Treated Pine Sizes For Decking


Treated pine sizes vary depending on their intended purpose. Softwoods carry timber in varying lengths and sizes and can also pre-cut the timber according to your design specifications.

Treated Pine Timber Has Its Advantages

Treated pine timber commonly comes from Radiata, the dominant species grown in Australia’s industrial plantations. It is abundant, affordable, has minimal impact on the environment and totally suited for use as decking material. As a bonus, treated pine timber comes in regular lengths and sizes so it gives your timber structure a consistency that may be difficult to achieve using other timber species. And since it stains well it is easy to work with.

Decking With Treated Pine Timber

The advantages of using treated pine timber make for a highly versatile decking material. In fact, it has always been a favourite of builders. Treated timber is suitable to use for posts. It is also the go-to material for decking substructure. And it does very well when used for railings, screening, cladding and for decking boards.

Treated Pine Sizes

Standard timber lengths (in metres) are 0.9, 1.2, 1.5, 1.8, 2.1, 2.4, 2.7, 3.0, 3.6, 4.2, 4.8, 5.4 and 6.0. Softwoods treated pine generally come in these lengths but do note that not all sizes are available at all lengths.

Dimensions for post timber (in millimetres) range from 88×88 to 120×120.

Timber for screens range from 42×19 to 140×19.

Channel and handrail material range from 66×30 to 88×42.

And finally, treated pine timber for decking boards range from 70×22 to 90×22.

For more detailed information on treated pine sizes, check out the Softwoods site for standard timber size measurements.

Customising Treated Pine Sizes

There is also a way for you to get the right timber sizes for your decking project. Enter your design dimensions in Softwoods’ online design tool and have your treated pine timber cut to the exact size you need and delivered right to your doorstep.


Get a FREE Quote for Your Pergola or Deck

Our online quoting tool lets you specify the measurements and other details about your planned pergola or deck. It then automatically generates an estimate for you.

Attached gable pergola with timber liningIronbark deck over sloping site with inbuilt stairs and stainless steel balustrade

Softwoods is a family owned South Australian company that has been trading for over 30 years.


We understand that making changes to your home is a major and important thing, and we take care to understand that every project that we handle should be done with as much care as we would expect is used in our own homes. Learn more about Softwoods.

We service, support and ship Australia-wide.

Use our design tool for a free quote or get in touch via email or phone
for a design or price on your project or materials.

Croydon, SA

573 Port Road
West Croydon SA 5008
Corner Rosetta Street

(08) 8346 1499

Modbury, SA

493 Wright Rd
Modbury SA 5092
Corner Wright & McIntyre Roads

(08) 8396 4044

Lonsdale, SA

28 O'Sullivan Beach Road
Lonsdale SA 5160
Corner Dyson Road

(08) 8384 5133

Perth, WA

Suite 15 Plaistowe Mews
102 Railway Street
West Perth WA 6005

1300 737 465