John Stumbles wrote:

On Wed, 17 Oct 2007 07:04:15 +0100, Eeyore wrote:

Here we used zinc ? plated steel ties to hold the 2 layers together.
Your method of cunstruction is certainly cheaper but I'd like to see
comparative thermal performance figures.

Eh? Extra long bricks (matching the facing bricks) cheaper than wall ties
(which are basically large stainless-steel paperclips)? I think not!

The ties are cheaper. Galvanised steel (not stainless) isn't expensive.

Graham