Hi Michael,
The foam board is generic pink and blue styrofoam. It's actually pretty hard to come by in the UK, only a few outlets - I guess our construction industry use different insulating materials to you guys in the States.
I don't know of the specific manufacturer, but I believe it's readily available in the US, at places like Home Depot and the likes? Perhaps the likes of Alex, Rod, Tim or Mike could confirm?
For the brickwork, I sliced away about 2mm thickness from the 'damaged' area. I then used a ruler and pen to mark out the horizontal lines of the brickwork, and 'scribed' the mortar lines with a ball point pen, adding the vertical lines afterwards. Is that what you meant?
Cheers for the compliment. You can get really good results using this foam - it's very forgiving.
Simon
You did such a nice job on slicing away the damaged mortar surface and scribing the bricks. It looks so real. I wish I could do work like that. Looking forward to the second building. A+ on this one! Michael