The tiling was done in the same way as the bricks. Tiles 1" by 1/2" cut out of a piece of painted sandpaper, then stuck onto the upper bay overlapping each one to give the 3D effect.
The lead flashing was part of a cereal box cut to shape and sprayed using some grey primer we had in the garage. To give it a slight metallic look, I brushed some watered down PVA glue over it.
