Hi Everyone

I would like to install external wall insulation to a 1930s end of terrace solid brick house.

The owner has scheduled all the windows and doors to be replace very soon with double glazed units.

I am keen to use the CSCO government scheme to get the discounted external wall insulation, which from memory is 90mm XPS.

Putting internal wall insulation is not an option. Well, you might get away with 25mm, but the house is too small really.

So my main question is, would it much better to install the windows in the insulation layer, as opposed to just replacing the current windows and doors which are flush to the outside brick, and then just slightly overlap the frames.

What this means really, is to delay the installation of the windows by a few months, get the insulation installed and then, put the windows in, but on some sort of brackets to support them in the insulation layer. Obviously to just replace the existing windows in their current location, and put the insulation on after would be much easier.

I've put some photos of the house, plus a sketch of what I mean in an album here because they are too large to attach: http://www.thebreadcrumbtrail.org/gallery3/index.php/Misc-Travel/Eco-Living/Low-Energy-Buildings_001/External-Wall-Insulation

Thanks

I would fix new marginally larger windows to the outside face of the walls then do thicker EWI than you are suggesting wrapping it round the frames, with head drips and sills that project with a drip. You can finish the EWI in a variety of ways

Unless you knew they owned the lane and no-one else had rights to drive up it, i would be wary about building outwards. Whenever one builds beyond the boundary line (foundations in some circumstances excepted) one's at risk of being forced to take it down by the true owner.

I think you'll find that's. http://www.n2e-ewi.co.uk/