My ceiling spec includes 25mm celotex under the ceiling joists to minimize cold bridging, and then plasterboard. I can't to a warm roof for various reasons. Is it cheaper to get the celotex (secondsandco etc) and PB, or get insulated PB ? I've never used celotex / PB sandwich onto joists before - seems to me the celotex would squish slightly and fail to give the PB and solid enough fixing to avoid the skim cracking in the future. Is this something I should consider ? Thanks, Simon.
celotex + PB or insulated PB ?
May 28, 2009
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In article , That's what I have here and it seems to be fine. There are some cracks between plasterboard sheets - but no different from anywhere else here. Flexible caulk fills them ok.
Read the full replyInformation here may be outdated?
That's what I have here and it seems to be fine. There are some cracks between plasterboard sheets - but no different from anywhere else here. Flexible caulk fills them ok.
No it won't squish.
Probably cheaper separately...
No, its quite tough in fact - it may compress very slightly under the tension of the screws - but it won't move any further afterwards.
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