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Old 01-07-2009, 11:13 PM   #16
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Installing pex radiant floor heat, questions.


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Some times its just the tube expanding.
Other times its the plate.
And some, its both.

The plates will hang down.
But, the plates will still radiate more heat, then just a stapled tube system.

If you want.
You can pull the tube out, put some talc or baby powder on the tube, and put it back in teh plate.
See if it stops the noise.

I will give that a try. I'm still so upset with the company who installed it. They "sold" me the plates then blamed me for having them LOL

Thanks for your input!

Maria

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Old 01-08-2009, 08:44 AM   #17
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Installing pex radiant floor heat, questions.


What about using one drywall screw on the plate and supporting the other end of the plate with an angle bracket.
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Old 01-08-2009, 09:06 AM   #18
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Installing pex radiant floor heat, questions.


I have tried some different approaches to securing the plates to the underside of the floor, I even Ripped and installed 1/4 Luann plywood to the underside of the sub floor, using one edge of the ply to support the pan and stapling the other to the subfloor. And I'm Still getting the noise, As Beenthere suggested it appears that the noise is coming from the pex and the pan expanding.
Next time I come across this type of install what I plan on doing is rip 1/4" x 6" strips of ply and staple them to the underside of the pans and the subfloor, Sandwiching the pan between the ply and the subfloor.
My reasoning is that with the warm boards you do not get the noise being the pan is compressed to the plywood. BOB
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Old 01-08-2009, 09:50 AM   #19
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Installing pex radiant floor heat, questions.


Thanks everyone for your ideas. My warmboards too are nice and quiet. I didn't have that option for this floor though as it is the old exisiting 130 year old wood and I didn't want to cover it. I wonder if I used screws but didn't snug the plate to the floor or maybe screws with a rubber washer so there is a gap? Of course we are talking about 700 plates here......but we are also talking about a house I hope my great great grandkids will be living in someday... My kids are the 5th generation to live in it :-)

Maria
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Old 01-08-2009, 11:09 AM   #20
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Installing pex radiant floor heat, questions.


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I have tried some different approaches to securing the plates to the underside of the floor, I even Ripped and installed 1/4 Luann plywood to the underside of the sub floor, using one edge of the ply to support the pan and stapling the other to the subfloor. And I'm Still getting the noise, As Beenthere suggested it appears that the noise is coming from the pex and the pan expanding.
Next time I come across this type of install what I plan on doing is rip 1/4" x 6" strips of ply and staple them to the underside of the pans and the subfloor, Sandwiching the pan between the ply and the subfloor.
My reasoning is that with the warm boards you do not get the noise being the pan is compressed to the plywood. BOB
Then you may get a pop noise as the plates expand and push a way from the floor.
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Old 01-08-2009, 05:48 PM   #21
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Installing pex radiant floor heat, questions.


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Then you may get a pop noise as the plates expand and push a way from the floor.
That could happen, But what i am thinking is, when u install the warm boards with the alum. plates fastened to the bottom of the plywood why does that not pop???. that's sandwiched between the ply of the warm boards and the subfloor its self correct?.
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Old 01-08-2009, 05:52 PM   #22
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Installing pex radiant floor heat, questions.


Your water temp is lower.

Or it should be.
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Old 01-08-2009, 06:19 PM   #23
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understood.
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Old 01-08-2009, 11:42 PM   #24
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Installing pex radiant floor heat, questions.


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Your water temp is lower.

Or it should be.
Im gonna make my own "warm boards" (not really warm boards, but you will see from the thread there) soon, should the same apply, cooler temp water ? If so, how can one figure/calculate this out ?

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Old 01-09-2009, 06:38 PM   #25
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That could happen, But what i am thinking is, when u install the warm boards with the alum. plates fastened to the bottom of the plywood why does that not pop???. that's sandwiched between the ply of the warm boards and the subfloor its self correct?.
My warmboards do not have plates at all. They are plywood/particle board that has a trench cut into it for the tubes. The whole thing is covered in a thin metal/foil but there are not seperate plates to rattle.

Maria
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Old 01-09-2009, 06:41 PM   #26
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Installing pex radiant floor heat, questions.


Ok another question!

I have the staple up system below the floor on the middle floor of my home. I also have it in the cement for the floor below.

My question is do I NEED to insulate with special insulation? I really don't care if the heat goes up or down as they are all living space.......I want to use some R30 for noise reduction but is that OK? It is a large house so there will be substantial cost to use the foil/bubble insualtion.

So is it worth the cost? Is it a must do? Is it a should do? Is it a.....well up to you if you do or don't :-)

THANKS everyone

Maria
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Old 01-10-2009, 03:42 AM   #27
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Installing pex radiant floor heat, questions.


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My warmboards do not have plates at all. They are plywood/particle board that has a trench cut into it for the tubes. The whole thing is covered in a thin metal/foil but there are not seperate plates to rattle.

Maria
Hi Maria I'm not formilular with the type you are describing. The ones I have installed are the Wirsbo Quick track .The plates are pressed onto the back of the panel and holds two panels together to form the track. yours , (The warm boards) are 3/4" thick plywood that is secured to the tops of the floor joists acting as a sub floor and radiant panel all in one.
different, but the end result is the same. you will not get any sound from these products from expansion and contraction. just the staple up plates that are secured to the bottom of the existing sub floor, as mentioned in the above posts.
BOB
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Old 01-15-2009, 07:03 PM   #28
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Installing pex radiant floor heat, questions.


Radiantec sold me these really cheap (but not inexpensive enough) aluminum plates . . which they have since discontinued.
They're really thin.
Can these put up with only one staple?
Should they?
Thanks.

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