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PostPosted: Thu Dec 27, 2018 1:43 pm 
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Morning all, hope everyone's had a good Christmas. After having new joists and floor laid in the loft, i'm left with a patchy gable wall which has at least two different plasterboard's used attic conversion done about twenty years ago. I'm looking to add some insulation at the same time but I'm getting a bit confused as there seems to be many opinions and options on how to do it. Brickwork isnt suitable for dot and dab so was thinking of adding battens and i am looking for help with the spec. Do i leave a void on cold side/ size of batten/ depth of insulation etc . Any help or advice gratefully received and thanks Dave


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PostPosted: Mon Jan 07, 2019 12:39 pm 
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Hi

Do you have any pics?

You can install battens and then infill with insulation, you would need a vapor barrier on the warm side under the plasterboard.

Is the room heated and used as a living space?

ah


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PostPosted: Mon Jan 07, 2019 2:37 pm 
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Cheers appreciate the reply, but sorry not savvy enough to do pics. yep its heated and currently used as a listening room. Once i'd stripped the wall I was thinking of 25mmx50mm treated battens with a dpc backing.Then i wasn't sure weather to infill between battens with phenolic insulation or just to board out with PIR 63mm on top of battens which will get me my u value for the room, the board having a vapor barrier contained or both? with a reduced insulated plasteboard thickness. Again really appreciate any help. Dave


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