Fire stopping around pex - Plumbing Zone

express · 05-01-2011, 07:22 PM

Starting a 6 unit apartment building and the building inspector wants fire stopping around my penetrations between floors. I never had to do this before, insulation company's used to do this for insulation reasons but they have stopped. Im wondering what to use, would like some advice. Thanks

user4 · 05-01-2011, 07:32 PM

Quote:

Originally Posted by express

Starting a 6 unit apartment building and the building inspector wants fire stopping around my penetrations between floors. I never had to do this before, insulation company's used to do this for insulation reasons but they have stopped. Im wondering what to use, would like some advice. Thanks

Did you ask the building inspector why he wants you to firestop around a flammable material?

mialle30 · 05-01-2011, 08:02 PM

I think he is referring to the use of fire caulk (intumescent caulk). Basically once the pex melts or burns the caulk will swell up and close off the hole preventing toxic fumes and fire to spread.

express · 05-01-2011, 08:50 PM

Quote:

Originally Posted by mialle30

I think he is referring to the use of fire caulk (intumescent caulk). Basically once the pex melts or burns the caulk will swell up and close off the hole preventing toxic fumes and fire to spread.

This is what was mentioned by the GC, he thinks it comes in a tube and is red in color. Where would I buy this and will it affect the pex?

user4 · 05-01-2011, 08:57 PM

Quote:

Originally Posted by express

This is what was mentioned by the GC, he thinks it comes in a tube and is red in color. Where would I buy this and will it affect the pex?

Hilti has a full line of firestopping caulk and accessories, but I have never seen this product expand enough to fill a void left if the piping itself is gone, nor do I see the point, if the material burns the fire will be carried to the next floor despite the firestopping effort.

U666A · 05-02-2011, 10:43 AM

http://selfsealfirestops.com/product/Type-SSR

Google Type Ssr firestop rings. This product states it is approved for pex. It will expand and crush the pipe, sealing the penetration.

I believe this is exactly the type of thing you are looking for.

DUNBAR PLUMBING · 05-02-2011, 11:52 AM

I posted the news of Osama Bin Laden dying, thanking the troops for their service,

I instantly lose 3 subscribers off my youtube channel.

I see this as a good thing because it shows I had some not so good people in my network. I remember a couple 'questionable' people joining a long time ago.

Glad to see it happen.

PlumberShep · 05-02-2011, 11:50 PM

Quote:

Originally Posted by express

This is what was mentioned by the GC, he thinks it comes in a tube and is red in color. Where would I buy this and will it affect the pex?

There is a lot more to it than just throwing a tube in a caulk gun and filling in voids.Did the G.C. provide you with firestop submittals when you bid this job?Is it in your contract?If not then you need to put it back in the G.C.'s lap.Ultimately the responsibility lies with the architect.Firestop methods have to have an engineers stamp or they are worthless.You also have to be certified by the firestop manufacturer to install thier system.

timplmbr · 05-03-2011, 12:25 AM

first--- i would contact the manufacturer to see what the reccomend, simply due to the warranty of the product
second--- i would simply ask the inspector what he requires, some are cool enough to explain in detail,

easttexasplumb · 05-03-2011, 09:54 AM

I would think once the pex melts it will help stop the fire.

05-01-2011, 07:22 PM	#1
express Senior Member Join Date: Nov 2008 Posts: 343 My Photos	Fire stopping around pex Starting a 6 unit apartment building and the building inspector wants fire stopping around my penetrations between floors. I never had to do this before, insulation company's used to do this for insulation reasons but they have stopped. Im wondering what to use, would like some advice. Thanks

05-02-2011, 11:52 AM	#7
DUNBAR PLUMBING www.DunbarPlumbing.com Join Date: Sep 2008 Location: NORTHERN KENTUCKY - GREATER CINCINNATI AREA Posts: 5,401 My Photos	Thing of beauty I posted the news of Osama Bin Laden dying, thanking the troops for their service, I instantly lose 3 subscribers off my youtube channel. I see this as a good thing because it shows I had some not so good people in my network. I remember a couple 'questionable' people joining a long time ago. Glad to see it happen. __________________ Northern Kentucky Plumbers *\|YOUTUBE VIDEOS\| Twitter Feed \| DUNBAR PLUMBING FAN PAGE*

05-03-2011, 12:25 AM	#9
timplmbr Member Join Date: Mar 2011 Location: Morristown , TN Posts: 65 My Photos	first--- i would contact the manufacturer to see what the reccomend, simply due to the warranty of the product second--- i would simply ask the inspector what he requires, some are cool enough to explain in detail, __________________ master plumbers know how to lay there pipe

05-03-2011, 09:54 AM	#10
easttexasplumb I'm right your wrong Join Date: Oct 2010 Location: TX Posts: 3,797 My Photos	I would think once the pex melts it will help stop the fire. __________________ This is not my signature

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05-01-2011, 08:02 PM	#3
mialle30 Member Join Date: May 2010 Location: southern california Posts: 78 My Photos	I think he is referring to the use of fire caulk (intumescent caulk). Basically once the pex melts or burns the caulk will swell up and close off the hole preventing toxic fumes and fire to spread.

05-02-2011, 10:43 AM	#6
U666A Registered Member Join Date: Dec 2010 Posts: 6,039 My Photos	http://selfsealfirestops.com/product/Type-SSR Google Type Ssr firestop rings. This product states it is approved for pex. It will expand and crush the pipe, sealing the penetration. I believe this is exactly the type of thing you are looking for.

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