Dan F Posted November 22, 2020 Share Posted November 22, 2020 (edited) Anyone used any of these screedboard alternatives for reducing noise in timber-frame build that have worked well? Screedboard28 at around £35 isn't cheap! Chipboard + 10mm Foam - Cellecta Deckfon Chip. 26mm - JCW Acoustic Deck. 28mm - Karma Overlay. 26mm Gypsum + 10mm Wood Fibre - Knauf Brio 28mm - Knauf Girafloor UB 28mm - Knauf Girafloor DLH/FHB 35mm - Karma Smart Floor 28mm Cellecta Deckfon seems to be available for around £15/m2, but my feeling is that a gypsum board is better option for impact noise and is also potentially better for bathrooms too. Hard to know what the practical difference is though as I expect manufactuer values for noise reduction aren't really comparable. Edited November 22, 2020 by Dan F Link to comment Share on other sites More sharing options...
Mr Punter Posted November 22, 2020 Share Posted November 22, 2020 I use the Screedboard 28 in flats. It is simple to install and the surface finish is good enough for LVT flooring. On the ceilings beneath I spec resilient bar and 2 layers of 15mm Soundbloc plasterboard. Link to comment Share on other sites More sharing options...
nod Posted November 22, 2020 Share Posted November 22, 2020 2 hours ago, Dan F said: Anyone used any of these screedboard alternatives for reducing noise in timber-frame build that have worked well? Screedboard28 at around £35 isn't cheap! Chipboard + 10mm Foam - Cellecta Deckfon Chip. 26mm - JCW Acoustic Deck. 28mm - Karma Overlay. 26mm Gypsum + 10mm Wood Fibre - Knauf Brio 28mm - Knauf Girafloor UB 28mm - Knauf Girafloor DLH/FHB 35mm - Karma Smart Floor 28mm Cellecta Deckfon seems to be available for around £15/m2, but my feeling is that a gypsum board is better option for impact noise and is also potentially better for bathrooms too. Hard to know what the practical difference is though as I expect manufactuer values for noise reduction aren't really comparable. For the ceilings I’ve started using these as it out performs Res bar Link to comment Share on other sites More sharing options...
Oz07 Posted November 22, 2020 Share Posted November 22, 2020 @nod and his great camera again. What is it? Link to comment Share on other sites More sharing options...
nod Posted November 22, 2020 Share Posted November 22, 2020 26 minutes ago, Oz07 said: @nod and his great camera again. What is it My dusty work phone Gypliner on click ceiling brackets Quick and easy to install Great acoustic performance 1 Link to comment Share on other sites More sharing options...
Moonshine Posted November 22, 2020 Share Posted November 22, 2020 (edited) 33 minutes ago, Oz07 said: @nod and his great camera again. What is it? They look like 70mm GAH2 hangers fixed to the joists. Edit: looks like i was wrong Edited November 22, 2020 by Moonshine Link to comment Share on other sites More sharing options...
Dan F Posted November 22, 2020 Author Share Posted November 22, 2020 @nod - Do you have a British Gypsum for system reference for the approach you are taking? Keen to take a look at the details.. - What did you do on top of joists/decking? Link to comment Share on other sites More sharing options...
nod Posted November 22, 2020 Share Posted November 22, 2020 1 hour ago, Oz07 said: @nod and his great camera again. What is it My dusty work phone Gypliner on click ceiling brackets Quick and easy to install Great acoustic performance They are Gypliner ceiling brackets On the floor is a 22 mil cabba deck Then we laid 50 mil acoustic slab Then 22 mil gyprock plank Acoustic sealing both around the perimeter and finally laid a 22 mil TG chipboard floor glueing the joints only with a 10 mil expansion gap around the edge It’s like walking on concrete Link to comment Share on other sites More sharing options...
Dan F Posted November 22, 2020 Author Share Posted November 22, 2020 (edited) 9 minutes ago, nod said: On the floor is a 22 mil cabba deck Then we laid 50 mil acoustic slab Then 22 mil gyprock plank Acoustic sealing both around the perimeter Wow! A 72mm build-up on top decking! And I thought potentially putting a 35mm Knauf Gifafloor FHB (with 10mm WF resilient layer) on top of 22mm caberdeck might be overkill. 9 minutes ago, nod said: Gypliner on click ceiling brackets Quick and easy to install Great acoustic performance Will have to study the whitebook. We were thinking of putting fireboard under joists on resiliant bars (we have fair amount of steel) and then using a second layer of PB on hangers for light-fittings. Surely if you just use suspended ceiling but then have lots of downlights, it's not quite as effective? Edited November 22, 2020 by Dan F Link to comment Share on other sites More sharing options...
nod Posted November 22, 2020 Share Posted November 22, 2020 33 minutes ago, Dan F said: Wow! A 72mm build-up on top decking! And I thought potentially putting a 35mm Knauf Gifafloor FHB (with 10mm WF resilient layer) on top of 22mm caberdeck might be overkill. Will have to study the whitebook. We were thinking of putting fireboard under joists on resiliant bars (we have fair amount of steel) and then using a second layer of PB on hangers for light-fittings. Surely if you just use suspended ceiling but then have lots of downlights, it's not quite as effective? We had no other options 2450 ground floor 2500 first floor Still left us with just under 2.4 Hand I was dealt Link to comment Share on other sites More sharing options...
Dan F Posted November 22, 2020 Author Share Posted November 22, 2020 7 minutes ago, nod said: We had no other options 2450 ground floor 2500 first floor Still left us with just under 2.4 Hand I was dealt We have: 2.4m first floor (+ 50mm allowance for screedboard+flooring) 2.5m ground floor (+ 100mm allowance for ceiling void/pb or whatever we do there) Link to comment Share on other sites More sharing options...
nod Posted November 22, 2020 Share Posted November 22, 2020 1 hour ago, Dan F said: Wow! A 72mm build-up on top decking! And I thought potentially putting a 35mm Knauf Gifafloor FHB (with 10mm WF resilient layer) on top of 22mm caberdeck might be overkill. Will have to study the whitebook. We were thinking of putting fireboard under joists on resiliant bars (we have fair amount of steel) and then using a second layer of PB on hangers for light-fittings. Surely if you just use suspended ceiling but then have lots of downlights, it's not quite as effective? We had no other options 2450 ground floor 2500 first floor Still left us with just under 2.4 Hand I was dealt The Gypliner on the underside of the floor with the joists packed with insulation Finished with 30 mil of sound block is plenty for a residential home The properties we soundproofed to such a high standard where four story houses that had been built and stood for 12 years The banks had decided to convert them into flats selling at 250 k plus Link to comment Share on other sites More sharing options...
Dan F Posted November 25, 2020 Author Share Posted November 25, 2020 Got some Knauf Gifafoor off ebay in the end. £15/m2 vs approx £30-35/m2 for the cellecta screedboard. Slightly thicker too at 25+10mm. Link to comment Share on other sites More sharing options...
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