Timspec Hardwood Decking
ITI Timspec offers a range of Hardwood decking species. Suggestions and guidelines to make a right choice are: lengths available, moisture content, durability, profile, bleeding, splintering, hardness, width of the board and cost.
Generally, decking is only sold on a mixed length specification, this means that if you order 100 linear meters, you will get a range of lengths.
Some of the species such as Kwila, Radiata, Western Red Cedar and Yellow Cedar have very good length specifications, so expect a nice mix of short, medium and long lengths. Other timbers such as Jarrah and Vitex, have short length specifications, so expect lots of shorter lengths and few longer ones. Short lengths are not normally a problem as the installer would usually scatter the shortest lengths around the deck so they are not too obvious.
Timber swells and shrinks as it gains/loses moisture from the environment. If you are ordering decking timber, make sure it has an appropriate moisture content (usually Air Dried is sufficient, but some timbers may need to be Kiln Dried).
Durability is explained in more detail in our installation manual on downloads page. Basically, decking should be long lasting and stable. Many factors are considered to build a durable deck which includes choosing right species, giving the right treatment, fixing correctly and the list goes on. For example, we would not recommend using Macrocarpa for decking because the boards may have sap on the edge that will decay very quickly. Find more information on decking in our installation manual : Here.
Usually, Decking is available with smooth face on both sides. Reeded one face is available on request (also known as grip-tread) which has a smooth back.
Most timber species will bleed. which is leeching of a coloured sap or tannin. For many timbers, the amount of bleeding is minimal and will have no effect. Please contact ITI Timspec for a suggestion on the minimum and maximum bleeding species.
It is recommended that only decking screws are used for fixing decking to joists. This is because as the timber naturally swells and shrinks, it may push up a smooth shanked nail. It is also recommended (but not as common in practice) to pre-drill screw pilot holes.
Click here, to find the download for the Installation Manual. And here for more information on decking installation.
Care & Maintenance
Care must be taken to ensure that the timber and accessories are kept clean and dry, and are not damaged whilst in storage awaiting application. Extra care is to be taken while handling timber profiles to ensure that they are not damaged. Upon delivery, timber is to be stacked flat and level on bearers/dunnage that are a maximum of 900 mm apart and atleast 100 mm off the ground. Timber should either be sorted inside an enclosed building or covered with an additional waterproof layer and protected from the elements when stored outside.