400 wide alternative to RWA45

Discussion in 'Tools and Materials' started by ChrisZx, 3 Dec 2019.

  1. ChrisZx

    ChrisZx

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    Our drawings spec RWA45 between 400c/c joists - great, RWA45 only comes in 600.

    Whats the best alternative? I've seen a few that would do it fine, like Rockwool flexi slab, but it's something like 60% more expensive despite looking exactly the same.
     
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  3. foxhole

    foxhole

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    Rolls usually come semi split so you get 400/200 on a 600 roll .
     
  4. ChrisZx

    ChrisZx

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    I thought the rolls were less dense? Are they a suitable alternative? I'm not sure the sound insulation would be as good
     
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