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 Post subject: Re: Taping and filling
PostPosted: Sat Apr 29, 2017 4:05 pm 
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Just to clarify it is a 50mm air gap

And rafters are doubled up side by side, original 3x2 with new 3x2 c24 screwed next to it. 4x1 is then screwed to the front of the 2 rafters effectively giving a 4x4 size. With 50mm kingspan this still leaves 50mm air gap


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 Post subject: Re: Taping and filling
PostPosted: Sat Apr 29, 2017 4:16 pm 
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You have 50mm air flow
Insulation is securely screwed over rafters
Rafters have been strengthened
Plasterboard securely screwed
All passed by bco and to regs

Crack on and get it plastered as per your original question, add a few more fixings if required.


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 Post subject: Re: Taping and filling
PostPosted: Sat Apr 29, 2017 4:17 pm 
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I appreciate all that has been said this far.

Even though some are sceptical I have done this to the drawings and the BI in my area is renowned for being awkward to the extent that builders often avoid jobs in my area. I have been told that first hand by several builders.

Based on this I know the work will be signed off but I appreciate I am a diyer and you guys do this for a living. Bearing in mind the work involved and that the plaster prep can be done in your opinion does it warrant all the work required to change to 100mm between and 50mm below. The SE engineer said the weight is fine he drew up all the calcs for the side by side rafters, the purlin plates and props and the 4 Rsj'. I have the £450 bill for that.


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 Post subject: Re: Taping and filling
PostPosted: Sat Apr 29, 2017 4:45 pm 
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Make sure the boarding has plenty screws in it then.Every 150mm minimum around the perimeter and down the centre of the board. Get a pro plasterer in after you've done this and he'll give you the best advice on what's required when he's seen it up close. Judging by the pictures it's not a job a diyer or amateur is going to make a job of. It needs addressing by a pro.


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 Post subject: Re: Taping and filling
PostPosted: Mon May 01, 2017 2:33 pm 
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As both Cotswold & Stevie says, just crack on and get the plasterer in as soon as!
Just stop worrying and after doing the few missing screws, leave the rest to your spread who
will sort it out, no problem!


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 Post subject: Re: Taping and filling
PostPosted: Tue May 23, 2017 9:47 pm 
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Just to update this thread:

I put in another 650 screws so now screws are at least every 150mm but mostly every 100mm.

I have used thistle bonding with jute tape for the wider gaps and easy fill for the normal gaps.
It all looks good and solid to be fair.

Plasterer is skimming it all next eeek so happy days.

I'll stick some photos up when done


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