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Exposed PEX

Posted by GreenDog194 (My Page) on
Thu, Feb 14, 13 at 10:52

Our heating contractor installed Runtal wall hung radiators. There is a silver pipe that is threaded to the Runtal radiator. Attached to that, and exposed to light, is the PEX tubing, which then travels through the floor and into the walls and system. I'm worried that the exposed PEX is a problem. It is not covered with anything. I see that UV light degrades the tubing. It is also exposed at carpet level, and I do vacuum.

I want to insist it is fixed before we move back in. I need authoritative support for why this is a problem.

Thanks for your help!


Follow-Up Postings:

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RE: Exposed PEX

If the plumber has applied for a permit for this installation then ask the building code official if the code allows exposed PEX tubing. Even if there is no permit, then you will know if the installation is compliant to the current plumbing code. You can insist the plumbing be done to code.

The UV levels inside the house are low, but no one knows how it will affect your installation. I would argue the exposed PEX may fail in the future due to UV exposure, it could be damaged by your vacuum cleaner, and it is does not look good.


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RE: Exposed PEX

Good common sense catch......

Use this link for usage and codes. Your local regulations may vary.

http://huduser.org/portal/publications/pex_design_guide.pdf

Note pages 20 and installation on page 77. Generally, pex must have a special black uv protective sleeves when exposed to direct or indirect sunlight. Also, pex can't be used within so many inches of a heating device. Have fun reading.

This post was edited by audiomixer on Fri, Feb 15, 13 at 14:36


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RE: Exposed PEX

Cover all exposed pex with 'Armaflex', space permitting. This way you insulate the pex and isolate it from UV.

SR


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