40db isn't loud at all 
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Soundproofing Boiler Cupboard?
- Thread starter stevec59
- Start date
Sounded a bit noisy, not terrible, I couldn't hear it the other side of door, one of those very cheap hollow doors, but I'm thinking add another 25% of noise and it might go through a wall.
I friend of mine had his boiler in a cupboard, he has a more modern bungalow with plasterboard walls, his boiler cupboard back onto the bathroom, so not much to worry about noise wise, his bedroom is across the hall and he says that he hears the boiler in the morning and I think his cupboard doors are solid. His boiler is 10 years old, wasn't particularly noisy compared with mine. So if I put a new boiler where the existing one is it would be quieter, but in 5 - 10 years time, probably not, most boilers come with 5 year or more warenty but could you get it repaired because it's noisy, or is that general wear and tear?
I friend of mine had his boiler in a cupboard, he has a more modern bungalow with plasterboard walls, his boiler cupboard back onto the bathroom, so not much to worry about noise wise, his bedroom is across the hall and he says that he hears the boiler in the morning and I think his cupboard doors are solid. His boiler is 10 years old, wasn't particularly noisy compared with mine. So if I put a new boiler where the existing one is it would be quieter, but in 5 - 10 years time, probably not, most boilers come with 5 year or more warenty but could you get it repaired because it's noisy, or is that general wear and tear?
boilers being connected to rigid pipework that extends through most properties are a slightly different thing.
check the boilers instructions, most can be screwed to timber now but maybe a layer or two of sound proof plasterboard would help the sound issue. if you can fix studs floor and ceiling then that may help.
I think I would focus on the boiler not falling off the wall, above and beyond the noise issue - you are gonna hear it because you are already priming yourself to listen out for it... Practice some distraction techniques, study some sleep guides and maybe hang a heavy textile artwork on the wall behind the cupboard in the bedroom! 
I'm going back nearly fifty years to when I was in college but if I remember right the db scale is logarithmic so 50db is twice as loud as 40db.
Incidentally I'm following this thread with interest as I'm having a boiler fitted in my bedroom in an airing cupboard as it's the only place we can realistically put it. So I'm probably going to have to do something to soundproof it.
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