Pex Noise

John Felciano

I agree with HR, use pex-al-pex if you can.If you do use the regular Hepex I would drill holes and pull the pex through the joists.Heatloops done with pex will droop and look really sloppy.If you drill them up the droop will not be as noticable.

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AL K.

Pex Noise

I'm going to be using some Wirsbo HePex to feed an addition baseboard zone. The pex will be strung across the bottom of the floor joists about forty feet.

The talons I was originally going to use seem like the tube will be in contact with the wooden joists, and I'm concerned about expansion and contraction noises turning the customer's house into a really big violin.

If a little slack is left between the joists and the talons are nailed down tight, will the talons act as anchor points, with no tubing rubbing against the joists?

My other choice of hanger is about 9X the cost of the talons, and is more labor-intensive, but doesn't allow the pex to contact the wood; similar style to a pex clip, but larger sized.

The customer is going to be "helping" with the tubing installation(ie: removal and installation of the basement drop ceiling tile, running out the tubing from the mechanical area, and securing to the floor above) so a not-to-challenging option would be prefered.

Thanks,
Al K.

hot_rod

Is it too late

to consider Wirsbo MultiCor tube instead? Lot less movement than the regular pex. Easier to work in large diameters, also.

Leave some expansion room for the tube to move. I use a Tube Talon one size larger than the tube to allow it to slide easily.

Check to assure the hangers are rated for the temperature of the tube when running.

hot rod


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AL K.

Yes...

The tubing has already been bought. My talons are already maxed-out(3/4" pex). I guess I could look at the 1" talons.
Water temps 180°+/-.
Any type of membrane or building paper that could be sandwiched between the pex and the structure to dampen the squeaking? Teflon gasket material(XX$!)?
Thanks,
Al K.

Jed_2

Take it back for return

Return the 3/4" pex, and use 5/8". It will be easier to work with, will carry the BTU's for a properly sized zone, use 3/4" suspention clamps or tube talons(they provide the necessary gap); use P-A-P, or not. There are adapters available for 5/8-3/4. We do it all the time. If using 5/8 PEX, allow for expansion. If P-A-P, not necessary. Someone sold you a bill of no goods.

Jed

AL K.

Hotrod...

Is that just one talon in the picture? It looks like two of mine, set face to face to provide the stand-off I was looking for. Hmm...
Thanks,
Al K.