I think go for wood and keep it traditional. I think they use cedar for steam rooms normally. They may cost more initially but will function better for the purpose... with polycarbonate sheeting you will have the constant run off growing mould and mildew and the cleaning and maintenance will be difficult. Timber will expand and contract with the changes in humidity and temperature and then breathe and dry out well afterwards. It will also look way better. Just make sure the timber is not treated.

Hi I just thought I would leave a comment about the visibility of joins in reconstituted stone such as Caesarstone tops on islands longer than 3 metres. From a patern point of view; by selecting a style that has a fine grain certainly helps with reducing the visibility of a join. As for the join itself, the technology and tooling used to make such joints has come a long way in the last 10 years; therefore if you use a Kitchen Manufacturer who uses up-to-date stone fabrication methods, then such joins can be next to near invisible. Below is a kitchen we made with an Island that is over 4.3 metres long and has a join through the centre; where the join actually has to be pointed out to be seen. We have seen Kitchen Manufactures use the two height method but you really don't have to do this to achieve a long island. If you would like a long island, then you should not be put off by having to have a join; careful selection of your material, manufacturer and planning can achieve great results. Hope this helps anyone reading this article and the comments above.

sawdust plus glue = wood fillers for cabinetmaking so what else can be made from that combination? but are there already products on the market using sawdust?...

Hi Tammy, I agree that this is a Huge Question. Within our website we have devoted an entire section to different Kitchen Materials, with subdivided sectioned links devoted to each Material type. Here we discuss the Pros and Cons to these individual material types, designed to help people in their selection process. These pages may help you as a good starting point. At the bottom of this main page we have also set out numerous page links to various suppliers and manufacturers of these different material types that you may also find helpful for even more information. Hope this helps, Malcolm.