The Brickies turned up this morning, all 4 of them and set to with gusto. I'm not sure what they were doing 1st thing but whatever it was caused the collaspe of the coving in the stairwell ... narrowly missing me and DS but landing on the poor pooch! Thankfully he wasn't hurt, just a bit shaken up. When DH came in tonight he said he could see a solid breeze block wall in place and no tarpaulin in sight ... the Brickies are due again on Thursday, I think, to face the outside of the breeze blocks with brick. It will certainly help to raise the air temperature upstairs. I'll see if I can photograph it tomorrow.