Stone houses by Alea Mosaic Brick stones: the stones are real, made of red pottery tone; even bricks. Something rounded and so old-looking. Wood: doors, windows, later invisible walls, and the roof are precisely cut from plywood. Click together and a few drops of glue suffice. Mortar is not required. Roof: As you look at the top as a gulliver, the roof is best visible. This sight is worth it. The flannelette tails are quickly laid and are crowned by matching bricks. The adhesive becomes very firm, but remains softened for emergency.