Selecting the right PEX tubing size for your shower plumbing is crucial. The wrong size can lead to low water pressure and slow flow—making your morning shower a frustrating experience!
This article will walk you through everything you need to know to choose the optimal PEX size. We’ll cover:
- Benefits of using PEX for showers
- Key factors in selecting the right diameter
- Installation tips from the pros
- FAQs on PEX shower plumbing
Why Use PEX for Showers?
PEX (crosslinked polyethylene) tubing has become a top choice for shower plumbing. Here are some of its advantages:
- Flexibility – PEX is bendable and easier to install around corners than rigid pipes.
- Durability – PEX holds up well against corrosion and minerals in water. It has a lifespan of over 50 years.
- Leak resistance – The tubing is less prone to joint leaks versus metal pipes.
- Cost – PEX is an affordable option compared to materials like copper.
When it comes to shower plumbing, PEX offers an efficient and long-lasting solution. Now let’s look at how to size it correctly.
Choosing the Right PEX Diameter
PEX tubing for residential use comes in diameters from 1/4 inch to 1 inch. For showers, the typical options are 1/2 inch PEX and 3/4 inch PEX.
The factors below will determine the best size:
- Pipe length – Longer pipe runs require wider tubing to maintain pressure. Aim for 3/4 inch PEX if over 50 feet from the manifold.
- Number of fixtures – More showerheads, body sprays, etc. need greater flow capacity. Opt for 3/4 inch with multiple fixtures.
- Water pressure – Low pressure systems should use 3/4 inch to compensate.
While 1/2 inch PEX can work for basic shower setups, 3/4 inch is ideal for consistent flow and pressure. Consult the PEX sizing table below as a guideline.
PEX Sizing Table
<table> <tr><td>Application</td><td>Recommended PEX Size</td></tr> <tr><td>Basic showerhead </td><td>1/2 inch</td></tr> <tr><td>Shower + handheld</td><td>1/2 inch</td></tr> <tr><td>Shower + body sprays</td><td>3/4 inch</td></tr> <tr><td>Two showerheads</td><td>3/4 inch</td></tr> <tr><td>Distances over 50 feet</td><td>3/4 inch</td></tr> </table>
Step-by-Step Installation Tips
Follow these tips from professional plumbers when installing PEX:
- Use proper crimping technique – Invest in a PEX crimp tool. It compresses the metal rings for a tight, leak-free seal.
- Maintain curves – Keep tubing curves to a minimum 8-inch radius. Sharp bends can pinch the PEX.
- Secure pipes – Properly anchor exposed pipes with hangers every 32 inches to prevent sagging.
- Allow for expansion – Leave a slight gap at fixtures to account for thermal expansion of PEX tubing.
- Use elbows at connections – Elbow fittings reduce strain on joints versus bending the tubing.
Correct installation is just as crucial as selecting the right size! Avoid headaches down the road by following best practices.
FAQs on PEX for Showers
Here are answers to some common PEX shower plumbing questions:
Can PEX supply both hot and cold water?
Yes, PEX is safe for both hot and cold water up to 200°F. Make sure to follow color codes – blue for cold, red for hot.
What’s the max distance for 1/2″ PEX?
Limit 1/2″ PEX to 45 feet from the manifold to avoid pressure drops. Use 3/4″ PEX for any runs over 45 feet.
Is PEX code approved for showers?
PEX meets Uniform Plumbing Code (UPC) standards and can be used for shower plumbing in residential buildings up to three stories high.
How do I quiet noisy PEX pipes?
Noisy PEX usually indicates improper anchoring. Be sure to secure pipes as recommended to prevent vibration noise.
The Right Size Matters
As you can see, taking the time to select and install the optimal PEX size for your shower can make all the difference. Size 1/2 inch and 3/4 inch PEX based on the factors outlined above. Follow professional installation tips to prevent headaches.
With the right know-how, you can enjoy reliable shower pressure and flow for years to come.
