Synthetic tongue and groove 125 x 15mm are designed to outlast traditional wood and are completely maintenance free. This is a premium product that has zero costs after purchase.
It's made entirely from recycled CD cases and has a wood textured outer layer that makes it almost indistinguishable from traditional wood. However, unlike wood, it wont rot, warp crack chip splinter over time. Has the highest level of UV protection against direct sunlight, is frost proof and contains no toxic process selected preservatives. Painting or varnishing is never necessary.
This is a truly unique material that will stay looking as good as the day you bought for decades to come.