What is Treated Pine?

Pine’s fast growth and sourcing from plantation-grown forests in Australia makes treated pine decking one of the most popular, cheap, and sustainable decking materials available.

As one of the most commonly used and versatile timbers in the world, treated pine is an old favourite and is often used around pools, for fencing, in gardens, to create the sub frames for decks, and as decking material itself.

Treated Pine Appearance

Untreated pine is golden white in colour but will vary according to the treatment applied. Because pine is a softer wood, it is loosely grained and prone to knotholes.

Its unique ‘blonde’ appearance can be painted to match any colour scheme or stained to highlight the natural timber.

Treatments

There are several pine treatments available; the ‘H’ denotes the level of treatment and what the treated timber can be used for.

These treatments from H3 have been used to provide protection, extend the life of the timber, and make it suitable for structural exterior use.

Hazard Level Exposure Specific Service Conditions Biological Hazard Typical Uses
H1 Inside, above ground Completely protected from the weather and well ventilated and protected from termites Lyctid Borer Framing, flooring, furniture, interior joinery
H2 Inside, above ground Protected from wetting, Nil leaching Borers and Termites Framing, flooring, etc., used in dry situations sometimes known as blue pine
H2F Inside, above ground Protected from wetting, Nil leaching Borers and Termites Framing (envelope treatment) used in dry situations south of the Tropic of Capricorn only
H2S Inside, above ground Protected from wetting, Nil leaching Borers and Termites LVL/Plywood (glue-line treatment) used in dry situations south of the Tropic of Capricorn only
H3 Inside, above ground Subject to periodic moderate wetting and leaching Moderate decay, borers and termites Weatherboard, fascia, pergola posts (above ground), window joinery, framing and decking. Min. clearance above ground of 50mm
H3A Inside, above ground Products predominantly in vertical exposed situations and intended to have the supplementary paint coat system that is regularly maintained Moderate decay, borers and termites Fascia, bargeboards, exterior cladding, window joinery, door joinery and non-laminated verandah posts
H4 Outside, in-ground contact Subject to severe wetting and leaching Severe decay, borers and termites Fence posts, greenhouses, pergola posts (in-ground) and landscaping timbers
H5 Outside, in-ground contact, contact with or in fresh water Subject to extreme wetting and leaching and/or where the critical use requires more protection Very severe decay, borers and termites Retaining walls, piling, house stumps, building poles, cooling tower fill
H6 Marine waters Subject to prolonged immersion in sea water Marine wood borers and decay Boat hulls, marine piles, jetty cross bracing
Source: Timber.net.au

Pine Installation

Before installation of your treated pine decking at home, it is crucial that your sub frame is correctly designed and installed to accommodate your deck. Your treated pine products can be fixed with twist nails or, ring shank nails but the best way is to use is screws.

Treated pine decking will take up or lose moisture depending on dryness or moisture from the environment, causing the timber to expand or contract. Ensure gaps are provided between the decking boards which will allow for the expected expansion. Generally 3-6mm.

For handling and construction with treated pine, decking builders should observe specific Material Data Safety Sheets (MSDS) depending on the preservative used.

If this is too much and you’d rather a professional complete the work to the highest standard contact us to get three quotes from our certified installers.

Pine Decking Maintenance

Treated pine decking must be used in conditions appropriate to its hazard rating. As a natural product, timber will age and react to environmental conditions. Weathering effects in timber that would usually occur naturally over time include:

  • Cracking
  • Splitting
  • Checking
  • Twisting
  • Cupping
  • Bowing
  • Mould

It is crucial to protect your treated pine decking with paint, oil or another sealant and maintain this protection. Using dark coloured paints or stains may worsen issues such as cracking and checking as it will cause an increased intake of heat.

Your treated pine decking must be sealed before or immediately after the timber is installed. It is advisable to use a quality primer and paint in light colours.

Both oil-based and water-based exterior wood stains are available which may contain water repellents, fungicides, and algaecides for longer life. The service life of treated pine decking is dependent on the level of maintenance and the expectations of the owner.

Want to learn more about timber decking? Check out our 4-Minute Guide to Buying Timber Decking.

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We couldn't be more pleased with the result of our new decking built by Dean and his team from Allstyle Build using composite decking sourced from Decking Perth. Dean's customer service and attention to detail was really appreciated and his pricing was value for money given the excellent result. Wouldn't hesitate recommending both Allstyle Build and Decking Perth's products for any decking project.
Paul Hamersley
Paul Hamersley
11:43 24 Mar 22
Ive just had my new composite deck supplied by Decking Perth. The whole process was so easy and professional. James and Eric from JLA Carpentry did a fantastic job doing the installation. The workmanship is top class. Highly recommended.
Steve Blight
Steve Blight
04:46 09 Mar 22
I had no idea where to start when it came to getting decking installed. I was so pleased when I found Decking Perth because they did all the tricky stuff for me - all I had to do was tell them what I was after and what colour and they did the rest. The contractor I ended up choosing to do the instal was fantastic. Couldn't be happier with my new deck! So thank you!
Kealy Hardman
Kealy Hardman
08:12 19 Feb 22
We had our front entrance decking replaced with the composite product - Spanish Saffron colour - and am super happy with the outcome. The service and advice/options provided by Perth Decking was very professional and Eric and his team did a fantastic really great job.Recommend Perth Decking and their teams without any hesitation.
Nico Spangenberg
Nico Spangenberg
10:35 13 Feb 22
Mazlin Junid
Mazlin Junid
03:04 09 Feb 22
Highly recommend Decking Perth. They were super helpful from the initial shop visit to the many questions and queries I had, right through to the installation by the fantastic Jake. Cannot fault.
anna wingell
anna wingell
09:35 17 Jan 22
Fantastic experience from start to finish. Ashleigh at Decking Perth was very helpful and the installers Michael and Liam from Lesgo Construction were reliable, friendly, on time and did a quality job. Nothing was to much trouble and I would definitely use them again..
Rod Wright
Rod Wright
10:40 13 Dec 21
Great service and product
Ryan C
Ryan C
05:12 13 Oct 21
Decking Perth provide great advice for novice deck buyers by showing you a wide range of products underpinned by knowledge and a conduit to deck builders. A couple of days after we visited Decking Perth one of their preferred contractors provided a very competitive quotation and we engaged AllStyle Carpentry. Decking Perth supplied all materials as they are a One Stop Shop for the contractor. The Modwood Xtteme deck looks fantastic and we could not be happier with it. Thank you Decking Perth as your business supported our thinking and your advice saw the planning come together and we now have a lovely deck.Phill Cribb
Phill CRIBB
Phill CRIBB
10:14 21 Apr 21
Could not recommend Deck Perth more. I had a small area at the front of my house which needed Composite decking supplied and installed. Visited their shop for ideas, then they organised a contractor to attend for a quote to install. All done within 2.5 weeks and over the moon with the end result at a reasonable price, thanks again
Owen Taylor
Owen Taylor
04:01 08 May 20
I contacted Decking Perth regarding an extension to our current Trex Deck. They took my details and within 4 hours I had been contacted by 2 decking installers and both had attended and quoted within 3 days. Jamie from Elite Decking had the job completed the following week! Lovely team, quiet, clean and tidy workers, on time and on budget, attention to detail exceptional. You cannot tell the difference between the 5 year old deck and the new extension. Highly recommend Elite Decking and Decking Perth.
Louise Bray
Louise Bray
06:27 28 Jan 20
I had some Trex (tiki torch colour) decking installed just before Christmas 2019. Jamie was great to deal with and did a great job installing the product. He and Phil were also very helpful in choosing the best product. Thanks guys! I have no problems recommending Decking Perth to others.
Peter Coulson
Peter Coulson
23:30 05 Jan 20
Great service, professional products.And easy to deal with
Dean Bumbak
Dean Bumbak
19:02 04 Dec 19
As an ordinary DIY supported by a Team of Rockstars to achieve a tremendous result and nothing was too much trouble Cristian and Cassandra.
Aaron Henley-Martin
Aaron Henley-Martin
07:36 22 Nov 19
We were seeking a good quality decking oil for our garden landscaping and out-door shower project. We found the reviews on-line for Cutek Extreme Clear wood preserver were very good and suited us as it is absorbed by the timber thereby ensuring greater life expectancy and a great grain enhancer. In addition re-coating every 18mths to 2yrs appealed as the timber only requires a high pressure wash and a dry off period before re-coating. No sanding required. We chose a New Bronzetone tinter to deepen and enrich the merbau timber grain for an excellent aesthetic finish. Next Project the pool deck!
Chris Pallett
Chris Pallett
04:13 08 Nov 19
Marty Brausch
Marty Brausch
08:47 29 Jul 19
I contacted Decking Perth to see about getting my small courtyard sorted. Cassandra recommended 2 companies to install Trex decking. Marty and his team did a great job. I'm really pleased with the results.
Belinda G
Belinda G
03:34 13 May 19
I use Decking Perth as timber and composite decking supplier, and have dealt with Adrian for years. The team are passionate and strive for innovation, always presenting the latest products to benefit the end user. I'm grateful for their knowledge and desire to see the best fit for purpose product for both client and contractor alike.
Matt Libardi
Matt Libardi
12:47 15 Apr 19
I contacted Decking Perth to get my alfresco area upgrade to latest trex decking. She recommended two subbies however I choose one subiie who is Easy Deck. It was highly impressive to note the way specially Casandra how she provided total service package including resource, material and also best economical options. This is the best customer service i ever had experienced. follow up on work progress, quality control etc are other events Cassendra followed up with customer. it was very impressive work indeed by Easy Deck and Decking Perth.
Great job at a fair price. Thanks Joe!
Steve Collins
Steve Collins
04:25 20 Aug 18
Aaron East Landscape Designs used Trex decking and did an absolutely awesome job. Very professional. Would highly recommend them for decking and landscaping
Kelly Berry
Kelly Berry
03:27 01 May 18
21m2 of decking needed around pool area. Decking Perth provided an easy service to get the job done quickly and at a very good price. Installation contractors were switched on and provided smart options to get around a couple of problem areas. Cannot fault the installation, it is fantastic and sets off the pool area fantastically.Can highly recommend Decking Perth to anyone.
Tim Waldby
Tim Waldby
13:47 05 Oct 17
Sharon Moieni
Sharon Moieni
06:14 26 Sep 17
Made the quoting process very simple and easy and checked in regularly to make sure that we were happy with the process and the finished job.
Samantha Stenersen
Samantha Stenersen
02:06 15 Sep 17
Adrian and the team were extremely pleasant to deal with and provided friendly and informative service throughout the sales process. A thoroughly positive experience from start to finish and the Trex products we purchased look outstanding.
Jon G
Jon G
07:06 12 Sep 17
The service provided by Adrian at Decking Perth was exceptional in helping us select our decking and providing advice regarding the laying. The Torona Brown Trex decking looks great. Neville
Neville Jones
Neville Jones
04:58 06 Sep 17
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