First floor bedroom floor insulation

[Hl.house]

Dear all, hope you are looking forward to the festive days.

The said bedroom is on top of kitchen with two external walls and a pitched roof. External walls are well insulated(celotex) and there is a total of 300mm(100mm + 200mm) earth wool ceiling insulation. I was told that warm air always travels up. Should I still add some wool insulation between the floor joists or just leave it.
BTW, flooring is 18mm ply screwed to joists and Vinyl on top.

 

[KenGMac]

Hl.house, Good evening.

In general terms, placing insulation between two like heated spaces is not a requirement unless you are attempting to keep one habitable space warmer or cooler than the other.

For example, in a Commercial or industrial setting the air condition ducting is generally well insulated to ensure that the treated air whether warm or cool whilst passing through a heated [or chilled] room does not degrade in its temperature, on the other hand there is no need to insulate air ducting being simply extracted.

Point being if you have two areas that are at generally the same temperature insulation between them is not really a requirement?

If you consider it, the warm air in the kitchen percolating upwards could possibly mean that the Rad in the bedroom could be turned down a bit but still retain the general temperature you need in the Bedroom?

Different thought? i can see if the kitchen is a bustling noisy place then Sound Proofing between the two rooms may be a requirement just so that a young child is not unduly disturbed by the bustle in the kitchen below?

Hope you have all the presents hidden away by now?

Ken.

 

[endecotp]

I believe that building regs do now require some level of soundproofing around bedrooms, so if I were you yes I'd put something there.

 

[Hl.house]

Hl.house, Good evening.

In general terms, placing insulation between two like heated spaces is not a requirement unless you are attempting to keep one habitable space warmer or cooler than the other.

For example, in a Commercial or industrial setting the air condition ducting is generally well insulated to ensure that the treated air whether warm or cool whilst passing through a heated [or chilled] room does not degrade in its temperature, on the other hand there is no need to insulate air ducting being simply extracted.

Point being if you have two areas that are at generally the same temperature insulation between them is not really a requirement?

If you consider it, the warm air in the kitchen percolating upwards could possibly mean that the Rad in the bedroom could be turned down a bit but still retain the general temperature you need in the Bedroom?

Different thought? i can see if the kitchen is a bustling noisy place then Sound Proofing between the two rooms may be a requirement just so that a young child is not unduly disturbed by the bustle in the kitchen below?

Hope you have all the presents hidden away by now?

Ken.

Thanks!

And yes, I am yet to buy presents !!!
Talk about procrastination.

 

[Hl.house]

I believe that building regs do now require some level of soundproofing around bedrooms, so if I were you yes I'd put something there.

Is earthwool 100mm enough?

 

[endecotp]

If this were a new building in England the requirement would be:

• floor surface of timber- or wood-based board, minimum mass per unit area 15kg/m2;
  
  
• ceiling treatment of single layer of plasterboard, minimum mass per unit area 10kg/m2, fixed using any normal fixing method;
  
  
• an absorbent layer of mineral wool (minimum thickness 100mm, minimum density 10kg/m3) laid in the cavity.
  
  See approved document E section 5.23.
  
  Earthwool Acoustic Roll says it has a minimum density of 10kg/m3. I can't immediately find density numbers for the non-acoustic earthwool,products, but presumably they are lower.

 

[Hl.house]

If this were a new building in England the requirement would be:

• floor surface of timber- or wood-based board, minimum mass per unit area 15kg/m2;
  
  
• ceiling treatment of single layer of plasterboard, minimum mass per unit area 10kg/m2, fixed using any normal fixing method;
  
  
• an absorbent layer of mineral wool (minimum thickness 100mm, minimum density 10kg/m3) laid in the cavity.
  
  See approved document E section 5.23.
  
  Earthwool Acoustic Roll says it has a minimum density of 10kg/m3. I can't immediately find density numbers for the non-acoustic earthwool,products, but presumably they are lower.

Thanks!