PermaTimber 146 CX in Spotted Gum
PermaTimberCompositeSolid core
- Board size
- 146 × 22 mm5.4 m lengths
- Cap
- Not published
- Core
- Solid
- Fixing
- Hidden clips or face screwsProLock Dual-Rebate Deck Clip (DFX430T timber subframe / DFX430M metal subframe)
- Warranty
- 10 years, residential
- Joist centres
- 450 mm maxResidential; 400 mm commercial
Spotted Gum: render colour, indicative. Sampled from the maker’s swatch image (Maker’s web page) on 6 Oct 2026 for the designer’s 3D view; never the real board. Order a sample before you choose.
Other colours of 146 CX (5)
Photos are the maker’s, credited. Render colours are indicative only.
Specifications
Every published fact, with its source and the day it was checked.
- solid coreclip groove14622
Deck board 146 × 22 mm · 5.4 m, drawn with solid core, cap not stated, grooved on both edges for hidden clips
The board
| Fact | Published value | Source · checked |
|---|---|---|
| Material | Wood-plastic composite | Perma Composites web page · checked |
| Core | Solid | Perma Composites web page · checked |
| Deck board | 146 × 22 mm, grooved both edges · 5.4 m lengths | Perma Composites datasheet · checked |
| Weight (146 × 22) | 4.1 kg per metre How this was readCX guide technical data, datasheet V6 and product page agree: 4.1 kg/lm (22 kg per board, 28.2 kg/m2). | Perma Composites install guide · checked |
| Recycled content | 87% How this was read"Made from 87% recycled materials" (datasheet, product pages and installation guides); composition is described as recycled hardwoods and plastics. | Perma Composites datasheet · checked |
Installation
| Fact | Published value | Source · checked |
|---|---|---|
| Max joist centres, residential | 450 mm How this was readCX guide p. 3, datasheet V6 and product page: 450 mm. V12 guide: residential spans are based on 2 kPa. | Perma Composites install guide · checked |
| Max joist centres, commercial | 400 mm How this was readCX guide, datasheet V6, product page: 400 mm. Load basis differs: V12 guide says commercial spans assume 5 kPa; the 146 Heavy Grain datasheet prints "400mm (3kpa)". | Perma Composites install guide · checked |
| Gap between boards | 1.5 mm | Perma Composites install guide · checked |
| End gap rule | Gap per metre of board: 1.3 mm under 10 °C; 1 mm at 10 to under 20 °C; 0.6 mm at 20 to under 40 °C; 0.4 mm at 40 °C and over · Gap at each end of a 5.4 m board: 7 mm under 10 °C; 5 mm at 10 to under 20 °C; 3 mm at 20 to under 40 °C; 2 mm at 40 °C and over · To walls 3 mm How this was readCX guide p. 7 table (gap at each end of a 5.4 m board: 7 mm below 10 C, 5 mm 10-20 C, 3 mm 20-40 C, 2 mm at 40 C and above; gap per metre 1.3 / 1.0 / 0.6 / 0.4 mm); 3 mm minimum Start/Stop clip clearance to a wall (p. 13); butt joins over double joists. | Perma Composites install guide · checked |
| Butt joints | Board ends land on a double joist How this was readV12 guide p. 7 and CX guide p. 8: butt joins must always sit over a double joist; stagger them; breaker boards (a board laid at 90 degrees, on double joists either side) are the preferred method for larger decks; full boards for runs up to 5.4 m. | Perma Composites install guide · checked |
| Minimum clearance under the boards | 100 mm How this was readV12 guide p. 3 and CX guide p. 6: minimum 100 mm clearance beneath boards for airflow, and a 1-2 mm per metre fall away from adjoining structures. All perimeter edges must be supported by joists (no overhang); do not rip below 45 mm wide. (also: fall 1-2 mm per metre) | Perma Composites install guide · checked |
| Subframes | timber and steel How this was readScrews specified for timber and steel subframes; Perma also supplies FRP joist systems (CX guide p. 6). | Perma Composites install guide · checked |
| Fixing: hidden clip | ProLock Dual-Rebate Deck Clip (DFX430T timber subframe / DFX430M metal subframe) | Perma Composites install guide · checked |
| Fixing: hidden clip | Mini Gap Clip DFX415 (146) with Mini Gap Anti-Creep Clip DFX515 (146) for a 1.5 mm gap | Perma Composites install guide · checked |
| Fixing: hidden clip | Start/Stop Clip DFX008 (first and last rows, edge boards) | Perma Composites install guide · checked |
| Fixing: face screw | Stainless steel screws DFX005 How this was readStainless steel screws DFX005 (timber) / DFX006 (steel) for the clips only; face-fix final boards at corners and edges only, pre-drilled 1.5 mm oversize, at least 40 mm from board ends and edges | Perma Composites install guide · checked |
| Installation guide | Perma Composites install guide · checked |
Tested performance
| Fact | Published value | Source · checked |
|---|---|---|
| Slip resistance (AS 4586) | P5 (wet pendulum) How this was readCX guide p. 3 technical data: wet pendulum AS 4586 P5 and oil-wet incline AS 4586 R11; datasheet V6 says "P5 / R11" (AS4586-2013). No test report is linked. | Perma Composites install guide · checked |
| Slip resistance (AS 4586) | R11 (oil-wet ramp) How this was readCX guide p. 3 technical data: wet pendulum AS 4586 P5 and oil-wet incline AS 4586 R11; datasheet V6 says "P5 / R11" (AS4586-2013). No test report is linked. | Perma Composites install guide · checked |
Warranty
| Fact | Published value | Source · checked |
|---|---|---|
| Warranty, residential | 10 years How this was readConsumer warranty: 10-year warranty period from date of purchase for defects in manufacturing or materials; cover to the first purchaser, registration form required; after year 5 the payout reduces pro rata by months elapsed over 120 (clause 8). Datasheet V6 and the range page also say 10 years. Colour variation is excluded (clause 7). | Perma Composites warranty · checked |
| Warranty, commercial | 7 years · computed, not quoted | Perma Composites warranty · checked |
Other published facts (2)
Other published facts
| Fact | Published value | Source · checked |
|---|---|---|
| Board types and order codes | Spotted Gum + Rosewood (DCX146SGRW), Ebony + French Oak (DCX146EBFO), American Oak + Tasmanian Oak (DCX146AOTO) How this was readDatasheet V6 order codes: three board types, each carrying two of the six colours (one per face). | Perma Composites datasheet · checked |
| Clip gaps | Mini Gap clip option gives a tighter 1.5 mm board gap; the ProLock clip gap is described only as "consistent" (no millimetre figure). | Perma Composites install guide · checked |
These are the rows for this colour’s board. The full specification, with every profile, is on the PermaTimber 146 CX page.
Every fact here carries its source and the day it was checked. Documents opened 6 Oct 2026.
Prices by state
Set your state once and every price on this site is quoted for it, including GST. Then this page shows the PermaTimber 146 CX prices in your state: each the average of the sellers we track there.
Price on request. No seller we track publishes a PermaTimber 146 CX price anywhere in Australia yet. That means no data, not that it isn’t sold.
It can still be quoted: draw your deck in the free designer and get your free deck pack. Local builders and suppliers quote from it.
Customer reviews
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Documents
The maker’s own documents, linked where they publish them (never re-hosted).
- Installation guidePermaTimber 146 CX Decking Installation Guide v3 (file uploaded Sep 2026)
- DatasheetPermaTimber 146 CX Decking datasheet V6 (9 Jul 2026)
- Installation guidePermaTimber Decking Installation Guide V12 (8 Apr 2025; covers 146, 225 and 295)
- WarrantyPerma Composites consumer warranty (2022 version): 10-year warranty for consumers
All 8 sources behind this page
- 146 CX Decking product page (colours, finishes, technical table)
- PermaTimber 146 CX Decking datasheet V6 (9 Jul 2026)
- PermaTimber range overview (solid decking, retailer list, 10-year warranty claim)
- PermaTimber 146 CX Decking Installation Guide v3 (file uploaded Sep 2026)
- PermaTimber Decking Installation Guide V12 (8 Apr 2025; covers 146, 225 and 295)
- Perma Composites consumer warranty (2022 version): 10-year warranty for consumers
- Warranty support page (links the consumer warranty)
- Perma Composites Pty Ltd Terms and Conditions for supply to project clients (file dated 141124): 7-year product warranty from supply
Facts are taken from the highest-ranked source (certificates and test reports, then install guides and datasheets, then warranties, then web pages); when sources disagree the specification says so, and safety facts take the conservative value. Every plan the designer draws from these figures is a concept plan, not for construction: the span tables behind its framing have been checked by a structural engineer, but a builder, building surveyor or certifier must check the plan before you build.
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Board: 138 × 25 mmCap: CappedFixing: Hidden clips or screws
