Browse Forums Renovation + Home Improvement Re: timber for outside in WA 2Sep 04, 2012 12:51 am Hey Polly, While I can't answer your question directly, I'd certainly look at the ratings given to treated pine. I don't claim to know what all the ratings mean. A quick search on Google reveals -> http://www.ozdiyhandyman.com.au/2008/03 ... ting.html; Quote: Here is a simplified list of the different "H" ratings and their applications: "H1" : To be used indoors, above the ground. Not resistant to termites. "H2" : To be used indoors, above the ground. Resistant to termites. "H3" : To be used outside, above the ground. Resistant to termites. "H4" : To be used outdoors, in ground or ground contact. Resistant to termites. "H5" : To be used outdoors, in ground with water contact. Resistant to termites. "H6" : To be used when in constant contact with salt water. or from another source cached article from <http://www.landscapesupplies.com.au/articledetail.php?articlesID=14&articles_catID=1>; Quote: What does an H3, H4 and H5 Rating Mean? The "H" rating for Treated Pine is an indication of the use to which the timber can be put and its resistance to rot and attack by termites or borers. H1 products are for use indoors above gound. Typical use of H1 products include, framing, interior furniture and joinery. Resistant to insects other than termites. H2 products are for use indoors above gound. Typical use of H1 products include, framing, interior furniture and joinery. Resistant to insects including termites. H3 products are for above ground use outside exposed to the weather and dampness. Typical use of H3 products include, decking, fence pickets, fence rails, pergolas, exposed bearers and cladding. Resistant to rot and attack by termites or borers. H4 products are for in-ground or ground contact use outdoors. Typical use of H4 products include, fence posts, sleepers, landscaping, garden edges and garden boxes. Resistant to rot and attack by termites or borers. H5 products are for in-ground, in water contact and ground contact as structural support components. Typical use of H5 products include, retaining walls and building poles. Resistant to rot and attack by termites or borers. H6 products are for prolonged contact with sea water. Typical use of H6 products include, piles, boat hulls, landings, jetty posts and cross bracing. Where used appropriately and installed correctly treated pine products should last a lifetime or more. Most manufacturers of treated pine products offer guarantees against decay, termite and borer attack of 25 to 40 years. Check with some timber merchants to see if similar ratings are given to hardwoods. There are products such as http://en.wikipedia.org/wiki/Creosote that can be used to treat timbers that are to be buried in the ground. If you are looking at treated pine, then look at the types of treatments and the situations in which you'd use each. For example CCA Treated Pine is generally frowned upon for use in stuff like childrens playgrounds/sandpits and vege patches. There are alternatives for these situations though. I hope this is a start. Engineering timber is certainly a less fuss option, times cheaper to supply and install and better withstands humidity. 1 15923 Thanks Simon, I guess I'm no concerned with the volume of the noise rather that dead and hollow sound and feel that is associated with floating floors. But I'm not sure… 3 6162 The most likely cause of your timber swelling (parquetry?) is either a plumbing leak or carelessly leaving water on floors after use or both. Without seeing, i am ignoring… 1 3280 |