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cavanmann · 20-11-2011, 21:52

Hi

I am putting in 120mm of high density insulation along with my pour scread. what is the best way to do this. Should i put it in in 1 go? IS it safe to put a 75mm scread over 120mm of insulation?

Thanks

BryanF · 20-11-2011, 22:37

I see your still going it alone, was any previous advice accepted?

may I ask have you done a provisional BER or at least seen this, and all of this, understood all of this or a least considered this

Consider putting in more insulation maybe 200mm of kingspan or equivalent (120mm of EPS may not comply, check the BER) and tape the joints. while your asking your engineer or arch about the screed, ask them about how you can minimise thermal bridging and discuss quinlite blocks or similar approved, around the perimeter at the floor insulation level and also at load bearing walls at the same height.

kboc · 21-11-2011, 20:56

i put down 150mm of PIR, in 2 layers, bottom layer 50mm and top layer 100mm. 4" of concrete on top of that then. All is fine.

But,

go around the edges with strips of insul (i used 1 inch in some places and 2 inch in others) the idea is the concrete should touch nothing except the insulation. Sounds quite easy but it gets quite futtery, make sure who ever is doing it, is doing it right.

20-11-2011, 21:52	#1
cavanmann Registered User Join Date: Mar 2011 Posts: 23 Adverts \| Friends	Floor Insulation Hi I am putting in 120mm of high density insulation along with my pour scread. what is the best way to do this. Should i put it in in 1 go? IS it safe to put a 75mm scread over 120mm of insulation? Thanks

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20-11-2011, 22:37	#2
BryanF Registered User Join Date: Oct 2010 Location: Cork Posts: 2,422 Adverts \| Friends	I see your still going it alone, was any previous advice accepted? may I ask have you done a provisional BER or at least seen this, and all of this, understood all of this or a least considered this Consider putting in more insulation maybe 200mm of kingspan or equivalent (120mm of EPS may not comply, check the BER) and tape the joints. while your asking your engineer or arch about the screed, ask them about how you can minimise thermal bridging and discuss quinlite blocks or similar approved, around the perimeter at the floor insulation level and also at load bearing walls at the same height.

21-11-2011, 20:56	#3
kboc Registered User Join Date: Sep 2009 Posts: 375 Adverts \| Friends	i put down 150mm of PIR, in 2 layers, bottom layer 50mm and top layer 100mm. 4" of concrete on top of that then. All is fine. But, go around the edges with strips of insul (i used 1 inch in some places and 2 inch in others) the idea is the concrete should touch nothing except the insulation. Sounds quite easy but it gets quite futtery, make sure who ever is doing it, is doing it right.