Can I put a ceiling in my boiler room - AVS Forum
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post #1 of 7 Old 09-01-2013, 04:59 PM - Thread Starter
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My HT is in the basement - next to the boiler room, and next to the staircase. Sound that gets out of the HT - goes right up through the stair and boiler room ceiling to the rest of the house.
The wall adjacent to the stairs is easy - I can put a decoupled DW+GG+DW sandwich + RS-13 batts there , however my Q is regarding the boiler room:
There are pipes along the ceiling - but I was wondering if I can put a decoupled DW+GG+DW sandwich ceiling in the boiler room to stop these sounds from making their way up stairs - or is this some sort of coding or safety issue?

thx
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post #2 of 7 Old 09-01-2013, 05:32 PM
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My initial reaction is yes with reservations

1) If there is a flue pipe (exhaust) there needs to be some separation, ditto if anything else that gets hot would touch the ceiling. If you have a flue I would investigate the hardware used to stick a metal flue pipe used for a freestanding stove up through a ceiling.

2) if there are any shut off valves up there you need to provide access

3) you need to determine if the combustible fresh air supply is being met and that code mandated venting to adjacent spaces is in place and that the open ceiling is not part of that venting plan.

Lastly you would be better off containing the sound at the source by building a soundproof theater, but I assume that train has left the station.
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post #3 of 7 Old 09-01-2013, 07:53 PM - Thread Starter
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Yep, that train has left. It does a decent job, but not fully and enough sound gets out to cause problems upstairs. I have easy access to the stairs and boiler room, and can much more easily add soundproofing there and prevent it from getting upstairs. Then redoing the HT.
re: your points
(1) I can check if anything feels hot
(2) no shut off valves
(3) There's a window in the boiler room - does that suffice? Also the boiler room ceiling is about 10+ feet high -(if that matters)
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post #4 of 7 Old 09-02-2013, 10:35 AM
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3) only if it is left open when anything that burns is operating

here is my local building code on this issue.

Combustion Air

Furnace rooms with fuel-burning appliances must be provided with two permanent openings to adjacent spaces: one within 12 inches of the top and one within 12 inches from the bottom of the adjoining wall.

Each opening must have a minimum free area equal to 1 square inch per 1,000 Btu per hour input rating of all appliances in the furnace room, but not less than 100 square inches.

The openings are not required if a louvered door is provided or the furnace room area is greater than 50 cubic feet per 1,000 Btu per hour input rating of all appliances installed in the room.
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post #5 of 7 Old 09-02-2013, 11:21 AM
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This is also dependent on the furnace. I installed a very efficient oil furnace that got all of its combustion air from outside (via a tube running to the outside). I did not have to have an opening to the room, though I had a fire rated door and fire rate louvers installed (to a garage). The inspector said I didn't need the louver, which means the room would be "sealed" other than the intake air tube. Now, the old furnace I had wouldn't have been able to use conduit for its combustion air, as it required too much air.

Bob
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post #6 of 7 Old 09-02-2013, 11:31 AM
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Quote:
Originally Posted by ctviggen View Post

I did not have to have an opening to the room, though I had a fire rated door and fire rate louvers installed (to a garage).

I had to look that up because my first thought likened that to a "submarine-rated screen door"... biggrin.gif

(glad to see it's a real thing - pretty cool solution)

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post #7 of 7 Old 09-07-2013, 08:21 PM - Thread Starter
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Quote:
Originally Posted by BIGmouthinDC View Post

My initial reaction is yes with reservations

1) If there is a flue pipe (exhaust) there needs to be some separation, ditto if anything else that gets hot would touch the ceiling. If you have a flue I would investigate the hardware used to stick a metal flue pipe used for a freestanding stove up through a ceiling.

2) if there are any shut off valves up there you need to provide access

3) you need to determine if the combustible fresh air supply is being met and that code mandated venting to adjacent spaces is in place and that the open ceiling is not part of that venting plan.

Lastly you would be better off containing the sound at the source by building a soundproof theater, but I assume that train has left the station.

on second thought - I don't think the train has totally left the station.
I'm reconsidering - and think I can redo the front and front /right of the HT
see - thread
http://www.avsforum.com/t/1489003/help-me-redesign-my-ht and let me know what you think I should do
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