On loft insulation

Oct 03, 2008 1 Replies

I have a one-storey cottage with a roof that slopes down past the loft (if you see what I mean). It has fibre-glass insulation on the flat part of the roof, but not on the sloping part.



I have an idea I read somewhere that insulation should not go down to the eaves. Is that correct?



Incidentally, the loft-space is very restricted:



50cm high in the centre. A professional insulator declined to go up there to add further insulation.

Any suggestions how to do this would be gratefully received.


Are you asking if it shouldn't go down the 'sloping' part - which presumably forms part of the ceiling downstairs?

If so, then you're right in that you shouldn't completely block this space with insulation because it needs ventilating to avoid rot setting in - damp will get into the area from condensation coming up from the living area, and probably at least the odd bit of rainwater too.

The kosher way to do this is to rip down and rebuild the slopey ceilings from below, incorporating solid foam insulation and ventilation space. I've done this in one room of our house but it was a hell of a job which is why only one room's been done so far! ;-)

Have a look through the archives of this group for more info - this topic comes up quite a lot.

David

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