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More Insulation Questions

coldheat · 2008-02-19 14:32:39

I need help on the current best method. I am currently in the process of planning my new build, which will be starting mid-March this year. It is a 2 story building of 187m2 per floor, with a ground source heat pump, heat recovery vent system, UFH, and going with concrete block work rather than timber frame. On the ground…

19-02-2008 3:32pm

#1

coldheat

Closed Accounts Posts: 4 ✭

Join Date: February 2008

Posts: 3

I need help on the current best method.

I am currently in the process of planning my new build, which will be starting mid-March this year. It is a 2 story building of 187m2 per floor, with a ground source heat pump, heat recovery vent system, UFH, and going with concrete block work rather than timber frame.

On the ground floor I am putting in 150mm structural concrete floor, 150mm PU, UFH + 75 screed. This I am happy with.

However with the cavity I do not know what to do and need help. Do I make it?
1) 100mm + 60mm PU insulation and 100mm dry lining
2) 150mm +(pumped or 100mm PU) and no dry lining
3) 150mm + (pumped and 60mm PU) and no dry lining
4) 2/3 above with dry lining
5) None of the above and move to a warmer climate?:cool:

The roof area I can retro fit if I don't get it right, but I feel I need to get the walls right before I start. I like the idea of number 3) above because it will force the PU against the inner leaf and fill any gaps due to poor insulation fitting by the block layers.

Please help, as I have being bouncing back and forth between different methods.

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Comments

#2 19-02-2008 3:41pm

sinnerboy

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do no 1 but split dl into 2 layers of pu as i described here

http://www.boards.ie/vbulletin/showthread.php?t=2055235906

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#3 19-02-2008 4:10pm

coldheat

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Thanks Sinnerboy.
Should I vent the cavity with this method?

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#4 19-02-2008 4:17pm

sinnerboy

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no . buy homebond manual and look at cold bridging details

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#5 19-02-2008 5:11pm

coldheat

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Join Date: February 2008

Posts: 3

Will do. I have been in contact with Homebond who advised that their 6th edition is due out mid march and they don't have any stock of the old 5th edition.

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