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Spot on. How erm.. floppy is it ? And is it also split into 3 or just 2 (ie 400 or 600 )

Interesting... cos its 5 times the price for the Acoustic - £53 ExVat at TPs.

Thanks Ian, I have 200mm to play with so I am thinking 100mm acoustic and as I have it anyway I may as well top it up with the Earthwool loft roll. Thing I cant work out is what the actual difference is, loft roll is very soft and wont hold its own weight. I was expecting the acoustic stuff to...

Update - according to Knauff's own helpline, the Acoustic Roll 100mm meets building control, the Earthwool Loft Roll doesnt for use between floors. I am hard pushed to see the difference in the 2 products to be honest. Their density per M/2 is very similar...

Hi everyone, Some of you will know I am part way through building a loft conversion on my bungalow. Looking at the insulation / soundproofing to go between by new ceiling/floor. Last year I stripped out all the old fiberglass and replaced it with this:-...

Slight change, my local TPs only has 1800 x 900 12.5mm in stock. Given my joists are on 450mm centers does it really matter apart from a couple more butt joints.

Be worth asking BC about steel size, when I did my kitchen / diner knock through my BC guy advised what to install and signed it off once fitted. If a SE calc is needed, about £80 approx per calc if its simple. I put my pad stones in first but you must let the mortar go off for a few days...

Thanks guys. I have a board lifter too, my mate Karl :)

Hi all, Quick one, some of you may know I'm doing most of the work on my loft conversion on my bungalow. I have taken down all the ceilings and have new floor/ceiling structure ready to plasterboard. Question is should I be knocking off a bit of wall plaster so the ceiling boards sit 'into'...

Money back on what I returned and I replaced with 8 x 2. Supplier went above and beyond so gets my further orders too for that.

My new floor joists for my loft are 8 x 2 at 400 centers, wooden noggins screwed not nailed, and 22mm sheets of Egger Protect laminated board. They are about £10 a sheet well worth it. Glued and screwed at 300mm intervals to keep BC happy.

Thanks chaps. Spoke to BC and Structural Eng, both happy for me to use 8 x 2 C16. Max span allowed is 3.85 and my longest is just less. Timber supplier was spot on and will let me swap. Some of it but not all was bent out twisted so will make sure no one looses out, them or me. He has done me...

Hi, longest span is about 3.8m but they are big joists, was specd by the architect. Extra noggins might not fix all of them, a length of 3.2 has a deflection of nearly half its width and a lot of them are twisted too..

Quick update, fixings signed off by building control woohoo ! Unfortunately my 8 x 3 C16 timber joists I have stacked outside are all banana shaped grrrrr.. Been on site less that a week, not happy.

thanks chaps. will let you know how i get on !

thnking chemical route... http://www.screwfix.com/p/fischer-fip-300sf-polyester-styrene-free-resin-300ml/23386

Hi, Very keen to get my new floors in this weekend. Joist hangers on wallplate thrubolted to walls. New gable is in concrete dense blocks so used Fisher 10mm throubolts all good. Came to fix to party wall and disaster, fixings wont grip and tighten.... block is like cheese so im trying to...

Hi everyone, solution in the end was to pull all the ceilings down and put the new floor joists direct onto the downstairs walls. Bit more work but will end up a better job plus I end up with better headroom in the loft conversion:)

Quite right about scrim and I know from doing work in other rooms the bottom of the wall plate is about 2 to 3 inches below the ceiling height so it's going to mess up to walls which is ok I can fix that.

Thanks for the replies much appreciated. Can't build on the timber building control won't allow it. I'm hoping my builder suggests I can trim the joists and remove all the wall plate. Cutting sections out of it it tricky to do without damaging the ceilings as it is.