My new room is facing west. I am seriously thinking of cladding the exterior with something to block heat.........

Anyone knows how much to do external wall insulation i.e. extruded polystyrene foam XPS?

This post has been edited by Fazab: Jun 12 2014, 01:46 PM

Internal wall half will be covered by built-in wardrobe. The other half I will DIY cladding using wood composite like PrimaBoard.

Hm....come to think of it....bit overkill? But I will like a cool ('cold') room.

Yr room reminds me of a Balinese resort.....

Room in new house faces the evening sun. Room in current house also. No escape.

Plan is to lay down a wood framework on the wall and fasten the composite board to it.
So there will be a layer of air pocket for insulation. If it still not good enough will do the exterior.
El Nino is here, just the right time to test things out.

For some reason, the developer only made one small window on 24 ft of wall.
So less of a problem. Will use a thick blind outside.