The issue of insulation of water pipes is especially relevant among the owners of suburban real estate. Often in summer cottages and villages, the owners themselves have to worry about many components of a comfortable stay.
Especially when it comes to houses / cottages with year-round living - you can not do without insulation of communications. And first of all, it is necessary to choose and lay a heater for water pipes - without water, as usual flowing from a faucet, it is difficult to enjoy the delights of suburban life.
In our material we will explain why it is worth insulating the water supply and what to look for when choosing a material for thermal insulation.
Is it necessary to insulate the water supply?
Often the question of whether it is necessary to insulate the water supply occurs on a frosty morning, when it is too late - water from the tap does not flow. It is in this situation that the homeowner has no doubt about the need for this event.
Indeed, pipe insulation is not always necessary. It all depends on the location of the house, climatic conditions, residence time of residents and the features of laying water utilities.
When it is decided to deepen the water pipes to the freezing level, then there is no need to save at an additional depth of 0.5 meters. Otherwise, you should take care of thermal insulation.
If family members come to rest only in the warm season, then there is no need for insulation. To prevent accidental rupture of pipes due to frozen water in cold weather, when no one is at the cottage, you just need to properly preserve the system, qualitatively preparing it for winter.
It does not require insulation and water, stretched to a sufficient depth. According to the norms, water pipes must be correctly laid to the following depth: 0.5 meters + soil freezing depth in a particular region. This is an important condition that must be observed so that you do not have to redo everything again after the first winter.
If the water supply is not insulated and not deep enough, there is a danger of freezing of the entire soil layer and the formation of ice inside the pipe
The inhabitants of the northern regions have a freezing level of 2.5 m or more. This greatly complicates the process of deepening the pipeline to the desired level. Yes, and such an event will be expensive. Here you can’t do without warming.
It happens that there is no way to make a trench of the required depth for laying water pipes. In such cases, insulation is a must. Another point is the entrance of the water pipe into the house. This plot in cold weather often receives increased attention from many homeowners. Therefore, you need to take care of the insulation in a timely manner by choosing the right material.
If the water in the pipe is frozen, then in the best case, users will be left without water, and in the worst case, they will break through the pipe and have expensive repair work to find this area and fix the problem
Another place to remember about the pipeline is the entry of the pipe into the well / well. It all depends on the characteristics of a particular water supply system and the arrangement of this site. If this is a well and the pipe is immersed in it, then we must not forget about its insulation, choosing a material resistant to ultraviolet rays and precipitation.
Image Gallery
Photo from
Water pipes laid above the surface of the earth and in the ground, but above the horizon of seasonal freezing, need thermal protection. Without insulation of the water supply system, the formation of an ice plug and the subsequent breakthrough are possible
An autonomous water supply route laid above the freezing level is best placed in a tray made of hard insulation with minimal water absorption. This is extruded polystyrene foam.
Porous thermal insulation capable of absorbing moisture, due to which the insulation practically ceases to fulfill its obligations, must be protected with an external waterproofing sheath, at least with polyethylene or roofing material
All sections of the external water supply, laid open, that is, above the surface of the earth, must be insulated. Moreover, when laying under canopies or in sealed boxes, they do not need waterproofing
The function of a waterproof cover for openly laid water pipes will be successfully performed by a sewer PP pipe. However, it must also be isolated.
Thermal insulation of pipes of an autonomous water supply at the entrance to the building is mandatory
In order to avoid freezing and subsequent breakthrough, it is necessary to insulate all internal sections of water supply passing through unheated rooms
In order to increase the efficiency of thermal insulation of pipeline sections suffering from low temperatures in the winter, it is recommended to use a heating cable as an effective addition
Thermal insulation for a water main
Laying pipes in a styrofoam tray
Insulation of pipes at the outlet of the well
Thermal insulation of land above ground
Gasket in the casing of the sewer pipe
Water insulation at the entrance to the house
Pipe laying in an unheated basement
Improving heating cable efficiency
Methods of insulation of water pipes
So that the frost does not damage the water pipes in a private house / cottage / cottage, you have to worry about their thermal insulation in advance.
It is important, even at the stage of laying communications, to consider options for insulation of pipes, and not only water pipes. If this is done in a timely manner, then the costs will be minimal.
There are a lot of options for insulation for pipes - it is important to choose high-quality material among the mass of offers, not very focused on the price. The cheapest option is waste of money
Among the methods of warming a pipeline for supplying water to a house among homeowners, the most popular are:
- extend the pipeline 0.5 m below the freezing level;
- use a heating cable;
- insulate with insulating material;
- provide an air gap;
- buy a finished factory pipe;
- apply several methods at once.
Most often, more than one method is used. So, if the water pipes are deep, then the area responsible for entering the house still needs to be insulated. Therefore, the most optimal option is selected for him in order to secure the local water supply system.
The depth of the pipeline depends on the region. To find out, you can use the special look-up tables, having found your region or checked empirically
The heating cable is widespread due to the simplicity of laying and high-quality performance of the functions assigned to it.
Depending on the type of installation, there are 2 types of cable:
- outer;
- interior.
The first is mounted on top of the water pipe, and the second is inside. It is securely insulated and made of safe materials. It is connected via a heat shrink sleeve to a conventional cable with a plug or to the machine. Read more about the heating cable for plumbing below.
The heating cable is of various capacities. Most common from 10 to 20 watts
There are a great many thermal insulation materials on the market. They all differ in their properties, quality, price, installation difficulties and service life.
Which one to choose depends on the specific situation.
Among heaters, polyethylene and polyurethane half-cylinders - shells are particularly easy to install
An air gap method is also often used. It is a water pipe placed in a cheap smooth plastic or corrugated pipe of a larger diameter.
Inside, there is free space for the circulation of warm air entering from the insulated basement or heated in another way.
Warm air perfectly protects the water pipe from freezing. Although often it is additionally insulated with polypropylene or other material
Another option is to purchase ready-made insulated pipes of factory origin. They are sold fully ready for installation.
They are 2 pipes of different diameters, placed in each other. Between them is a layer of insulation. Often this method of insulation is called pre-insulation.
The option with finished pipes does not always satisfy the needs of a particular user - the diameter, type of material and cost can become a real problem for their purchase
The use of several methods of pipe insulation is due to the fact that all methods are imperfect and it will not be possible to apply them in all cases. The conditions of use in various households located in all regions of the country are radically different from each other. Therefore, to choose an option that is suitable for specific requirements.
Alternative insulation options
There are alternative methods of thermal insulation that prevent the occurrence of adverse effects. They are not applicable in all cases. Firstly, you can remove all the water from the system - no water, no problem. This method is applicable for houses not used in winter. It will help protect the system from damage in case of freezing water pipes.
Secondly, you can ensure the constant movement of water in the pipeline by opening a little tap. This is not difficult to do with permanent residence. But the option is dangerous - all of a sudden you have to leave home for a couple of days, and upon return there will be a surprise in the form of a damaged water supply.
Insulation helps get rid of condensate, which has a positive effect on extending the life of metal pipes
In addition to the ajar tap, constant pressure in the pipeline can be ensured by other methods. For example, use a special pump to increase the pressure of water in the system or add another element - the receiver. It should be cut into the pipe immediately near the pump. The receiver will maintain constant pressure, which will protect the system from freezing.
How to choose a heater for pipes?
If there is no way to hide water pipes into the soil to the required depth or if individual nodes go to the ground, then you need to choose a heater that is ideal for thermal insulation of water pipes. To do this, you have to choose the most optimal option, suitable for specific requirements.
Classification of types of thermal insulation
The market for thermal insulation materials abounds with offers. Among them, one can distinguish the time-tested options and the latest offers, which are distinguished by a higher price.
Heat-insulating paint is one of the latest tools to qualitatively insulate pipes without significantly affecting their total weight and thickness
Insulation for pipes can be divided by type of material into the following groups:
- fibrous, including mineral wool, fiberglass. This is not the best option for water pipes, because it will require additional waterproofing;
- polyurethane foam, available in solid and liquid state. This is the most popular option for warming water pipes - both shells and liquid spraying;
- heat-insulating paint, which appeared on the market recently. It, in addition to the main function, perfectly protects metal pipes from corrosion, but is an expensive material;
- polystyrene, used as a heater less often, it is very brittle;
- foamed polyethylene, well-established due to its excellent performance and ease of installation.
Paint is a new word in the world of liquid heaters. It contains special inclusions that provide excellent thermal insulation.
Heat-insulating paint is a ceramic heat insulator, inclusions are visible under the microscope, ensuring its unique properties
Material Selection Rules
When choosing the right material for the insulation of a local water supply system, you should focus primarily on the quality of the insulation. Indeed, among the offers you can see many inexpensive options that are attractive at a price. Here you need to carefully study the accompanying documentation and consider the appearance of the proposed product.
It often turns out that the cheapest option will not save water pipes from freezing. Therefore, no matter how limited the budget is - the quality of the insulation, this is not something to save on.
It is better to save on styling by abandoning the services of specialists. Choosing the right insulation, all installation work can be done by yourself
In addition to quality, the insulating material must satisfy the requirements for it:
- to withstand the conditions in which he has to fulfill his functions;
- to be simple and convenient to install, if you have to install yourself;
- have a long service life and protection from rodents and other pests;
- the price should be suitable, because the prohibitively high cost is not always justified for a certain material.
Sometimes it is necessary to additionally choose an option for waterproofing the insulated pipe in order to protect the material from getting wet, thus ensuring a long service life.
Most often for home use choose foamed polyethylene and polyurethane foam. These materials are not of the highest cost and ease of installation. They allow you to do all the work with your own hands, spending a minimum of effort - the fasteners are simple, and the manufacturer offers a suitable material for fastening the parts together.
Image Gallery
Photo from
Thermal insulation paint for water supply
Spray application
Insulating and aesthetic function
Painted water pipes in the basement
How to install thermal insulation?
You need to think about the thermal insulation of the local water supply at the stage of its construction. This is the right time to calculate, buy and lay everything. Moreover, if a team is working on the site, then it will take care of all questions on implementation. It is important for the owner to express their wishes about the type of material, its price and be sure to check that everything is done according to the wishes.
It is important to control the work of hired craftsmen so that they do not use cheap material, passing it off as an expensive analog
If you have to deal with insulation yourself, then, in comparison with the planning and calculations of the water supply system, this will turn out to be a simple task.
Depending on how and where the pipeline passes and which sections to be insulated, the actions themselves on laying the insulation will depend. The most common option is when the pipes go below the freezing depth or slightly higher. In the first case, they do not need to be insulated, and in the second, they select the most convenient option. The length of the pipeline is also important here.
Most often, a heating cable is laid on the water pipe. This is especially true in areas of entry into the house. During the installation of the cable, they use the recommendations of the manufacturer of this product, placing the turns at the required distance.
The heating cable allows you to adjust the temperature on the surface of the pipe thanks to the sensor. It can be turned on and off as you wish
Then, a layer of insulation is placed over the attached cable, fixing it properly. It can be polyurethane shells or foam plex segments. Having fastened the parts of the insulation to each other, you need to carefully glue the joints with a special adhesive tape.
Also on our website there is an article on how to properly carry out insulation of a water supply system in the ground. We recommend reading it.
Pipeline sections located in the basement are also insulated. To do this, take liquid polyurethane foam. And applied to the surface of the pipes. This should be done carefully, using personal protective equipment - you need to protect your hands, eyes, avoid contact with mucous membranes and respiratory organs.
1.5 cm thick polyurethane foam perfectly performs the functions of 5 cm of insulation, and paint - in a couple of mm
After drying, it remains to apply a protective paint to the surface of the polyurethane foam coating. This will protect against environmental factors and extend the life of the insulation.
Is it worth giving preference to cheap material for pipe insulation: in the video clip, comparison of two options:
Video clip on how to insulate the water supply for the winter:
Having studied the issue of choosing a heater and comparing the real needs of your water supply, you can choose the most optimal option. Moreover, many types of materials for insulation can completely do the installation yourself.
Even a novice will be able to deal with the intricacies of the process and follow the basic recommendations. Own warming will not only save on attracting specialists, but also be sure of the quality of work performed.
Have questions about the topic of the article? Please specify them in the box below. Or maybe you had to deal with the insulation of the water supply? Then share your experience with our readers. Tell us which of the insulation was chosen and why.