Readers ask: How To Lay Out Pex Tubing In Concrete?

Can PEX be buried in concrete?

Yes, PEX pipe can be installed under a concrete slab. PEX pipe can also be encased within a slab, which is commonly used for radiant floor heating. In cases where PEX pipe penetrates a concrete slab, it must be protected with a nonmetallic sleeve at the penetration point.

Does PEX need to be sleeved?

When PEX tubing is placed in soil and is used in potable water systems intended to supply drinking water to fixtures or appliances, the tubing or piping shall be sleeved with a material approved for potable water use in soil or other material that is impermeable to solvents or petroleum products.

Where is PEX tubing in concrete?

Using ground penetrating radar (GPR) to scan a concrete slab and locate radiant floor heat PEX tubing. Results are marked directly on the concrete with this real-time 2D method. Rebar is also marked to help with drilling. GPR is ideal for locating PEX tubes in concrete regardless if they are filled with air or water.

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Why is PEX plumbing bad?

PEX plumbing system has been used for more years and therefore its failures has been observed and known. Its major failures is linked to piping and fitting. Piping fails when the pipes are exposed to chlorine that is within the water, exposure to direct sunlight before its installation.

What type of PEX is best for underground?

High-Density Polyethylene (HDPE, often just “PE”) has become one of the most popular choices for underground service lines, thanks to its corrosion-resistance, durability, and competitive price. Some codes require that buried plastic lines under 2″ in diameter be PE (rather than PVC).

Why is PEX banned in California?

PEX was banned in California due to some concerns about toxic materials leaking through the pipe and into water. Through various national laboratory tests, PEX has proven to be completely safe and durable.

Can I use PEX for underground water line?

Can pex pipes be used underground? – The answer is YES – It can be used underground. It should be buried below the frost line and best if bedded in sand or stone dust. The Advantages Of Using PEX Tubing are: It’s very flexible.

Can you run PEX inside PVC pipe?

The 1″ pex in 1.25″ pvc gives you about 1/8″ clearance in diameter. You should plan on 50 yds of sand. Any rock damage or distortion of that pipe and you‘ll never get it out. Seems to me that it would be very difficult to push/pull 1200′ of pex through PVC pipe.

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How do you know if concrete is radiant tubing?

Re: How to find existing radiant heat tubing in cement slab



The tubing usually is at the bottom of the cement tied to the rebar. It would usually be spaced 12″ on center. If you do cut the tubing you can put mechanical couplings on the pipe for repairs. It will be best to use the same name parts as the tubing.

How do I test my underfloor heating pipes?

As the pipes are hidden beneath flooring rather than exposed like radiators, one of the best ways of verifying the performance of an underfloor heating system is by using thermal imaging technology. A thermal imaging camera can detect heat patterns through flooring, thereby showing where a system is effective.

What are the pros and cons of radiant heat?

Pros and Cons of Radiant Heat

  • Uniform heating. The biggest benefit of floor-heating systems is their ability to uniformly heat a room and floor.
  • No maintenance. Electric floor-heating systems do not require maintenance.
  • No noise.
  • Non-allergenic.
  • Energy efficient.
  • Easy to install.

What size PEX tubing should I use for radiant heat?

The most common sizes of PEX Pipe for Radiant Heat Systems is 3/8 Inch, 1/2 Inch, 5/8 Inch and 3/4 Inch. Generally, for residential Radiant Heat Systems we recommend 1/2 Inch PEX Tubing. The PEX Tube size dictates the flow rate that can be achieved and thus the maximum loop length of the pex tube.

Can you put heated floors on concrete?

You can install floor heating with your existing concrete floor or subfloor. If you already have a polished concrete floor, you may be able to fit insulation and a low-profile electric floor heater before adding a new layer of leveling compound and a polished concrete overlay.

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