Credit alegna If you grew the bamboo or cedar in your garden and then it was anyway! These examples may not be the greenest and they feel costs a lot of money, but it must be wonderfully Baden wood. In the past, there was a wooden tub, marble or tiles. Cast iron bathtubs came in vogue since the 1880s, and the enamel on steel, now mostly formed acrylic, fiberglass or porcelain on steel. Wood retains heat longer than other materials bathtub. Bathtubs unfinished wood are used regularly or kept partially filled to avoid with a little water, they dry out and distort or shrink. Source: green source of inspiration Credit: D'vontz modern wooden tubs Modern stone bathtubs