldered end-to-end, in the form of a single line.

If, after the closure of the bath, at least 25% of the total volume of water remains in the pipes, then a winter-type water supply system made of polyethylene can be joined by all available methods, but the line must be insulated with expanded polystyrene.


Pipes of the winter system with valve

For a place where there may be more frosts -20 degrees in winter, the water supply system in the bath room without heating can only be retrofitted with a diffusion drain valve. The process for arranging the valve drain looks like this:

  1. Under a polyethylene pipe for a water supply, in a convenient place, even in a bathhouse, a miniature well is punched into the ground with a freezing depth and +0. 6 meters. The hole is slightly larger than the water pipe.

  2. In the area above the miniature well, a U-shaped elbow, also made of plastic, is soldered into the polyethylene pipeline. At the lower point of the knee, it is required to embed a fitting on which a plastic drain pipe is put on, with a length that is equal to the depth of a miniature well.
  3. A cover made of geotextile with high density is put on the end of the drain tube. A little sand is poured into a small well so that the end of the drain pipe, which is connected to the elbow of the water supply, rests slightly on the sand pillow.

Good advice! Before making a well for water in a bathhouse, it is required to make a small exploration of the depth of the water layers.

Otherwise, instead of draining into the ground, you can get to the underground springs, and then all the work and efforts done were in vain.

Naturally, when working under pressure, water that will pass through the plastic pipe gets into the ground. But this is very little, no more than 25 liters for a full day of constant use of the bath. After it is closed at the entrance, and all the water that remains in the water pipe in the winter will begin to drain into the knee. After 1/2 hour, the water begins to freeze, expand and squeeze out all excess into the ground.

There will be no terrible results for the water supply of the bathhouse.

Materials for water supply in the bathhouse

Do-it-yourself plumbing in the bath How to make a water supply in the bath? Quite often, before building a winter water supply system in a bathhouse with your own hands, the problem of choosing a suitable pipe material appears. The answer to the question is not as obvious as it might seem at the beginning. For example, pipes made of polypropylene # 25 are perfect for distributing water in a bath room for a shower in the washing department. Plastic can be easily soldered and laid in a variety of places, and therefore most of the water supply in the bath is made of polypropylene.

For a winter-type water supply system, which is laid in the ground between the bath building and the well, polypropylene pipes must be well insulated and connected to heating. In the case when the water constantly solidifies inside the polypropylene container, then after 20-25 freezing - defrosting cycles, cracks form in the welding areas, and after a couple of years the bath building will remain without water supply. It is worth replacing them at the same time with polyethylene, which has excellent plasticity even at -50 degrees.

Inside the bathhouse, plastic can be used without restrictions. With the water supply valve closed and the taps open, water will always flow to the lowest point of the water supply, which is usually equipped with a liquid discharge line.

An exception will be the transition from the water supply manifold to the tank and hot water tap in the steam room. This part of the water line in the bath is made from 0.5 inch steel pipe.

Piping in the bath

One of the typical options for laying pipes in the room will be shown in the diagram below. Water begins to enter the building through the wall or floor of the dressing room.

A dirt filter is immediately placed, and a water drain valve from the accumulation tank, which is usually raised to the attic of the building.

There are three drain systems in the water supply system:

  • Drain from the hot circuit, which is connected to the heat exchanger of the furnace.
  • From a cold boiler circuit.
  • From a storage tank.

Despite the complexity, in reality the circuit is very efficient and easy to operate.

After stopping the furnace, the excess steam pressure squeezes out water from both the water storage and the boiler. The drain taps, which are located under the rough floor covering in the bath room, are left open, which gives an almost complete drain of the liquid from the system in a short time.

The most popular pipe connection schemes

In addition to the material and climatic conditions, for laying a water supply system in winter, it is necessary to take into account the method of water supply for the bath. Usually, water for the steam room and the washing department in the country can be supplied in 3 methods:

  • Take water from the well, which is located at a short distance from the bath building.
  • From the well drilled at a distance of 20 meters from the bath.

  • From the central water supply system.

The connection of a winter-type water supply system for a bathhouse in all cases differs slightly from the water supply system of a country house or a residential building due to the lack of constant heating of the room. The most difficult thing can be considered the connection of a winter-type water supply system to the central water supply line of the dacha village.

How to conduct water from home

Plumbing in the bathhouse in winter, so as not to freeze, is extremely important. The main village highway can be at a shallow depth, high pressure and a constant flow does not allow water to freeze even at negative air temperatures.

If excellent insulation is added to this, then the pipe can freeze only in an emergency. Another thing is a small winter water supply system, which is directly connected to the bathhouse.

Scheme of connecting pipes to the mainline

If you use polyethylene water pipes, then you need not fear for the integrity. Plastic can withstand all types of freezing. The situation is more complicated with the valve and filters, through which the water pipe is connected to the central highway.

In this case, the only technically correct solution would be to build a well or a caisson, as in the diagram. If you use the sauna once a week, and there is no living space nearby that is constantly heated, then you cannot do without a caisson. There are many schemes with winter water supply heating, but their reliability is not the best, especially in a situation when the bathhouse is located far out of town, where the owners go once a week, in winter, or there are constant power outages.

In the plumbing system, 2 drain taps must be installed:

  • The first will be located immediately after the inlet valve.
  • The second will be at the lowest point of the water supply in the bath.

At the end of the paired procedures, it is required to descend into the well, shut off the water at the inlet of the water supply and open the drainage valve. But until the drain valve in the bath is open, the water will not leave the system. it is required to climb into the room and unblock it. The air pressure in the line will equalize, and the remaining moisture, this is about 10 liters of water, and they drain into the plastic container in the well.

Water supply to the bath from a well

Do-it-yourself plumbing in the bath Quite often the main source of water for baths in a suburban area or a bath, a simple well remains, which is dug far from the steam room.

It is important to take water from the well using a submersible pump. The water pipe is laid in the ground to a depth of at least 2 meters and is led out into the well shaft through a hole in the side wall. On the same line, a rubber corrugation or hoses for supplying the electric wiring are laid.

To avoid defrosting of the winter water supply system, a check valve is not installed on the pump, and an air drain valve is installed on the inlet line in the bath. After the end of the bath procedures, it is enough to open it for 15 minutes for the water to run back into the well.

The liquid can drain without an air throttle, but the process will be very long, and in severe frosts, the water on the drains in the well shaft can be caught by ice.

Arrangement of a water supply system from a well to a bathhouse

Another equally popular method is to supply water to a bath from a well. The scheme for arranging a water supply system for a bath room practically does not differ from a system for a simple residential building, but there are certain tricks. If a full-fledged sewerage system is built in the bathhouse with the discharge of dirty water into a septic tank, then a well for a water supply can also be punched under the bathhouse building.

Naturally, in this case, it is required to make a full-fledged foundation of the MZL with insulation of the supporting tapes and blind area.

If the wells are taken out of the building, then the mine will need to be equipped with a warm brick caisson with a double hatch. In order not to freeze the valve plumbing fittings, at the head of the well, the entrance hatch will be supplemented with a warm sash made of expanded polystyrene or polystyrene with a thickness of 7 cm. The walls of the caisson can be insulated to the bottom with the help of PPU or PPS.

To discharge water from the water supply system, a drain valve with a short elbow adapter is installed on the outlet line of the submersible pump, which connects the pipes to the well shaft. To drain the water residues that have accumulated in the water supply in the bath room, it is enough to open the valve for 10 minutes and do not forget to close it back.

Most owners install remotely controlled electric valves to keep them from sinking into the caisson after taking a bath. This is convenient, but in reality manual valves will be more reliable.


The water supply in the bath (winter), in addition to a well thought-out scheme and assembly quality, will require regular maintenance.At least once a quarter, each valve and valve must be fully opened and closed 10 times. Plastic fittings will easily stick, and if you do not follow their condition, then after 1-2 years the taps can jam and sour.

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