I just got my latest copy of the model Engineer today - No.4496 - and there is the first of a two part article on using re-cycled plastic materials for exterior trackwork. The article is aimed at tracks for the larger scale, live steam tracks, but the writer has given some URLs of suppliers of materials which I thought might be useful to those with outdoor tracks. http://www.pnp-railways.co.uk/online-shop/ This company supplies track parts for larger scale railways, so maybe a bit too large for our smaller scales. http://www.ecoplasticwood.com/lumber-profiles/ This is a supplier of the materials as well as built up garden furniture, but there are no specific products for model railways. Unfortunately, no prices appear on the web site. http://www.filcris.co.uk/products/garden-railway-products This last site is probably the most appropriate, with a lot of materials aimed at the garden railway market, and all prices are shown. The second part of the article will probably appear in the next but one magazine in a month's time and I'll pass on any other references if there are any appropriate. Jim.