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Cling Film or Shrink Wrap for Bass Traps
Old 13th October 2013
  #1
Gear Nut
 

Cling Film or Shrink Wrap for Bass Traps

Hi all,

I'm after some advice.

I'm in the process of building 8 x general purpose bass traps. Approx. 1200 x 600mm in size.

I've purchased everything I need andhave already made four. It seems to work well.

My question is about overing the wool in cling film/shrink wrap. Not to reflect frequencies but to keep the fibres in.

I've used Earth Wool by Knauf which (I think) is safer. The reason for the caution is that the room I'll be recording drums in is tiny with very little ventilation.

My questions are -

1) Is shrink wrap or cling film acoustically transparent?

2) Should I use this to stop fibres from leaving the traps (currently covered in Cara fabric)? I thought I would cover the Wool in wrap before building the traps.

Thanks in advance.

This site is truely helpful.
UKG
Old 13th October 2013
  #2
Old 14th October 2013
  #3
Gear Addict
 
Screwdio's Avatar
 

Quote:
Originally Posted by UKG View Post
Hi all,

I'm after some advice.

I'm in the process of building 8 x general purpose bass traps. Approx. 1200 x 600mm in size.

I've purchased everything I need andhave already made four. It seems to work well.

My question is about overing the wool in cling film/shrink wrap. Not to reflect frequencies but to keep the fibres in.

I've used Earth Wool by Knauf which (I think) is safer. The reason for the caution is that the room I'll be recording drums in is tiny with very little ventilation.

My questions are -

1) Is shrink wrap or cling film acoustically transparent?

2) Should I use this to stop fibres from leaving the traps (currently covered in Cara fabric)? I thought I would cover the Wool in wrap before building the traps.

Thanks in advance.

This site is truely helpful.
UKG
Cling and shrink wrap are not transparent at all. I and most others will recommend using a fabric/textile covering. Felt and muslin are the cheapest usual suspects.
Old 14th October 2013
  #4
Lives for gear
 
DCtoDaylight's Avatar
 

Keep fire safety in mind, too, for anything you put on your walls - a lot of plastics are very ignition-prone.
Old 14th October 2013
  #5
Gear Nut
 

Good points! Thank you.

The traps will be covered in a cara fabric. As standard.

I'm considering puting the wrap/film under the fabric. Just for the purpose of keeping the fibres in.

I've read a couple of post on here.. some saying that the traps are safe others saying 'maybe not'.

In a standard size room I wouldnt be concerned. The room is extremely small with little ventilation. Hence, why I'm being extra cautious.

Any other opinions on using wrap / film to keep fibres in?

Thanks again!
Old 14th October 2013
  #6
Gear Nut
 

Get some sheet cotton from the fabric store. See if you can breathe through it but still gives significant resistance. Pick a color you like. You can even choose a funky pattern. That should work just fine.
It'll keep the fibers in and won't reflect frequencies back.

Sent from my i-mobile IQ1-1
Old 23rd December 2013
  #7
Lives for gear
 
pointsource's Avatar
 

You can make a 10:1 solution (PVA - wood glue - and water), put inside a sprayer and apply on all sides of rockwool. Add 2 drops of washing liquid to the mixture
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