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23rd July 2022, 09:16 PM #1GOLD MEMBER
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small amount of noise reduction around DC
Hi everyone,
I've moved into a new place and practically I can only have the DC in the double garage with me. So i'm trying to help out the rest of the house with a bit of noise reduction through the house.
the DC is located here in green:
layout.jpg
20220722_195626.jpg
so the DC backs onto the laundry and kitchen and a bed room. Currently the bed room is the least of a concern as its soon to become my office/study. I'm trying to stop a bit of the DC noise going through the house and wasn't sure if lining the current walls with either mass loaded vinyl or 18mm MDF would be much of a help.
I'd also put a half roof over it as well.
but basically the area I was looking to cover would be the bits in blue but unsure if I should just go past the DC slightly or try and do the WHOLE wall (4m x 2.8m). There is obvisouly a decent price difference between MLV and MDF
the two doors highlighted in red are also hollow core cheapy's and not sure if a better "solid" core door might also help with a bit of noise reduction.
I'm also aware it's never going to be whisper quite but just trying to limit it as much as I can. the only 3rd option would be to glue and screw another layer of plasterboard against the wall as well.
my over all plan is to run the 6" ducting up into the roof and bring droppers down through the roof sheet where required. garage part of the roof has no insulation it either which is something I intend to do as well.
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23rd July 2022, 09:45 PM #2SENIOR MEMBER
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Are you going to vent it outside? (You really should).
I built a cabinet/room within the back of my garage / shed.
75mm wide studs from memory. Earthwool insulation.
1 layer of gyprock on the inside
1 layer of 12mm plywood (I think, could have been 15mm) on the outside.
Sealed gaps pretty extensively.
The air going into the dust pipes is louder than the DC itself.
I don't have to worry about any shared walls etc, just fussy neighbours.
You are welcome to come have a look and listen at some point if you want.
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23rd July 2022, 10:55 PM #3.
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- Feb 2006
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Putting trunk line ducting in a roof cavity and hoping for an easy install of an efficient system is a pipe dream.
Dropping down from a trunk line should not be simple T's but need to be done as Y branches and these take up considerable space. Inside a roof this then usually means Y'S laying down and then using 90º bends, Again these bends cannot be short radius so need to be long radius bends which take up space, or cutting ovals in the roof sheet ie triple time awkward
The rafters will continually be in the wrong spot resulting in kludge ducting or machine positioning compromises,
The blast gates should also to as close to the trunk line as possible so unless you get auto gates (ie $$) you'll need to come up with a remote activation method.
The best OH gates are rocker gates but they also consume vertical space whether they are auto or not.
If you decide to go with the "up in the roof" I would think and overplan everything very carefully and don't buy anything until your layout of fully sorted.
RE: Enclosure
12 / 15mm sheet is not heavy enough
You need something really thick and dense in there somewhere. Two layers of plaster board would be a cheap option.
I used 38mm melamine, 50 mm Rockwool and then 15mm chipboard on my enclosure.
My recommendation would be to NOT connect the DC enclosure to any of the house walls. Build a separate standard alone box with a 50 mm gap between the enclosure and the any house wall - stuff some Rockwool in there if you like to reduce dust collection and creepy crawly inhabitation.
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