easy ceiling sound insulation design

[svouts]

I am planning to sound insulate my low ceiling 11 m2 room, from the noisy neighbours upstairs, without removing the old ceiling in a relatively clean and easy way. My design and materials are the following:

1. I drill will small holes on the ceiling and inject expanding foam, to reduce echo withing the joists:
http://www.toolstation.com/shop/p57280
2. Apply a layer of self adhesive Tecsound 50, sound membrane to stick under the ceiling, for airborne noise insulation (2.6 mm thick) :
http://www.soundstop.co.uk/ZTECSO50S.php
3. A layer of rubber carpet underlay stapled on the ceiling under the sound membrane, for impact noise insulation (5mm thick):
http://www.allaboutunderlay.co.uk/C...+500+Contract+Carpet+Underlay+15m2_UL0049.htm
4. Install acoustic plasterboard under the other two layers (12.5mm thick):
http://www.building-supplies-online...rd-soundbloc-acoustic-various-sizes-698-p.asp
5. Use plastic plugs for the screws to attach the plasterboard to the ceiling, to further insulate the plasterboard from joists vibration:
http://www.trssupplies.co.uk/fixing...ard-fixing-pack-of-100-raw07025/prod_865.html

Overall, will reduce the ceiling height only 20mm and will add around 185 k of weight.

What do you think?

 

[freddiemercurystwin]

I think its daft and you're deluding yourself.

 

[Deluks]

What he said!

 

[big-all]

builders foam reacts with some plastics and will prevent electrical wiring cooling down effecting its current carrying capacity

expanding foam can easily blow off the ceiling as it expands about 1000 times volume

have you been up stairs and talked to them and discussed the situation

 

[paul_v]

lol at the expanding foam your going to need gallons of the stuff!!

My thoughts were exactly the safe as big-all's you could easily bring the ceiling down plus make it impossible to access any wiring or plumbing should there be a problem, i agree with the above to be honest its not a good way to go about sound proofing and its quite dangerous as well.

Its surely much easier just to ask them to keep the noise down, then if there's still a problem consider recognized sound proofing methods ie insulation etc

expanding foam is a useful tool when used properly when used incorrectly it causes more problems than its worth

 

[svouts]

I was also concerned about the foam so I think I will abandon this part of the insulation. I can leave the ceiling intact and add the rest of the insulation under the existing ceiling. What if I install the rest of the staff?

1. Tecsound 50, airborne noise insulation sheet.
2. Heavy duty rubber carpet underlay.
3. Acoustic plasterboard
4. Use of nylon rawlplug to attach the plasterboard on the ceiling (I will cut them to 12.5mm, the depth of the acoustic plasterboard. It will work as a washer with a tube body that extent to the depth of the plasterboard so the metal screws transfer less vibration to the plasterboard).

- Airborne sound: the Tecsound 50 gives 24 db airborne noise reduction, and the acoustic plasterboard will further increase it.

-Impact sound: the layer of 5mm rubber curpet underlay (between the Tecsound 50 and the plasterboard) and the nylon rawlplugs in combination to the special quality acoustic plasterboard will provide some isolation/insulation to vibrations transfer so impact noise will be reduced.

What do you think of the above plan?