| There are two main environmental factors to | | | | the any wood is sourced from forests which are |
| consider when choosing a lumber species for your | | | | managed responsibly on long term sustainable basis |
| deck. | | | | without affecting the surrounding environment and |
| Firstly if you are seeking a softwood species, it will | | | | complying with all legal requirements of the country |
| generally require treatment with a chemical | | | | of origin. For all too long, tropical (and other) forests |
| preservative to provide the durability required for a | | | | have been decimated to make quick, short term |
| long a service life. From time to time concerns have | | | | profits with devastating long term consequences. |
| been expressed about the potentially harmful nature | | | | Uncontrolled or illegal logging of forests in the |
| of the products used, mainly the potential danger of | | | | Amazon basin and in Sth East Asia have been of |
| the chemicals leaching out from the wood. Admittedly | | | | particular concern. Gradually however this situation is |
| this is grey area with conflicting "evidence" being | | | | changing, although illegal logging is still rampant in |
| presented to back up claims one way or the other. | | | | many third world countries in particular. |
| One of the most common chemical preservatives | | | | In an attempt to ensure the responsible harvesting |
| used in the past has been CCA | | | | and sustainable forestry practices yet assure the |
| (copper-chrome-arsenic) and although such products | | | | ongoing viability of existing forest industries, various |
| have been used for decades, some countries or | | | | international organizations have been set up, the best |
| regions have now taken steps to ban the use of | | | | known of which is probably the Forest Stewardship |
| CCA, at least in public spaces. | | | | Council (FSC). This non profit organization aims to |
| In recent years a number of alternative wood | | | | ensure responsible and sustainable management of |
| preservation products have come on the market | | | | forests and issues certificates of compliance for |
| which are claimed to have little or no potential | | | | lumber or wood products that are harvested or |
| harmful consequences. However whether these | | | | produced from such forests. End products can also |
| products will provide the same long term protection | | | | be certified by the FSC providing the entire chain |
| of the timber as CCA, remains to be proven. | | | | from lumber harvesting through processing and |
| But the main environmental factor to be considered | | | | production of finished products complies with the |
| to is that of the destruction of forests and ensuring | | | | regulations and requirements of the FSC. |