Can plastic pipe be used for central heating: Is it common practice to use plastic pipes and push on joints in a new Extenstion

Is it common practice to use plastic pipes and push on joints in a new Extenstion

I’m having a new extention built which will include an ensuite and a new combination boiler.

I have noted that the builder has used plastic pipes connecting to some copper pipes using push on connectors, also some plastic pipes are reccessed into the brickwork and will be used for a radiator. Is this now common practice? In my day it was all copper pipe. Will these pushon’s withstand water pressure?

Any advise appreciated?

16

16 Answers from MyBuilder Plumbers

Best Answer

Aztec Bathrooms

Morpeth • Member since 8 Mar 2011 •

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Hi

Plastic pipe has pretty much taken over from copper except for gas supply and pipework within a few metres of the boiler. The joints are pressure tested to well in excess of a domestic installation, somthing like 10 bar, or 100 psi. As long as they have been installed correctly and are well supported, they will be fine.

2011-08-05T22:10:03+01:00

Answered 5th Aug 2011

building

Shadwell • Member since 7 Dec 2009 •

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Hi,

Plastic pipes are used more and more these days, they are horrible, bulky looking things!!! so why do we (or some people) use them? you may ask.

The reason is that they speed up the installation time, hence the name speed-fit.

If out of sight and fitted correct they are fine.

If not they are poor and so is any tradesman who would use them ( in my opinion).

I only use them as a temporary fitting or in a very rare event. ie: cant get the water turned off, which means i cant solder a copper fitting.

When they was first brought in to the building trade, they was very costly but the more they are used, the price starts to come down.

As the cost comes down and the plumbers are quoting for work, there are two main items of an estimate to consider:

1 cost of goods plastic v copper

2 cost of labour speed-fit v non speed

I would ask anyone doing plumbing, what they are quoting for using.

I once fitted a bathroom for a customer who was high up in an insurance company,

I was explaining the plastic v copper plumbing and he said let me stop you there.

Our company had a meeting yesterday and the whole meeting was based on “how much money (in claims) do push-fit plastic fitting cost our company??

This left me only to say ” I REST MY CASE “

Hope this is of help

Chris Devlin

2011-08-05T22:10:03+01:00

Answered 5th Aug 2011

cheshire bathrooms and wetrooms

Wirral • Member since 30 Jul 2011 •

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push fit pipe is very common theese days its quicker and easier than copper. reccessing them into brick work is fine and plastering over is all ok as for holding the pressure that is no problem as long as they are put togher correctly and have used inserts in the pipe

2011-08-05T22:10:03+01:00

Answered 5th Aug 2011

Deans Heating

Hereford • Member since 22 Jan 2010 •

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I would use plastic for heating systems as it holds the heat more efficently.

I would not use plastic in the country but in town it should be fine

2011-08-11T09:35:01+01:00

Answered 11th Aug 2011

JSG Plumbing & Heating Ltd

Swanage • Member since 28 May 2009 •

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In a word – yes it is fine – The way I see it – if you want to cut down on the installation time and there are some long runs to be perhaps hidden/recessed then plastic is the way to go. You can cut down on the number of joints used and therefore cut down on the possibility of any leaks. That said if you can see the pipe work then copper if definitely the way to go – looks a bit smarter. Cost wise however – copper is expensive.

Jon

2011-08-05T22:10:03+01:00

Answered 5th Aug 2011

Blake Ecotec Ltd

Pawlett • Member since 8 Feb 2009 •

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Yes, usually plastic will be fine to connect up a radiator. The cheapest Plastic PEX (PolyEthylene X linked) or PB (PolyButylene) pipe and fittings can generally withstand 6 bar at 65 degrees and 3 bar at 92 degrees. The most pressure and temperature in a failure mode your will ever see on a modern sealed heating system is <90 degrees and 3bar.

2011-08-05T22:10:02+01:00

Answered 5th Aug 2011

Bristol-Heating

Bristol • Member since 13 Oct 2007 •

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Hello there is no problem with plastic pipe and push fit fitting, plastic is now much cheaper than copper.

The pipe work should be pressure tested to 10/12 bar after first fix.

The gas pipe MUST NOT be plastic or push fit fittings.

The boiler must be connected with copper pipe.

Hope this helps!!

2011-08-05T22:10:03+01:00

Answered 5th Aug 2011

TWM Construction

Cardiff • Member since 12 Jun 2008 •
No feedback yet

Yes this is ok although I am not a big fan of plastic it is used throughout the building industry and is certified and as long as it is fitted correctly should last as long as copper. One point you need to check is that the plumber put clips on all the plastic joints as this ensures that the fitting cannot come lose or blow

Regards

Dave Price

Twm.Construction

2011-08-05T22:10:03+01:00

Answered 5th Aug 2011

MJM Plumbing Services

Bexley • Member since 13 May 2011 •

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Hi Jivebunny,

With cost of copper at an all time high it makes financial sense to seek an alternative. Plastic pipe is much cheaper, easier and quicker to install. I always ask the customer if they have any preference.

I understand that all pipework which can be seen should be in copper and the rest in plastic.

I have no experience of this but it has been known for plastic pipe to have been knawed through by vermin, something which would not happen with copper.

Regards

Malcolm

MJM Plumbing Services

2011-08-05T22:10:02+01:00

Answered 5th Aug 2011

Foster Electrical & Property Maintenance

Glasgow • Member since 25 Mar 2009 •

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Yes ,normal practice now usually after one meter from boiler

Steve

2011-08-05T22:10:02+01:00

Answered 5th Aug 2011

java group ltd

Plymouth • Member since 1 Mar 2010 •

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hello it is common practise with the cost of copper the plastic will last no problems if fitted corectly

normally plastic is hidden and any pipework on show would be copper

regards luis

java

2011-08-05T22:10:02+01:00

Answered 5th Aug 2011

Cannon Preservation Ltd

Colchester • Member since 21 May 2011 •

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Hi

Alot of plumbers have opted for the push fit plasyic in relation to copper and i think its a great option.

BUT be careful because some insurance policys will only cover copper plumbing work! talk to your household insurnace company!

I know one very well known company that installs and gives cover will not cover plastic pipework.

Good luck.

Scott.

2011-08-05T22:10:02+01:00

Answered 5th Aug 2011

db advanced finishes

High Wycombe • Member since 27 Sep 2010 •

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speed fit connectors and plastic pipe are sometimes frowned upon by old school plumbers but have their uses in new builds and extensions for ease of installation. however i would NOT expect to find them on heating systems (alarm bells ringing) as i wouldnt use them myself for that purpose

2011-08-05T22:10:03+01:00

Answered 5th Aug 2011

ATS Building Services

Stirling • Member since 16 Oct 2009 •

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Yes its more common now to use plastic pipes, they are safe and sound to use, if you have any concerns call Building Control at your local Council to come and check on the works to date, the Builder wont mind as he should merely be following your Architects plans.

2011-08-05T22:10:03+01:00

Answered 5th Aug 2011

kevin cassidy building contractors

Accrington • Member since 16 Dec 2010 •

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Yes it is common practice with the exeption of pipework within 1mtr of the boiler and all gas pipes.

2011-08-05T22:10:03+01:00

Answered 5th Aug 2011

Potts-and-Pottsette

Gargrave • Member since 27 Jun 2019 •

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Plastic Push fit pipe is more commonly used these days and is fine to use in most water installations, as long as it is installed properly and all joints are checked and tested prior to it all being covered in.

Plastic can’t however be used in all areas as certain areas still need to be copper pipe regardless. For example immediate flows and returns from a boiler up to a meter and any Gas Pipe installations must be fully run in copper.

Cost wise there isn’t much difference between copper and plastic. Basically Copper pipe is expensive but fittings cheaper, whereas plastic pipe is cheaper but fittings expensive. The biggest difference is in the labour time spent on each, you’ll be paying more labour for copper as this takes longer to install as its less flexible than plastic pipe.

Both work just as well and do the job fine as long as they’re installed correctly, all joints are checked that they’re pushed in fully and pressure tested.

Mostly the decision on if copper or plastic is used depends on the time scale of the work to be completed and or the preference of the trades person or client. I myself prefer to use copper pipe and fittings rather than plastic but have fitted plastic quite happily when the customer wants it that way.

2020-04-29T17:05:02+01:00

Answered 29th Apr 2020

Copper or Plastic Pipes for Radiators? – Plumbing Wizard

Pipes are one of the most important components of your plumbing system, without them, you would not have a system at all. They make sure water gets from point A to point B, and that is it!

So why does this topic matter? The answer is simple: pipes can be made out of a variety of materials, both options work well in different ways and serve their own purposes with each option having its own pros and cons.

In this article, we will explore plastic vs copper pipes for radiators and central heating and which material you should choose based on your needs.

How Long Do Copper Pipes Last?

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How Long Do Copper Pipes Last?

Can You Use Plastic Pipe for Radiators?

For decades copper has been the go-to material for all heating installation pipes but plastic pipes have become increasingly popular and are now often used for radiators.

In fact, plastic is now common in almost all plumbing fixtures although there are limits. Plastic pipes must not be used to connect a boiler, nor must they be used for Gas.

Copper or Plastic Pipes for Radiators?

Although plastic is a great alternative to copper for general pipework, for any pipework that attaches directly to a radiator, I use copper. Why? Two reasons.

One – Aesthetics

The first reason is that they look better – the pipes are straighter and if you intend on painting them, you will get a much nicer finish when painting copper.

Two – Strength

Secondly, copper is stronger and although both types of pipes are prone to leaking when knocked etc. Copper will stand up to a little more punishment as the joints are surprisingly a little more flexible making them more likely to hold.

Copper or Plastic Pipes for Underfloor Heating?

Although we feel that copper should be used to connect directly to radiators or be used for any other visible pipework, underfloor heating should be installed using plastic pipes.

Plastic pipe is more flexible than copper and due to the layout of underfloor heating, which is laid in patterns, copper just is not suitable due to its rigidity making it too much work to make all of those sharp turns.

With the number of joints necessary to adequately lay an underfloor heating system in copper, the risk of leaking is increased dramatically.

Copper or Plastic Pipes for Central Heating Pipes?

Although plastic does have its advantages in being easy to install and flexible enough to go through joists etc, personally, I stick to copper wherever possible. I think that it is quite telling that it is a requirement that copper must be used for at least 1m before connecting to a boiler.

Due to it largely being cheaper, plastic is now often used in new building developments. Although for me, even when it is installed correctly, it is only a matter of time before you are just waiting for it to fail.

Opinion: I feel that by using the cheaper alternative, the call for plumbers will eventually increase as they will be needed to address and fix all of the failed plastic pipework and fittings.

Pros & Cons of Plastic & Copper Pipes

As we have mentioned, both types are great for different applications, but they do also have their drawbacks, below we are going to have a look at the pros and cons of each material when used in plumbing.

Plastic Pipes

Plastic plumbing is a great option for those who want to install their own plumbing. It is quiet, corrosion-resistant and easy to work with, but it has some drawbacks too.

For one thing, plastic pipes are not as long-lasting so you may find yourself replacing them in the future or paying more for repairs because they are prone to breaking down faster than other materials like copper pipe.

The joints on these pipes can also be inflexible which means that they might break if there is any give when installing them into tight spaces or where water pressure changes quickly.

Finally, while many people think of PVC piping as an inexpensive way to get your home set up with plumbing fixtures, this material actually looks cheap and unattractive so for any pipes that are on show, I would replace them with copper.

Pros
  • Quiet
  • Corrosion Resistant
  • Easy to Install
  • Cheap
  • Doesn’t Freeze as Easily
Cons
  • Not Long-Lasting
  • Inflexible Joints
  • Potential Health Risk
  • Does Not Fit into Tight Spaces
  • Looks Cheap

Copper Pipes

If you have a sealed system with no F&E tank, the best way to get the sludge cleaner into the system is via one of the radiators themselves which can get a little messy.

Copper pipes are a great option if you are looking for a long-lasting and clean look in your home. Copper is often selected because of its longevity, easy installation, and ability to withstand vibration.

Keep in mind though that copper piping is more expensive and difficult to install and can be susceptible to corrosion over prolonged periods of time.

Pros
  • Long-Lasting
  • Fits into Tight Spaces
  • Resists Vibration
  • Clean, Looks Good
Cons
  • Susceptible to Corrosion
  • Difficult to Install
  • More Expensive
  • Can be Noisy

Conclusion

Call me old school, call me whatever but I prefer to use copper over plastic anywhere it is possible and will only use it anywhere that is visible!

Don’t get me wrong, both materials have their uses in traditional and modern plumbing and heating systems. Copper pipe is best for connecting to radiators and plastic is undeniably better for underfloor heating systems.

Copper and Plastic pipes can also be combined for the best of both worlds. By using copper pipe in places that work well with it, coupled with plastic pipes where necessary – you should have an effective piping system that is versatile enough to meet any need!

Plumbing Wizard Tips

“For a smooth and clean finish, keep any pipework that is visible in copper!”

“If you do not like the noises of creaking pipes as they warm – install plastic!”

“In areas where the water quality is poor, use plastic pipes as they are resistant to corrosion!”

“If you are unsure or unable to fit the pipework yourself, speak with your local plumber for their advice!”

Frequently Asked Questions

Are plastic radiator pipes any good?

Plastic radiator pipes are fine, and they will do a job although they look awful, and the joints are not as flexible. A little knock could cause a serious leak.

Is it better to use copper or plastic pipes?

Both materials have their uses and can be used in conjunction with one another. Plastic is obviously more flexible than copper and can be bent into shape easier and copper is straight and is more aesthetically pleasing. More modern installations use plastic out of sight and copper inside living spaces.

What is the best pipe to use for central heating?

In my opinion, copper is the best all-around material for water installations including heating systems except for underfloor heating. Underfloor heating should be laid in plastic pipe.


About Me

I’m Lee the Plumbing Wizard. I’ve been a plumber for over 40 years and have seen it all. People used to call me a magician because I could fix things so easily – hence the name Plumbing Wizard. I’m always happy to help, so if you need any advice or just someone to talk about plumbing with, don’t hesitate to get in touch!


More You Might Like

Selection of pipes for heating in an apartment building | Information

Going back

The market abundance of pipes for heating systems baffles a person who is not a professional in this matter. Products from which material are more preferable in cases where it is planned to repair or replace the heating system in a single apartment or entrance?

Types of pipes

For the installation of heating systems, manufacturers currently offer pipes made of the following materials.

  • Copper. The material is characterized by increased resistance to corrosion and a long period of operation. Pipes are offered in two types: annealed and untreated. The first is offered in bays, the second in measured segments. In heating systems, only annealed pipe is used. For internal laying, it is required to wrap the pipes with a PE coating to prevent thermal deformations.

Conclusions

After analyzing the performance characteristics of pipes made of the materials discussed above and comparing them with the requirements that apply to them when arranging a heating system in an apartment building, we can state the following:

  • Copper pipes. The assembly of a single system of pipes with different electrochemical activity leads, without fail, to the acceleration of corrosion processes on materials that are more active.

Therefore, according to the technology, it is required to avoid in heating systems the location of steel pipes (except those made of stainless steel), as well as those made of zinc and aluminum after copper pipes (in the direction of the incoming coolant). In order not to cause premature failure of the former as a result of corrosion.

If products from the above materials are required to be installed after the section where copper pipes are laid, they must, without fail, provide passive anodes (magnesium, for example). In addition, copper pipes are very susceptible to stray currents. Based on this, careful grounding of such pipelines is required.

  • Pipes made of alloyed steel (“stainless steel”) are similar to copper pipes, except for stray currents. Stainless steel pipes are cheaper than copper, and installation with press fittings is simple and takes little time.

  • Galvanized pipes. When choosing this material, it should be remembered that in district heating networks various additives are constantly added to the used heat carrier. Their presence provokes the destruction of the protective layer (zinc coating) with the loss of a significant amount of precipitation. In addition, products resulting from chemical reactions occurring in such pipes (insoluble salts, zinc particles, etc.) have a negative effect on equipment (radiators, coolant treatment plants, etc.).

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Heating pipes, which is better for a private house. Characteristics of pipes, installation features of the heating circuit and underfloor heating

March 24, 2022

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Reading time:
12 minutes

Content

Selection criteria

Types of modern pipes

Diameter size

Heating system installation rules

Underfloor heating installation

Briefly about the main thing

Installation of a heating system in a private house involves the choice of a boiler and quality materials. Which pipes are better to use for heating a private house, every developer thinks. Without knowing the characteristics of the material of manufacture, you can spend extra money on expensive pipes. Or, having bought cheap heating pipes, regret and spend additional money on replacing a poor-quality line with a more durable one. Or maybe in the beginning all calculate and make the best choice, getting the best result. What pipes to choose for heating a private house?

Types of pipes with adapters

Criterias of choice

Pipes for radiators are selected according to the following indicators:

  1. Internal or external mounting method.
  2. Estimated circuit pressure capacity.
  3. Centralized or stand-alone system.
  4. Gravity or forced circulation.
  5. Temperature maximum in the circuit.
  6. Configuration – number of turns, bends, bypasses.

Type of pipe material

In addition, each of the materials has a linear expansion when the coolant temperature rises to 60°C and above.

Line length increase for every 10 m:

  1. Steel pipe – up to 6 mm.
  2. Copper – 9 mm.
  3. Aluminum – 13 mm.
  4. Polypropylene – 80 mm.
  5. Polyethylene – 100 mm.

Coiled soft plastic pipe

Types of modern pipes

Hardware stores offer a choice of metal and plastic pipes for heating. The heat in a private house depends on their quality and reliability. What pipes are used for heating?

Copper

If the owner decides to use copper for heating, it is better to take annealed ones. The material without annealing is very strong, but completely devoid of flexibility, therefore brittle.

Advantages of annealed copper pipes:

  • Withstand pressure of 22 MPa.
  • Temperature shock resistant.
  • Light weight. The high density of copper makes it possible to produce a pipe with thin walls, which facilitates the weight of the product.
  • Perfectly smooth inner surface does not create resistance to the circulating coolant. The same property practically does not delay any inclusions in the liquid, so build-ups or congestion do not form on the walls.
  • Easy to assemble due to plasticity of the material. You can make bends of any configuration.
  • High thermal conductivity allows rapid heating of the system and rooms.
  • There are no toxic fumes from the surface, so installation is allowed in children’s rooms.
  • Low linear expansion allows for use in underfloor heating.

Different diameters of the copper pipe

The only downside is the high cost, so the choice of copper for the pipeline of an autonomous heating system depends only on the financial capabilities of the owner of a new house.

Reference: The increased thermal conductivity of copper has a positive effect on operation. Rapid heating and cooling does not destroy the line. Copper is able to withstand cycles of freezing and thawing many times.

Steel

Best pipes for heating due to low expansion coefficient. For a private heating circuit, a galvanized version is usually chosen. They are convenient to use, sizes from 4 to 12 meters with an outer diameter of 32, 25, 20, 16 mm are on sale. The ends are produced without thread and with cut short thread. The steel version has a number of advantages compared to other materials:

  • Durable hard shell resists mechanical stress. Withstands hydraulic shocks, bends, creases, while remaining intact and without cracks.
  • Withstands pressure and temperature fluctuations.
  • The low coefficient of thermal expansion makes it possible to mount a warm floor from them into a concrete screed.
  • Service life several decades.

Strong steel pipes for heating

The disadvantages include some difficulties in operation and installation:

  • If I use plain water instead of a prepared coolant, then in the process of circulation there is a possibility of destruction of the galvanization, corrosion and perforation of the walls, which will lead to leaks.
  • The complexity of the installation processes – they use a welding machine, a pipe bender, the thread is wrapped with fum tape or other seals.
  • Welded assemblies do not hold water hammer well.
  • Strong thermal conductivity – the surface heats up to the temperature of the coolant, therefore it can cause burns.

Steel pipes are chosen for heating a private house. And developers prefer to install central heating pipes in municipal housing systems because of the long service life and low maintenance costs.

Steel corrugated

Corrugated steel radiator heating pipe differs from other materials by its ability to bend in any direction at different angles. It can be twisted with a ring or a spring, so the corrugation is almost perfect in the installation of a warm floor. In addition, it has a number of other advantages:

Corrugated steel coil

  • Virtually does not retain scale on the walls, so the period between system flushes increases significantly.
  • Rigid surface resists water hammer and any pressure drop.
  • Increased thermal conductivity creates conditions for saving resources. Rapid heating of the shell contributes to high-quality heat transfer into space.
  • Low coefficient of thermal expansion makes it suitable for installation in concrete screed.
  • The industry supplies corrugated steel in a reel of 100 m, which is enough for a warm floor on the first floor of a country cottage.

Installation is carried out in the same way as a conventional steel one using fittings and seals.

This is how a corrugated steel heating pipe bends

Polypropylene

When the question arises before construction: which plastic pipes are better for heating in a private house, the owner will prefer to choose polypropylene material. The reason for this is a number of advantages:

  • Polypropylene is neutral to almost all chemical compounds, so you can not be afraid of decomposition and reaction with detergents.
  • Very abrasion resistant, will not break down from heat, pressure or water hammer.
  • Does not evaporate at all from the surface of active elements – suitable for use in children’s rooms. Does not create allergic reactions.
  • Safety against injury due to low thermal conductivity. The pipeline connected to the radiator for heating does not heat up to critical levels, even a child can take it.
  • The inner walls are smooth, which eliminates the accumulation of small inclusions and the formation of blockages. Does not require flushing, except for the planned one.
  • Light weight makes it easy to transport and hang on walls.
  • The average cost is available to an ordinary developer.

Despite the numerous advantages, polypropylene has several disadvantages:

Pipes made of cross-linked polypropylene

  • Linear expansion properties do not allow mounting in a concrete pour.
  • The installation of the circuit should be located in shady places, as polypropylene reacts to ultraviolet rays, from which it becomes brittle and destroyed. For the same reason, pipes cannot be kept in open areas under the sun for a long time.
  • Not resistant to frost – not suitable for outdoor applications.

Installation of polypropylene pipes for private heating is carried out using a soldering iron for plastic and special fittings. On straight sections they are connected by soldering with tongs without the use of fittings. No insulation is required, the exterior is quite suitable for interior rooms.

Polyethylene

Pipes for the heating system are laid from cross-linked polyethylene of three modifications:

  • REX-A – pyroxides cross-linked by laser are added to polyethylene. Highly flexible, sold in reels.
  • REX-B – three-layer wall made of polymer with the addition of silane. Rigid in bending, used in straight sections.
  • REX-C – X-ray stitched. Low strength and service life.
  • REX-D – modified with nitrogen radicals. Pretty expensive stuff.

To determine which pipe to choose for home heating, consider the positive performance characteristics of polyethylene:

  • Safety for residential use. It does not evaporate harmful substances at all, it is environmentally friendly, does not cause allergic reactions.
  • Does not react with chemicals, can be washed with household products.
  • Design service life 50 years.
  • Can be installed with metal fittings.
  • Withstands pressure up to 10 bar and temperatures up to 115°C.

Of the minuses – the largest coefficient of thermal expansion, therefore, it is mounted only in open areas. Pouring with concrete mortar is not allowed, firmly holding concrete deforms the structure.

metal-plastic

These pipes are best used for heating. This is the most popular material widely used in private construction and public utilities. Ease of installation and low weight made it in demand at home, when the owner wants to handle the installation himself. The multilayer structure of the material includes an outer polymer layer, the middle one made of aluminum acts as a reinforcement, and the inner one is made of plastic.

The advantages of using metal-plastic for heating:

  • Sold in any building market.
  • Budget price.
  • Low linear expansion.
  • The perfectly smooth inner wall does not trap any deposits. Does not require additional cleaning during the heating season.
  • Mechanical resistance.
  • Flexural ductility. No need to compare with corrugated steel, turning 90 degrees is enough – more will break.
  • Absolute resistance to corrosion, as the inner surface is plastic.

Of the minuses, fragility – the design service life is up to 15 years. In addition, not all fittings or adapters are suitable for installation.

Attention! Metal-plastic material breaks down when the temperature rises above 120°C. Warm up the coolant no more than 85 ° C, then the service life increases.

Aluminum

Pure aluminum pipes are not usually used for home heating. Two-layer radiators are made of aluminum, which are allowed to be connected to pipes for the heating system.

Diameter size

Using the example of a polypropylene pipe for heating, let’s look at the different contours and diameters:

  • A line with a diameter of 16 mm is recommended for connection to two radiators.
  • For a 7 kW circuit choose a diameter of 20 mm.
  • Thermal output 11 kW with 5 to 8 radiators, assumes a diameter dimension of 25 mm.
  • The 19 kW circuit for 12 batteries is assembled from a 32 mm pipe. Such a system completely heats a cottage of 100 square meters. m.
  • Diameter 40 mm is suitable for a circuit for 20 batteries, with a boiler power up to 30 kW.

Maintaining a constant temperature in the system is created using thermostats.

Heating system installation rules

Having considered the possible options and having decided on the choice of pipes for the heating system of a private house, they begin to implement the project. On hand there is a ready-made plan for the location of devices and the direction of the wiring of the main. A distinction is made between a single-pipe system, when the coolant makes one revolution in the circuit and returns to the boiler, and a two-pipe system, where the liquid leaves in one ring and returns in a different way.

Installation of plastic with a brass fitting

What you need for installation:

  1. Hacksaw for metal.
  2. Sandpaper or file.
  3. Gas key 2 no.
  4. Pipe bender for steel.
  5. Plastic pipe cutter.
  6. Welding machine for steel
  7. Open flame soldering iron for plastic or hot tongs.
  8. Fittings, adapters, tees, plugs.
  9. Pencil or marker.

Stages of metal-plastic installation:

  • Measure the heating pipe according to the existing plan and cut it into the necessary pieces.
  • Thoroughly clean end burrs with sandpaper.
  • Mark the depth of the seal on the outer surface and mark with a marker.
  • Heat the inside of the elbow or other fitting with a soldering iron.
  • Insert the butt end into the heated seat and press firmly.
  • If the fittings are brass, the process changes slightly. Plastic is put on the tee and pressed with heated tongs, making sure that the heating time corresponds to the instructions. An underheated joint will leak, and an overheated one will melt.
  • Plastic pipes are connected to aluminum heating radiators using brass or steel fittings.

Press tongs for crimping plastic joints

Attention! Crimp the solder joint moderately. Strong compression threatens to deform the still warm material.

Stages of installation of steel pipes for heating:

  • As in the previous case, first cut the pipe for heating the house into pieces of the desired length according to a given project.
  • Household appliances are connected with couplings. A compression ring is put on the end, twisted and inserted the second part. Then they are crimped together and the nut is tightened.
  • In some cases, end welding is used, but it is better not to do it yourself if there is no access to hot work.

After completing all the work on connecting to the radiators and the boiler, the system is filled with coolant and a test run is made. In the process, each docking node is carefully checked for leaks. Any deficiencies found are corrected immediately.

Installation of a warm floor

Types of pipes for heating a private house with underfloor heating are best steel and copper options. Having the lowest coefficient of linear expansion, they are mounted under a concrete screed. Heating pipes are used with a diameter of 16 or 20 mm.

Installation of underfloor heating

Installation features:

  • The layout scheme is designed in advance to understand how long the collector will be, how many segments need to be prepared.
  • To connect the circuits, they put a comb according to the number of outlets. Each room is a separate circuit.
  • The contour in the rooms is laid out in increments of 15 cm, in the bathroom – 10 cm, in the boiler room – 20 cm.
  • The layout of the contour starts from the comb, is carried out along the intended route and the end is also brought to the comb. To distinguish between the supply and return outlets, they are marked with colored insulation, for example, red input, blue output.
  • Connection to manifold with eurocone fitting.
  • In the area of ​​damper plates (sedimentary seam), a protective sheath is put on the pipe.
  • The finished structure is pumped, checking for leaks.
  • Each room is poured with concrete mortar in turn, dividing boards are placed to fix the solution.

Pipes for a permanent heating system with underfloor heating are securely fixed under the screed and will last all the time the house is used.

Briefly about the main

Pipes intended for high-quality heating are selected according to the properties of the material of manufacture.