Sound insulation between floors - suspended floor

Nick1881

Nick1881

Nick1881

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Joined
4 Feb 2007
Posts
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Location
Nuneaton, UK
My partners sons bedroom is right above ours, he currently has LVT flooring which isn't helping and we are going to get carpet with good underlay, but I worry it won't be enough.

The house is 2006 build so doesn't have small floor boards, but the large chipboard sheets. I heard this is a pain to get up and breaks up. If it was small boards I'd pull the floor up and lay some insulation under.

The joists are 400 mm, it doesn't have full thickness joists either, rather thinner wood with something like plywood between.

Is some kind of spray insulation a good idea? I found this place and will contact them for a quote. https://www.redplug.co.uk/blown-floor-insulation/

Any other ideas? He has a gaming PC with a tactile keyboard and the noise seems to travel right through the hollow floor and sounds like a bumping noise in our bedroom. He has a desk mat and I put those carpet type things uner the desk legs already.
 
The joints you have are called I-beams, pretty standard construction methods these days.

As for the insulation, it may work, it may not. The noise will be being transmitted into the joists and down into the lower rooms.

Does the LVT have underlay? That normally decouples it from the floor below.
 
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b0rn2sk8 said:
The joints you have are called I-beams, pretty standard construction methods these days.

As for the insulation, it may work, it may not. The noise will be being transmitted into the joists and down into the lower rooms.

Does the LVT have underlay? That normally decouples it from the floor below.
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Ah, I beams makes sense as that's what they look like from the side.

I'm hoping the underlay will take care of some of the noise, then insulation filling the hollow gaps so it's not like a drum.

Not sure if the LVT has insulation as it was installed by the previous owners.
 
If they just paid it directly into the chipboard floor with no underlay, it will transmit every, single, noise, to the room below.

If you do go the carpet route, get a carpet protector for the chair, PC chairs will trash it in weeks.

You could also mandate they get a quiet mechanical keyboard. Same feel, none of the (anti-social) noise.

The clicky keyboards are a bit of a fad and more about ‘fashion’ than anything else.
 
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b0rn2sk8 said:
If they just paid it directly into the chipboard floor with no underlay, it will transmit every, single, noise, to the room below.

If you do go the carpet route, get a carpet protector for the chair, PC chairs will trash it in weeks.

You could also mandate they get a quiet mechanical keyboard. Same feel, none of the (anti-social) noise.

The clicky keyboards are a bit of a fad and more about ‘fashion’ than anything else.
Click to expand...

Could be the case as we do indeed hear everthing. We will find out when we get carpet, though I'm not looking forward to removing the LVT.
 
I got a quote for blown insulation into the ceiling of our bedroom.

"The price for the full 28.35m2 would be £1,707.00." Bit more than I was hoping, need to find a cheaper solution.
 
SoliD said:
Sound insulation is heavy and dense. Heat insulation is light and airy. You want the former something like this. https://www.insulationhub.co.uk/product/100mm-rwa45-rockwool-insulation-acoustic-insulation/ should. Be able to get from b&q of wickes. Need to Lift up the floorboards and fill in between all the joists.
Click to expand...
This would be my preferred method, sadly it means lifting the LVT and possible ply underneath, then all the chipboard boards, which I heard are a pain and will likely need to be replaced.
 
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