Pex through a fire wall

Aidan (UK)

> I <BR>
> know there are sleeves made for electrical that <BR>
> has a foam in it that expands when exposed to <BR>
> heat. I was thinking there might be something <BR>
> like that for pex. <BR>
<BR>

There is.

Google for "intumescent collars" or "intumescent sleeves".

Something like these;

http://www.astroflame.com/intumescent_pipe_collars.html

Paul Fredricks_3

What should be used for fire stop on Pex tubing going through a fire wall?

Weezbo

now that sir would depend upon how many hour fire wall

assembly one was threading the pex tubing through...

Paul Fredricks_3

oops

It's a 2 hour rated wall.

scrook_2

Run Pex thru iron pipe?

Run the PEX thru a short piece of larger black (or galv) iron pipe thru the firewall and firecaulk the iron at the wall on both sides and the PEX to the iron at one end only?

Paul Fredricks_3

I'll have to run that one by the inspector. Of course, I think the guys already ran the Pex. I know there are sleeves made for electrical that has a foam in it that expands when exposed to heat. I was thinking there might be something like that for pex.

GW

Best of luck

i had firewall issues at my new building; what a pain! if push comes to shove you may need to have an engineer sign off on it!

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Mike Dunn

pex and firewall

I think Uponor aquapex is plenum rated by itself. It may not need to be sleeved. Although I think there is a minimum separation distance between two pieces of pex.

Paul Fredricks_3

Thanks Everyone

I contacted the Pex manufacturer. They emailed me a cut sheet that shows the proper way to just use fire caulk and maintain the 2 hour rating. We'll present that to the inspector and go from there.

Thanks again.