Wed, 26 Aug 2026 10:02:08 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306397#Comment_306397 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306397#Comment_306397 Sun, 04 Aug 2024 21:39:55 +0100 Victorianeco
Would you insulate between joists also while the boards are up or not bother as the whole house will work as one anyway?

We have decided against underfloor heating and will opt for a radiator instead]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306398#Comment_306398 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306398#Comment_306398 Sun, 04 Aug 2024 22:17:53 +0100 Victorianeco https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306399#Comment_306399 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306399#Comment_306399 Sun, 04 Aug 2024 22:18:34 +0100 Dominic Cooney https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306400#Comment_306400 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306400#Comment_306400 Sun, 04 Aug 2024 22:29:29 +0100 Victorianeco https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306401#Comment_306401 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306401#Comment_306401 Sun, 04 Aug 2024 22:33:17 +0100 Dominic Cooney
Floor in the new upstairs bathroom in the farmhouse
Part of the upstairs hallway (bought enough to do it all)
The whole of the upstairs in the barn conversion
The upstairs in the last place that we did (stone cottage)]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306402#Comment_306402 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306402#Comment_306402 Sun, 04 Aug 2024 22:35:56 +0100 Dominic Cooney https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306403#Comment_306403 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306403#Comment_306403 Sun, 04 Aug 2024 22:37:10 +0100 Dominic Cooney https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306404#Comment_306404 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306404#Comment_306404 Sun, 04 Aug 2024 22:45:30 +0100 Dominic Cooney Because the GSHP is in there and the MVHR]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306405#Comment_306405 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306405#Comment_306405 Sun, 04 Aug 2024 22:52:24 +0100 Dominic Cooney https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306407#Comment_306407 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306407#Comment_306407 Mon, 05 Aug 2024 12:26:59 +0100 djh https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306410#Comment_306410 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306410#Comment_306410 Tue, 06 Aug 2024 10:54:52 +0100 Artiglio https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306416#Comment_306416 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306416#Comment_306416 Wed, 07 Aug 2024 10:12:44 +0100 Victorianeco
So you suggest going for acoustic insulation? Full thickness of the joist (8") or overkill?

Thanks]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306417#Comment_306417 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306417#Comment_306417 Wed, 07 Aug 2024 11:02:47 +0100 Artiglio ( rockwool acoustic 45 ( the 45 iirc is the weight per m3)) or similar. If you wanted further improvements then as mentioned above resilient bars and heavier plasterboard/double boarding. But you’re dealing with impact and airborne sound transmission, so need to take into account floor finishes etc and how the effects of flanking transmission kick in.
I’ve flats, one block 1870 conversion other a 2000’s new build. Sound is an ever recurring issue with tenants, more so as time passes and expectations rise both in terms of what tenants feel they can do in their flats and the quiet they expect when it suits them.
They’ll never be quiet to the extent many want these days. To do so i’d guess you’ll need solid floors, suspended ceilings and acoustic floor coverings and wet plastered walls.
Obviously in your own home behaviours are very different and you can ensure the kids wear headphones when gaming ( the bane of my life at one time was a family whose teenage boy insisted on playing the latest “murder death kill shoot em up” at full volume in the early hours.)]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306418#Comment_306418 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306418#Comment_306418 Wed, 07 Aug 2024 11:15:19 +0100 Dominic Cooney https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306422#Comment_306422 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306422#Comment_306422 Wed, 07 Aug 2024 16:35:21 +0100 djh https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306424#Comment_306424 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306424#Comment_306424 Wed, 07 Aug 2024 18:27:45 +0100 Peter_in_Hungary Posted By: Artiglio( the bane of my life at one time was a family whose teenage boy insisted on playing the latest “murder death kill shoot em up” at full volume in the early hours.)
My rental contracts have an 'anti social behaviour' clause which essentially says they can't do anything that annoys the neighbours and another clause that says breach of contract is grounds for terminating the contract and eviction. Over here you are not allowed to evict tenants during the heating season (October to March) unless it is for breach of contract.

Re noise - I had a brick wall between 2 flats that was allowing too much noise through, the fix was 5 cm high density rockwool then 5 cm normal rockwool then a single layer of fire resistant plaster board (for the weight and density rather than the fire resistance). Problem fixed. Apparently the varying densities through the layers give better results than a single density sound proofing.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306425#Comment_306425 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306425#Comment_306425 Wed, 07 Aug 2024 20:28:42 +0100 djh Posted By: Peter_in_HungaryApparently the varying densities through the layers give better results than a single density sound proofing.I was going to say much the same thing.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306428#Comment_306428 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306428#Comment_306428 Wed, 07 Aug 2024 21:51:35 +0100 Dominic Cooney https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306429#Comment_306429 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306429#Comment_306429 Thu, 08 Aug 2024 08:27:19 +0100 Victorianeco https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306430#Comment_306430 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306430#Comment_306430 Thu, 08 Aug 2024 08:57:24 +0100 Artiglio The floor construction in thos building

22mm chipboard, 15mm plasterboard, 20mm high density rockwool, 18mm sterling board, 9” joist (150mm lightweight rockwool between), resilient bars, 2x 15mm plasterboard.

So long as the floors are carpeted and not laminate flooring , transmission through the floor is negligible in day to day living.
The problem in that building is that the external walls are 7 newton concrete blocks that were dot and dabbed for plasterboard, they should have had a continuous ribbon of adhesive top and bottom of the sheets, ( i’m pretty sure they don’t. But wasn’t there to check at the time) if i were to do it again i’d go for a parge coat or just wet plaster the walls.

Victorianeco - Lafarge used to have documents for tested and approved systems ( it was one of theirs i used) , i seem to recall it being called the “white book” , but i may well be mixing things up.Sorry it was British Gypsum

https://www.british-gypsum.com/specification/white-book-specification-selector/white-book-overview

20m years since i looked at it so much will likely have changed]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306453#Comment_306453 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306453#Comment_306453 Tue, 13 Aug 2024 20:53:23 +0100 Victorianeco https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306577#Comment_306577 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306577#Comment_306577 Sat, 24 Aug 2024 11:22:31 +0100 Victorianeco
100mm standard rockwool insulation
50mm sound insulation
50mm gap

I have no particular reasoning for this buildup but it accommodates standard size material?

Anyone have a better preference?]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306579#Comment_306579 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306579#Comment_306579 Sat, 24 Aug 2024 11:29:16 +0100 Victorianeco
I'm thinking just 100mm sound insulation and a 100mm gap? Coupled with new osb boards I think it's going to be more than sufficient for my own home without overthinking...]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306583#Comment_306583 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18169&Focus=306583#Comment_306583 Sat, 24 Aug 2024 20:18:52 +0100 djh Posted By: VictorianecoI'm thinking just 100mm sound insulation and a 100mm gap? Coupled with new osb boards I think it's going to be more than sufficient for my own home without overthinking...That's what we have, except for the resilient bars as well. It's pretty quiet. I can hear the baby elephant (SWMBO) tramping about upstairs sometimes,but that's about it. Caberfloor plus carpet on top of the joists.]]>