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Holes in Fire Rated Door

09/12/2009 7:12 AM

I have a contractor who has delivered a fire rated door. The hole for the cylinder lock was done on site and along with the installation of ironmongery, there were unnecessary holes (4 pcs-5mm. dia.) made through the door leaf skin. Will these holes affect or void the fire rating certificate?

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#1

Re: Holes in Fire Rated Door

09/12/2009 10:35 AM

The only valid answer I can think of is for you to contact a representative of door manufacturer or your local building inspector. One of them will have your official answer. Any answer you get here will be nothing but personal speculations.

I'm certain where you are using this fire rated door will determine what level of fire rating your door must meet. These holes may just lower the fire rating of the door but to a level still acceptable.

Regardless of the fire rating though, I would wonder about the cosmetics. If I was the home owner of a garage entry door and my contractor tried to palm off on me a door with a few extra holes in it, I'd tell the contractor to expect a few extra holes in the final check.

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#3
In reply to #1

Re: Holes in Fire Rated Door

09/12/2009 11:24 PM

I agree with this answer and would add the following:

- fire doors (and their frames, joints etc) are generally tested to 1hr 2hr etc.

- the warranty will not apply to doors with additional holes unless they go and test them

- tests cost a small fortune

Therefore they should replace them at no additional cost nor delay to yourself.

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#2

Re: Holes in Fire Rated Door

09/12/2009 12:20 PM

This is totally OT, but I am repeatedly fascinated to learn new colloquialisms such as,"ironmongery (hardware), shifter (adjustable wrench)" and others that escape me at the moment that come from all over the world.

There's probably a long thread there somewhere.

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#4

Re: Holes in Fire Rated Door

09/13/2009 9:03 AM

4 extra holes at 5mm, sounds like holes for closure at top of door. If it was my door, I might make the contractor either caulk some fire block in the holes,( somewhat unattractive aesthetically ), or have the contractor install sex bolts( fasteners with one half of pair with internal threads, other half external threads), in holes, much more attractive. But, as the other previous posters have stated: the door , the door jamb, the hardware( ironmongery. love that term), any resilient smoke seals/gaskets/weather-strip,threshold, door jamb to structure fasteners,etc., are all part of a tested and certified fire-rated system. The actual performance of the door in a fire might be the same with the holes plugged, but in the event of a fire it's possible that an insurance investigator might use this as an excuse for not paying on the policy, even if the doors performance was unrelated to the fire. It's a matter of your peace of mind . Do you want to make him change the door or will you be OK with the cosmetic fix?

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#7
In reply to #4

Re: Holes in Fire Rated Door

09/13/2009 1:49 PM

Sex Bolts? yet another interesting term....=b

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#5

Re: Holes in Fire Rated Door

09/13/2009 11:45 AM

Hello reymond,

It does make the door more likely to combust, but if the holes are covered with door furniture, the metal of the furniture should stop any little 'blow-throughs' by the holes. If they are not covered by door furniture, then the door is compromised.

If the door is in a flat, as the front or back door opening onto a comunal space, it will need to be 'sound' with a sprung door closure on it.

If it in a 'house', then it may reduce the fire stop to say 30 minutes rather rthan an hour ? To be sure though, you will need the advice of a local fire station perhaps, or a local council?

Good luck and any chance of a pic?

Good luck.

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#6

Re: Holes in Fire Rated Door

09/13/2009 1:08 PM

My guess is that it will not affect the fire rating as much as you would think overall, but i only see that in pre fab doors made for closing fixtures and such. Plugging them up with metal bolts or the like seems logical but i also do not know why they are there initially unless they are intended for some type of fixture.

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#8

Re: Holes in Fire Rated Door

09/14/2009 11:23 AM

Holes in door. Any holes in a fire rated structure need to be addressed for fire and smoke. Smoke is now as important or more, than fire rating. Toxic fumes do not need much area to be fatal. Depending on the type of building(res. or comm.) they have different codes. However depending on whose materials you using (3-M etc.) your local rep can get you enj. judgement that will satisfy insurance and local code. As for method, 2 hour rated caulk and sexed bolts should work well and cheaply

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#9

Re: Holes in Fire Rated Door

09/15/2009 5:43 AM

Morning Reynond,

Answer, YES,YES,YES!

Having carried out numerous fire tests on Dampers for air movement and air conditioning systems and lots of Intumescent products, for commercial and domestic builds and the Fire and Gas Industries, Oil rigs etc.

I would say get the contractor to supply what he should have supplied in the first place. (After all he does'nt care, it's not his life!)

Remember, treat fire as you would water, If it can get into even a tiny hole it will.

It can travel faster than you can run, travel uphill, downhill, round tight corners and move at frightening speeds before you can react.

You need to treat Fire with great respect, It will catch you out every time!!

Hope this helps,

merlin-100

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#10

Re: Holes in Fire Rated Door

09/29/2009 4:36 PM

OOPS. This one sort of slipped past me. I usually watch for for door stuff.

Most (but not all) ANSI type 161 cylindrical leversets use thru-bolts, integral with the chassis, to reduce the effect of torque applied by the lever. These holes are located radially around the 2-1/8" lock hole, some manufacturers at 12 and 6 o'clock, some at 1 and 7. This hardware preparation is allowed under all second location manufacturers guilelines and procedure manuals. This includes ITS, U.L. and ICBO.

If the leverset installed has an escutcheon that is too small to cover these holes, then an ANSI grade One or Two leverset was (probably) not used, and the lever is (probably) not U.L. listed for use of a fire rated door.

Several door manufacturers prepare a door for all manufacturers locks. These extraneous holes will not affect the fire label of the assembly.

Now, these rules apply to Unisted States and Canada. If these rules apply where you are I have no idea. If the model codes cited here are applicable and recognized, these are the rules.

Hope this is useful. Your Humble Servant, Doorman

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