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SAP rating - Loft roof insulation

 
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Self taught01



Joined: 03 Sep 2006
Posts: 8
Location: Huddersfield
PostPosted: Mon Sep 04, 2006 8:42 pm    Post subject: SAP rating - Loft roof insulation Reply with quote
Hi again

I now have a question about insulation. Building regs have told me that the rules about what type of insulation to use are a bit up in the air and as long as I can prove that how I insulate the roof complies to government guidelines
then what ever I do is fine. I need to insulate the roof with a U value of 0.2.

Could anybody tell me how to do a SAP calculation to show building regs which will satisfy them?

Thanks
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thescruff
Moderator


Joined: 03 May 2003
Posts: 4418
Location: Bath
PostPosted: Mon Sep 04, 2006 8:51 pm    Post subject: Reply with quote
Give me a few minute and I'll find the ODPM site where you can download the regs, with a form to work it out in the back.

Celotex is the best insulation, although there is a cheaper stuff just as good available from Travis Perkins.
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Self taught01



Joined: 03 Sep 2006
Posts: 8
Location: Huddersfield
PostPosted: Mon Sep 04, 2006 9:04 pm    Post subject: Reply with quote
A builder has let me know about some insulation called YBS insulation which is like a tinfoil quilt.

The company that supply this say it is complient with building regs and will do a SAP rating certificate for £75.

www.ybsinsulation.com

I am very limited for head height, My drawings say I should use 55mm kingspan but building regs say it is now 130mm minimum. This will take up an extra 12.5cm which is space I cannot afford to lose

This YBS stuff sounds ideal.

What do you think?
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thescruff
Moderator


Joined: 03 May 2003
Posts: 4418
Location: Bath
PostPosted: Mon Sep 04, 2006 9:05 pm    Post subject: Reply with quote
http://www.planningportal.gov.uk/england/professionals/en/1115314110382.html

You want all of them to read, but L1a & L1b & L2a cover your last question.
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Self taught01



Joined: 03 Sep 2006
Posts: 8
Location: Huddersfield
PostPosted: Mon Sep 04, 2006 9:13 pm    Post subject: Reply with quote
Thanks very much. Do you have a hot line LOL.

Very Happy

only kidding

your help is very much appreciated
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thescruff
Moderator


Joined: 03 May 2003
Posts: 4418
Location: Bath
PostPosted: Mon Sep 04, 2006 9:15 pm    Post subject: Reply with quote
http://www.celotex.co.uk/

Loads of pdf to download, has all the sap ratings, regs etc, worth a read.

As I said the best but you pay for it.

I fitted it between the rafters at home, then taped the joints and rafter to rafter with self adhesive silver backed tape, ( used for lagging as well)

The advantage was no loss of head room.
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