Cold roof - Warm roof

[Devonish]

Hi,

On my single story extension plans the architect has drawn a roof that the builder says is a 'warm' roof. He considers this not to be necessary.

Is the warm roof a must, or are you allowed to put joist, felt and tiles which is what the rest of the house is like?

I know this would be an amendment and would have to be cleared by the Building Controller, but was not sure if regulations now said all roofs need to be 'warm'

 

[^woody^]

All roofs need to be insulated, and some need to be ventilated. It's a technical design issue as to the detail.

If this is a vaulted roof with no ceiling, then you will lose headroom with insulation below the rafters.

If it has a ceiling then it will need ventilating, and the vents might not look nice

 

[Devonish]

An update on the roof.

The building Controller said that a standard felt, batten and tile roof was fine. He felt that that this was a case of over designing a simple construction.
So that's all sorted.