Want to Exterior Insulate under PVC Cladding

[eggtastico]

I want to uPVC clad the rear of my property, as I like the look & my current wall is pebbledash render (which I hate the look of!).
My plan is to batten with timber & fit the uPVC cladding.
As it is a north facing room (Kitchen), it can be quite cold in the Winter - I am exploring the idea of putting insulation between the render pebbledash & the uPVC cladding.

Is this something that is viable? Was thinking something 10-20mm thick (the polystyrene boards?).
Not sure where I should put breathable membrane if needed.

Anyone with any ideas/input?

I plan on DIYing to give me something to do!
Its only about 15sqM that need doing.

 

[^woody^]

You can do that and don't need a membrane.

I can't see the point of 20 mm of polystyrene, which is the least effective insulation material and not much better than if you just left an air gap.

 

[eggtastico]

Can you recommend something i should be looking at for insulation?

 

[endecotp]

http://www.celotex.co.uk/applications/wall-insulation/external-solid-walls

 

[^woody^]

Yes any of the foil faced boards, which are approximately three times as good as the same thickness of white polystyrene.

 

[freddiemercurystwin]

Consider Marley Weatherboard, cheaper than upvc last time I checked and looks about 1000 times better.

 

[endecotp]

Yes any of the foil faced boards, which are approximately three times as good as the same thickness of white polystyrene.

Not 3X. Something liike 50-100% better.

 

[eggtastico]

Thanks for the replies - should be enough to work from.
I was going to go with homeline upvc as they will deliver direct to me - but will take a look at the alternatives.