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Old 06-25-2007, 10:48 AM   #1
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Fire Blocking?


My town requires a fire blocking inspection for my new addition.

What does this entail?

Thanks

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Old 06-25-2007, 11:25 AM   #2
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Fire Blocking?


Quote:
Originally Posted by sandyman720 View Post
My town requires a fire blocking inspection for my new addition.

What does this entail?

Thanks
This might help you to understand ''fireblocking, fire stopping, & draft-stopping'':

http://www.richmond.ky.us/Department...e-blocking.pdf

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Old 06-27-2007, 01:37 PM   #3
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Fire Blocking?


I asked the inspector what the fire blocking inspection consists of and he said:

"All vertical penetrations must be sealed with firecaulk, Approved foam or Mineral Wool. Floor to walls must be sealed. walls to ceiling must be sealed"

Does anyone know what this means?
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Old 06-27-2007, 02:07 PM   #4
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Fire Blocking?


Quote:
Originally Posted by sandyman720 View Post
I asked the inspector what the fire blocking inspection consists of and he said:

"All vertical penetrations must be sealed with firecaulk, Approved foam or Mineral Wool. Floor to walls must be sealed. walls to ceiling must be sealed"

Does anyone know what this means?
Yes,

But I'll have to get back to you about each aspect you listed (have to run out)....unless someone else beats me to the answers... (sorry)
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Old 06-27-2007, 02:10 PM   #5
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Fire Blocking?


Thanks Atlantic. I think I can use Great Stuff for this correct? I know I have to foam around vertical penetrations like vents, but I am not sure what he means by sealing where the floor meets a wall etc.
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Old 06-27-2007, 08:47 PM   #6
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Fire Blocking?


Quote:
Originally Posted by sandyman720 View Post
I asked the inspector what the fire blocking inspection consists of and he said:

"All vertical penetrations must be sealed with firecaulk, Approved foam or Mineral Wool. Floor to walls must be sealed. walls to ceiling must be sealed"

Does anyone know what this means?

All vertical penetrations must be sealed with firecaulk,-Electrical wiring, plumbing pipes, cables, etc. can run through holes that have been bored out in the rough framing. The main issue with "holes" or "gaps" that exist between floor levels and vertical spaces is that, in the event of a fire, the flames will spread more quickly and be fed through the openings by O2. Thus, the reason for sealing all vertical gaps with a fire rated caulking.

Examples:

http://www.mpsupplies.com/3mfirebarriercaulk.html

http://products3.3m.com/catalog/us/e...er/output_html

Dinner time, I'll have to get to these issues for you later:

Approved foam or Mineral Wool.
Floor to walls must be sealed. walls to ceiling must be sealed"
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Old 06-27-2007, 09:26 PM   #7
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Fire Blocking?


Ok, I'm back....

Approved foam: I do not believe that "Great Stuff" has any approved fire rated expandable foam. even their website has nothing claiming their products are fire-rated.
Here are some that are fire rated and approved:

http://cableorganizer.com/abesco-fire-rated-foam/

http://www.ifpsl.com/fpfoam.htm


Mineral Wool: Fire-rated insulation - used in areas in direct connection to chimney, smoke stacks, etc. Qualifies and approved for use as "Fire Blocking".

http://www.fireretardantsinc.com/mineral_wool.html

http://www.specjm.com/mineral-wool.php


Floor to walls must be sealed. walls to ceiling must be sealed:
No gaps, no openings. To help you understand this point, review these links.
The concept is the same in terms of air flow/ air movement. The difference is sealing the gaps and areas with FIRE RETARDANT or FIRE RATED products as listed above.

http://www.jacksonemc.com/rightchoice/standards.html

http://www.oregon.gov/ENERGY/CONS/Codes/docs/res14.pdf
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Old 06-29-2007, 11:59 AM   #8
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Fire Blocking?


To add to what Atlantic is saying...

On all exterior walls, snap a horizontal line 1/2 way between the floor and ceiling. Using your nail gun, shoot in blocks (cats) in between the studs, if the studs are framed 16 o/c then the width of your block will be between 14 1/2 inches and 14 3/4 inches. Stagger the blocks, one above the line, one below. This will allow you to use the nail gun on both sides of the block.

This should be done on both first and second floors!

Side note on the fire caulking ...

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