Modern Deck Classic Solid in Blackbutt
Modern DeckCompositeSolid core
- Board size
- 140 × 22 mm3.6 m or 5.4 m lengths
- Cap
- Capped all roundA tougher outer shell that resists stains and fading
- Core
- Solid
- Fixing
- Hidden clipsStainless steel connector clips (supplied free with the order)
- Warranty
- 25 years, residential
- Joist centres
- 400 mm maxSources disagree: see the specifications
Nobody has sampled a swatch for Blackbutt yet, so the designer can’t render it and no render colour is shown here.
Other colours of Classic Solid (7)
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 corecap14022
Deck board 140 × 22 mm · 5.4 m, 3.6 m, drawn with solid core, capped on every face
- 14015
Fascia 140 × 15 mm · 5.4 m, drawn with solid core, capped on every face
- 14022
Edge board 140 × 22 mm · 5.4 m, drawn with solid core, capped on every face
The board
| Fact | Published value | Source · checked |
|---|---|---|
| Material | Wood-plastic composite | Allwood Wholesale datasheet · checked |
| Core | Solid | Allwood Wholesale datasheet · checked |
| Cap | Capped all round (360°) | Allwood Wholesale datasheet · checked |
| Deck board | 140 × 22 mm · 5.4 m and 3.6 m lengths How this was readBrochure: 140 x 22 x 5400 mm, plus 140 x 22 x 3600 mm. Lightly embossed 3D woodgrain; boards are two-tone (one colour per face). Edge shape not described (fixed with sliding connector clips). | Allwood Wholesale datasheet · checked |
| Recycled content | 90% How this was readBrochure: "made from 90% recycled materials" ("over 90%" in the feature call-out); wood powder from factory offcuts and recycled plastic from factory and household waste. | Allwood Wholesale datasheet · checked |
Installation
| Fact | Published value | Source · checked |
|---|---|---|
| Max joist centres, residential | 400 mmSources disagree. Allwood Wholesale datasheet says 450 (2026 brochure: Classic Solid residential 450 mm.). The published value comes from the higher-ranked source; safety facts take the conservative one. | Allwood Wholesale install guide · checked |
| Max joist centres, commercial | 350 mm How this was readBrochure: Classic Solid commercial 350 mm (guide: 350 mm for commercial). | Allwood Wholesale datasheet · checked |
| Max joist centres, boards laid diagonally | 350 mm · computed, not quoted | Allwood Wholesale datasheet · checked |
| Gap between boards | 5 mm How this was readInstallation guide fixing specifications: minimum 5 mm between boards (side to side), also to a wall parallel to the boards. | Allwood Wholesale install guide · checked |
| End gap rule | Gap by air temperature and board length: at 10 °C: 4.2 mm for a 2.7 m board, 5.7 mm for a 3.6 m board, 6.5 mm for a 4.2 m board, 7.7 mm for a 4.8 m board, 8.5 mm for a 5.4 m board; at 15 °C: 3.6 mm for a 2.7 m board, 5 mm for a 3.6 m board, 5.8 mm for a 4.2 m board, 6.6 mm for a 4.8 m board, 7.5 mm for a 5.4 m board; at 20 °C: 3.1 mm for a 2.7 m board, 4.3 mm for a 3.6 m board, 5 mm for a 4.2 m board, 5.7 mm for a 4.8 m board, 6.5 mm for a 5.4 m board; at 25 °C: 2.5 mm for a 2.7 m board, 3.5 mm for a 3.6 m board, 4.2 mm for a 4.2 m board, 4.6 mm for a 4.8 m board, 5.4 mm for a 5.4 m board; at 30 °C: 2 mm for a 2.7 m board, 2.8 mm for a 3.6 m board, 3.4 mm for a 4.2 m board, 3.6 mm for a 4.8 m board, 4.2 mm for a 5.4 m board; at 35 °C: 1.5 mm for a 2.7 m board, 2.1 mm for a 3.6 m board, 2.5 mm for a 4.2 m board, 2.6 mm for a 4.8 m board, 3 mm for a 5.4 m board; at 40 °C: 1 mm for a 2.7 m board, 1.5 mm for a 3.6 m board, 1.8 mm for a 4.2 m board, 1.7 mm for a 4.8 m board, 2 mm for a 5.4 m board · End to a wall 10 mm · Around posts 5 mm · Halve the gap when both ends are open: yes How this was readBrochure and installation guide: "correct gap to leave for butt joints" table (halve it if both ends are open with no obstructions); 10 mm where a wall is at the end of the board run; 5 mm around posts. The text also says a 5.4 m board needs a 7 mm space at 20 C, while the table prints 6.5 mm - small internal disagreement. The brochure prints the 40 C / 5.4 m cell as "2.0m" (typo for 2.0 mm). | Allwood Wholesale datasheet · checked |
| Butt joints | Board ends land on a double joist How this was readInstallation guide: install double joists under all butt joints (joists/battens 30 mm apart, boards overhanging 10-15 mm); breaker boards recommended for runs over 5.4 m (breaker board end gap 5 mm). | Allwood Wholesale install guide · checked |
| Minimum clearance under the boards | 300 mm | Allwood Wholesale install guide · checked |
| Subframes | timber and steel How this was readGuide: install only on Modern Deck WPC battens, timber or steel; do not fix to a solid surface such as concrete or tiles; never face-screw into steel frames. | Allwood Wholesale install guide · checked |
| Fixing: hidden clip | Stainless steel connector clips (supplied free with the order) | Allwood Wholesale install guide · checked |
| Fixing: hidden clip | Starter / end clips (supplied) | Allwood Wholesale install guide · checked |
| Fixing: hidden clip | Stainless screws (supplied) | Allwood Wholesale install guide · checked |
| Installation guide | Maker’s guide How this was readNo version or date printed; the shared file link carries a 2021 timestamp. | Allwood Wholesale install guide · checked |
Tested performance
| Fact | Published value | Source · checked |
|---|---|---|
| Slip resistance (AS 4586) | P4 (wet pendulum) How this was readIntertek report 210723004SHF-001 (tested 23 Jul - 2 Aug 2021, issued 2 Aug 2021): "WPC Co-extrusion Modern decking" 140 x 22 mm, Slider 55, wet, class taken from the lowest of three directions = P4. The brochure also says "P4 and R11 anti-slip rated"; no R11 (oil-wet ramp) report was found. The sample was not tied to a colour or to Classic Solid by name. | Intertek slip test report · checked |
Warranty
| Fact | Published value | Source · checked |
|---|---|---|
| Warranty, residential | 25 years How this was readWarranty document and brochure: 25 years residential on the Classic Solid co-extrusion board (breakage, fungal decay, insect damage, rotting or splintering); not transferable; claims need proof of purchase and photos. | Allwood Wholesale warranty · checked |
| Warranty, commercial | 15 years How this was readWarranty document and brochure: 15 years commercial. | Allwood Wholesale warranty · checked |
| Fade and stain warranty | No cover stated How this was readNo fade or stain cover is listed (cover is breakage, fungal decay, insect damage, rotting or splintering) and clause 2.4.4 excludes colour variation. The brochure still describes "superior fade resistance" and "superior stain resistance". | Allwood Wholesale warranty · checked |
Other published facts (5)
Other published facts
| Fact | Published value | Source · checked |
|---|---|---|
| Slip resistance, other methods (as published) | Slider (deck 140 × 22 mm) 55 · SRV by direction: 0° 41; 45° 45; 90° 44 How this was readIntertek report 210723004SHF-001 (tested 23 Jul - 2 Aug 2021, issued 2 Aug 2021): "WPC Co-extrusion Modern decking" 140 x 22 mm, Slider 55, wet, class taken from the lowest of three directions = P4. The brochure also says "P4 and R11 anti-slip rated"; no R11 (oil-wet ramp) report was found. The sample was not tied to a colour or to Classic Solid by name. | Intertek slip test report · checked |
| Fixing notes (as published) | adhesive: (Soudal T-Rex adhesive where starter clips cannot be used (starter and breaker boards)) How this was readBrochure: "free stainless steel connector clips, starter/end clips + screws". Installation guide: clips slide into the neighbouring board and are screwed to the joist; face-fix trimmed end boards 25 mm in from the edge, pre-drilled, at most 450 mm apart. | Allwood Wholesale install guide · checked |
| Acclimatisation and movement | Acclimatise boards on site for 48 hours; boards move up to 1-1.5% of length; fix early in the morning on hot days. | Allwood Wholesale install guide · checked |
| Stairs and face fixing | Maximum joist spacing for stair stringers 300 mm; minimum 25 mm from the board edge for face fixing. | Allwood Wholesale datasheet · checked |
| Static electricity | Static build-up can occur; the guide suggests earthing the subframe or using a static mat. | Allwood Wholesale install guide · checked |
These are the rows for this colour’s board. The full specification, with every profile, is on the Modern Deck Classic Solid 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 Modern Deck Classic Solid prices in your state: each the average of the sellers we track there.
Price on request. No seller we track publishes a Modern Deck Classic Solid 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 guideModern Deck Installation Guide (PDF; no version printed)
- DatasheetModern Deck 2026 brochure (sizes, colours, warranty summary, fixing specifications, butt-join gap table)
- WarrantyModern Deck Manufacturers Warranties and Liability (PDF)
- Slip test reportIntertek (Shanghai) test report 210723004SHF-001, AS 4586-2013 App. A wet pendulum, "WPC Co-extrusion Modern decking" 140 x 22 mm, applicant Allwood Wholesale Pty Ltd (issued 2 Aug 2021)
All 5 sources behind this page
- Modern Deck 2026 brochure (sizes, colours, warranty summary, fixing specifications, butt-join gap table)
- Modern Deck Installation Guide (PDF; no version printed)
- Abbey Timber - Modern Deck WPC composite decking collection (retailer listing: Classic Solid and Eco Hollow, all marked Sold Out on 2026-10-06; availability and status only)
- Modern Deck Manufacturers Warranties and Liability (PDF)
- Intertek (Shanghai) test report 210723004SHF-001, AS 4586-2013 App. A wet pendulum, "WPC Co-extrusion Modern decking" 140 x 22 mm, applicant Allwood Wholesale Pty Ltd (issued 2 Aug 2021)
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.
Similar boards
Other Modern Deck ranges, and boards of the same material in similar colours.
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