How do you install pex tubing on a concrete slab?
- On top of the compacted earth or sand, install a vapor barrier.
- Lay down at least 2″ of rigid foam insulation. …
- Install the wire mesh or rebar for the concrete slab.
- Attach the tubing to the wire mesh or rebar using plastic zip ties.
- On top of the compacted earth or sand, install a vapor barrier.
- Lay down at least 2″ of rigid foam insulation. ...
- Install the wire mesh or rebar for the concrete slab.
- Attach the tubing to the wire mesh or rebar using plastic zip ties.
How to install PEX tubing with a PEX expander?
How to Install PEX Tubing with a PEX Expander
- Measure Your Lengths of PEX Piping…Twice. First, measure and cut the length of PEX you need. ...
- Add the PEX A Expansion Ring. The next step involves placing your expansion ring on the cut end of your PEX. ...
- Make the Connection. ...
- Start the Process of Expansion. ...
- Don’t Stop at the End. ...
- Final Note About Temperature. ...
How to connect PEX tubing?
Tips for Making PEX Connections
- Wherever possible, bend the tubing to change directions, rather than making right-angle bends with fittings.
- Use manifolds to feed multiple PEX lines from a single supply pipe.
- Group plumbing fixtures together whenever possible.
- Minimize tubing lengths when planning your layout.
- Choose the right PEX pipe diameter for the application.
How do you connect copper pipe to PEX tubing?
- Every connection must have one male fitting and one female fitting in order for the two fittings to attach. ...
- The sizes of the threaded ends must match in order for the PEX fitting to twist onto the copper pipe fitting.
- You can connect pipes of different sizes as long as the threaded ends are the same size. ...
How to make expansion connection for PEX tubing?
Expansion Method: This method works with an expansion tool to make connections. Here you have to insert a plastic crimping ring on the PEX pipe. Then take the expansion tool and insert it into the pipe. Once you expand the pipe up to the mark, set the fitting into PEX. Finally, move the already inserted plastic ring over the fitting area. Push ...
How thick should PEX tubing be?
How to install a PEX coil?
How long can you leave a PEX slab exposed to sunlight?
What is the best way to seal a concrete slab?
What is the minimum thickness of a slab?
What is the thickness of a concrete slab?
How thick should a concrete base be?
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Can you put PEX directly in concrete?
Never use PEX fittings of any kind (brass or poly) in a concrete slab unless it is necessary for a leak repair.
How long does PEX tubing last in concrete?
Additionally, long-term testing programs on PEX have shown that it has a potential lifespan of more than 100 years. So, while copper systems may have to be re-piped every few years or decades due to corrosion and pinhole leaks, a PEX system can last 10 times longer — or more.
Does PEX need to be sleeved in concrete?
A pipe sleeve is a pipe of larger size that protects a smaller pipe inserted in the inside. In addition to protection, the sleeve pipe allows smooth flow in the desired direction. If you are wondering if PEX needs to be sleeved, the answer is no.
How do you run radiant heat in concrete?
0:289:57Radiant heating in a concrete slab. Let us show you how easy it can be to ...YouTubeStart of suggested clipEnd of suggested clipWe recommend two to three inches of insulation. Below. And on the sides of the slab. While twoMoreWe recommend two to three inches of insulation. Below. And on the sides of the slab. While two inches is pretty standard some states now recommend three inches below a heated slab.
Where should you not use PEX?
You can't install PEX in high heat areas like near recessed lighting. This also means you can't connect PEX directly to a hot water heater, but you can use a connecting material to do this. PEX is semi-permeable, which means liquid can enter the pipe. When it comes to safety, PEX isn't antibacterial.
What is black PEX pipe used for?
PEX pipes often replace copper for hot and cold water in residential retrofits. They are easy to cut, install and connect and less costly than copper. These lightweight flexible pipes for water easily maneuver around obstructions without elbow fittings.
Is PEX-A or B better?
Flexibility - PEX-A is the most flexible, allowing for it to be fastened by cold expansion, which allows the end to be fluted prior to inserting the fitting. PEX B is not expandable and you should never expand the end of a PEX-B pipe. Kink-Resistance - PEX-A has the greatest resistance, PEX-B the lowest.
What are PEX sleeves used for?
PEX-A plastic expansion sleeve is used when you are using an expansion tool to fit the piping over the fitting, rather than crimping a ring around the pipe onto the fitting. The PEX method, aka Wirsbo or Uponor, is a superior method of connecting plumbing.
How far apart should PEX tubing?
PEX tubing is usually installed within a distance of 8". Closer spacing (usually no less than 4") can be applied to areas with higher heat loss or floors with lower heat conductivity. Length of each tubing loop - The length of a tubing loop is directly correlated to the flow rate and heat output.
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.
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.
How thick should concrete be over radiant heat?
A: As a rule of thumb, Gypsum Concrete should be installed at ¾” thick over the top of the radiant heat tubes. The industry standard for radiant heat tubing is 5/8” Pex tubing (O.D. of approx ¾”), therefore a 1-1/2” thick Gypsum Concrete topping is most typical.
How long will PEX last underground?
Nowadays, PEX tubing is quickly replacing traditional copper and galvanized steel pipes and is an exceptional option for underground piping. PEX tubing is approved for direct burial outdoors. PEX has a life expectancy of 40-50 years, made possible by its durable and non-corrosive materials.
How long will PEX pipe last outside?
PEX: Due to its flexibility and durability, PEX piping should last at least 50 years. PVC / CPVC: Under typical conditions, these pipes should last up to 100 years. Keep in mind that PVC pipes are often used for drainage because extreme heat can damage them.
Does PEX deteriorate?
Chlorine degradation of PEX occurs when the chlorine in drinking water, which is added to keep it clean and safe for human consumption, attacks the PEX piping, breaking down molecular bonds, resulting in micro-cracks that gradually expand to the point of a pipe failure.
Can PEX piping be used underground?
Among the three types of PEX, two types, PEX A and PEX B, are suitable for burying underground. These two PEX tubing options have enough flexibility to allow them to withstand the fluctuations of water freezing and thawing, but should be buried below the frost line.
What is PEX tubing?
PEX tubing is a great choice when running water to new fixtures, remodeling, or even repiping. Installing PEX does not require glue or soldering; instead, it uses fittings that require cinch clamps or copper crimp rings that hold the pipe onto the fittings. There are also push-fit fittings that can be used when installing PEX.
How often should you run PEX tubing?
Run the PEX tubing: PEX needs to be supported a minimum of every 32 inches when running horizontally. If running vertically, it should be supported every 4 to 6 feet. The straps should be plastic or metal that is designed to work for plastic pipe. PEX is not meant to be pulled tight, so leave slack for expansion and contraction.
How to test a PEX ring?
Test: Turn the water on, and inspect each fitting for leaks. If any leaks occur, you may have to remove the fitting and use new crimp rings or clamps. They do make a crimp ring removal tools that can make removing a PEX ring easier, or you can carefully grind off the ring or cut it with a small hacksaw. When the fittings are re-installed, check for leaks again and then once again after a couple of hours.
How to use a cinch clamp?
If you have the cinch clamp tool, you will need to use only cinch clamps. Slide the clamp or crimp ring onto the pipe then slide the pipe onto the fitting all the way. Position the clamp or crimp ring at between 1/8 inch to 1/4 inch away from the end of the pipe, and use your tool to tighten the clamp or ring.
Why is PEX tubing so long?
The fact that PEX tubing comes in really long rolls makes it quicker to install because there are fewer fittings to connect. If you are thinking of installing PEX tubing, the two main challenges are getting the necessary tools and finding the right fittings needed for the job. Most local hardware and home improvement stores will carry a nice selection of PEX fittings, but double-check this before you plan any big projects.
How far away from water heater can you use PEX?
If connecting to a water heater, the PEX cannot be within 18 inches of the water heater, so an 18-inch water heater flex line can be used as the transition into the water heater. With list in hand, call or head out to get the fittings and pipe length that you need.
Can you use PEX to copper stub out?
Coming out of the wall to the fixtures, you can use a PEX to copper stub out or another type of PEX support such as drop-ear bend support. From under the sink, you can use a shut-off valve like an angle stop then a flex line to the faucet or toilet.
How deep should I drill PEX?
Do Know How Deep to Drill or Notch. With PEX tubing installation, drill to a maximum depth of 40 percent the depth of the wood on load bearing wood- and i-joists. Notches can go to a 25 percent depth. A non load bearing wood- or i-joist can be drilled to a maximum depth of 60 percent of the depth of the wood. Notches can go to 40 percent deep.
How to mark a run in a manifold?
Do mark each run at the manifold with a piece of thick paper and a plastic fastener around the pipe. Write on the paper with a black marker to identify where the water from the run goes, such as the bathroom sink, hot or cold water, or the basement toilet.
Is PEX tubing corroded?
PEX tubing is chemically treated high-density polyethylene that's flexible, heat resistant, and doesn't develop pinholes or corrode. Many do-it-yourselfers are transitioning to PEX from copper pipes since installation doesn't require welding or chemicals to join the tubing together. Also, fewer fittings or connections are required making these types of plumbing pipes much faster to install than metal or traditional rigid plastic. To make the installation process go as smoothly as possible, it's important to remember these dos and don'ts.
Can you cut PEX tubing to exact size?
Don't Cut Tubing to Exact Size. Doing this doesn't allow for mistakes and could make the PEX tubing installation take longer than it should or cost you money because you'll need to buy new tubing.
Can you install PEX tubing on outside walls?
When positioning the piping during PEX tubing installation, make sure you keep it away from areas where it could be exposed to extreme temperatures. Do not install on outside walls, crawl spaces, or attics. Only install the tubing in these areas if the pipes are insulated according to local plumbing codes.
Can you bend PEX tubing?
Don't Bend PEX Tube Too Tightly. PEX tubing can be bent slightly to accommodate curves. But do not bend the tubing tighter than a radius that's six times the size of the tube. For example, a 1/2-inch tube can have a three inch bend radius. All 90-degree turns should have bend supports.
Can you use PEX tubing instead of copper?
Using PEX tubing instead of traditional copper will save you time and headaches. Just remember these dos and don'ts!
How deep does a water pipe go in a house?
The water pipe will switch from copper to PEX inside the house, and the two pipes (electrical, water) will exit the house slightly underground, and then go deeper (probably 2-3' deep). They'll run up to where the garage footing will be, through a sleeve (4" pipe probably) that goes through the footing, and then be laid under ...
Can you run PEX through concrete?
When running any tubing (PEX, ABS, PVC) through concrete you need to de-couple it, Even 6mil plastic suffices, but sill guard is better. A tubing sleeve (e.g. 1.5in ABS) like you propose through the wall, is good too.
Can rats chew PVC?
This plumber told me that rodents will readily chew holes in PEX but will not chew into PVC. If PEX is encased in PVC conduit, it would seem to be necessary for rats and mice to be excluded from going into the conduit.
Can you put PEX under a slab?
The one possible exception for PEX is PEX A (Uppanor) splices can be buried but not I think under a slab. According to this plumber the design should have any PEX under a slab in suitable conduit that would allow replacement by pulling out failed PEX and pushing/pulling in new.
Can you run PEX under ground?
You can run PEX under ground. I have done this successfully. Hot and cold to the exterior, then cold to an out building. But a hot leak can get expensive, so I always keep it shut off except for a short period when I need it.
Does a plumber install PEX in conduit?
A different plumber from the one referenced above also told me that he has installed PEX in conduit for customers willing to pay for the extra materials and labor and he considers this to be the best installation technique.
What Type Of PEX Can You Bury?
PEX A ( Amazon Link) and PEX B boast burying suitability.But the buried PEX’s design is different from those for the exposed pipe.
Can You Expand Sharkbite PEX?
Yes. You can expand SharkBite PEX feeder tubes with a heat gun and a coupler. However, there is one catch:
Can You Bury Apollo PEX?
Yes. In good soil conditions, it’s possible to bury Apollo PEX tubing. The thickness of the wall helps protect against physical damage and corrosion from chemicals such as salts.
Do PEX Pipes Burst When Frozen?
Yes. They have been well known to explode when frozen. PEX is polyethylene plastic, and that’s a very heat-resistant material.
Can I Use PEX For The Main Water Line?
Yes. You can use PEX pipe in the main water line, providing it is correctly installed.
Is PEX Better Than PVC?
Yes. It’s a common misconception that PEX tubing is the same as PVC. They are different in many ways.
Can I Bury The PEX Pipe Underground?
PEX pipe is a plastic piping flexible and durable. One can use it for hot or cold water, gas, or airflow.
How thick should PEX tubing be?
Since in non-reinforced slabs tubing is generally positioned at the bottom (secured with foamboard staples or PEX rails), their thickness should not exceed 4-5". Otherwise, the system will not run efficiently. The only remedy for a deep slab is to install reinforcement and position PEX tubing on top, closer to the surface.
How to install a PEX coil?
1. Start installing PEX. Determine the circuit (loop) to install first and select appropriate PEX coil length from your list of materials. You may connect PEX to or near the manifold, but always leave 5-10ft spare in case manifold location will shift (and often it will).
How long can you leave a PEX slab exposed to sunlight?
Do not leave PEX exposed to sunlight for too long (5-7 days at most). While different PEX manufacturers may have 30-60 day exposure limit and in some cases even more (UV-stabilized PEX), a safer alternative is to cover PEX with poly tarp or other non-abrasive covering until the slab is poured.
What is the best way to seal a concrete slab?
A good concrete sealer protects the slab surface from absorbing water, which would otherwise freeze and thaw inside the micropores, causing small cracks and early deterioration of the top of the slab.
What is the minimum thickness of a slab?
Thin slabs are generally poured over a subfloor, which can be plywood or another slab. Adequate minimal thickness of a thin slab is considered to be 2", not including insulation.
What is the thickness of a concrete slab?
Types of concrete slabs with radiant floor heating. Thick slabs. Thick slabs are concrete slabs with an overall thickness of 4-6" or greater and can be either grade level (slab on grade) or below grade (i.e. basement foundations). All thick slabs can be categorized into:
How thick should a concrete base be?
Use a vapor barrier. 6 mil thick is an absolute minimum, with 10-15 mil recommended depending on the type and abrasiveness of material used for the base (thinner for river rock and thicker for crushed stone). Without a vapor barrier, concrete will absorb moisture like a sponge.
