Tony,
Thanks, just so i completely understand, are you saying that I could achieve the correct standard but my roof rafters would have to be insulated out to about 250mm
Cheers
Ahhhhhh, I see, I have got a concrete loft floor / ceiling which is 150mm thick, I wonder if that meets the 0.16 watts per sq. m. per 1 degree temperature difference, (if you get my drift!)
But I have also got the roof insulated to 150mm glass fiber rolls in plastic
Ok, so when asked the question how thick should loft insulation be, what is the answer and who recommends, determines, sets that thickness.
Surely their must be a BR that stipulates such a thing especially as BR's stipulate so many other building stuff.
Also so many websites quote "current...
Every web site I read on loft insulation states current building regulations recommend 270mm insulation
Can I find in the actual building regulations documents that says this, NO I CANNOT.
Please can somebody please, please tell me what part, chapter, sub section it is.
Thanks in advance
In my loft I have a 150mm concrete floor and the roof rafters are insulated with 150mm insulation.
will this configuration stop heat loss and thus save me money on heating bills.
Or does the heat just pass through the concrete ceiling/floor and then stay in the loft space.