WPC Decking Profiles and Models — Sections, Weights and What Each One Is For

Six Models, Photographed on Real Jobs

Each of these is a photograph of that exact model on a real installation, taken from our own catalogue. Metre weight and construction come from the production schedule. The catalogue's own captions — model number and colour printed on the image — are reproduced in full further down the page.

ZSGJ138H23A — Teak

Hollow · 138 × 23 mm · 2.85 kg/m

Capped co-extrusion. Woodgrain one face, brushed the other. This is the profile our slip test was run on.

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ZSGJ138H23A — Antique

Hollow · 138 × 23 mm · 2.85 kg/m

The same section in a different colour, so you can see exactly what the colour choice changes.

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ZSGJ138H23C — IPE

Hollow · 138 × 23 mm · 2.75 kg/m

Same footprint as the 23A, lighter by 100 g a metre — which is 100 kg across a 1,000 m order.

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ZS150H23 — Teak

Hollow · 150 × 23 mm · 2.75 kg/m

3D embossed. The widest of the six — fewer boards and fewer clips per square metre.

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ZS140H25B — Teak

Hollow · 140 × 25 mm · 2.89 kg/m

3D embossed, two millimetres thicker than the 23 mm boards. The full photograph below shows it laid beside a grey run.

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ZS140S23B — Red Wood

SOLID · 140 × 23 mm · 3.90 kg/m

Solid core. Note the weight: 3.90 against 2.89 for a hollow board of almost the same size. That difference is what a container quote turns on.

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The Catalogue Pages These Came From

We have reproduced three of them at full size with the captions intact, because a photograph with the model number printed on it by the manufacturer is worth more than the same photograph with our word for it. Ask and we will send the catalogue spread itself.

ZSGJ138H23A in Teak

ZSGJ138H23A in Antique — the same section, a different colour

Worth comparing against the Teak above. Identical profile, identical weight, identical fixing — the colour is the only variable. It changes how the terrace looks and how hot the surface gets in the sun, and it leaves everything structural exactly where it was.

ZS140S23B in Red Wood — the solid board

This is the one to look at if you are pricing a container. 3.90 kg/m against 2.89 for the hollow board next to it in the schedule — same width, 2 mm thinner, and 35 per cent heavier. Solid boards are specified for commercial traffic and exposed edges, and the weight is what pays for that.

How to Read One of Our Model Numbers

Once you know the pattern you can read most of the schedule without asking us. We checked this against all 77 deck profiles before writing it down.

Prefix, width, construction, thickness

Take ZSGJ138H23A. ZSGJ is the capped co-extrusion generation; ZS on its own is the earlier generation, which covers both the classic and the 3D embossed ranges. 138 is the board width in millimetres. H means hollow; S means solid. 23 is the thickness in millimetres. The trailing letter separates variants of the same size — A, B, C and so on.

The hollow / solid letter is reliable

We checked it across the whole schedule: all 42 hollow deck profiles carry H, and 34 of the 35 solid profiles carry S. The one that goes its own way is ZSGJ138Y20, which uses Y — worth knowing before you read too much into a letter. So if you see an S in the middle of a model number, expect a solid board and expect the weight to reflect it.

Why the weight matters more than the name

Across the deck schedule the metre weight runs from 2.00 kg/m to 7.27 kg/m — nearly four to one. Hollow boards sit between 2.00 and 3.95; solid boards between 2.86 and 7.27. A container quantity is built on the metre weight, so it is built on the model. Give us the model and the volume and we work it out properly.

The Sections, Drawn to Dimension

Straight from our catalogue. Ask for the drawing of any profile in the schedule and we will send that one; these two sheets are the ones people ask for most.

Capped co-extrusion range

ZSGJ138H23A and ZSGJ138H23C at 138 × 23 mm, ZSGJ138H25 at 138 × 25, ZSGJ140S23 at 140 × 23, ZSGJ140S25 at 140 × 25, ZSGJ145S30 at 145 × 30. The capped generation runs round chambers — better compressive behaviour for the same wall thickness, and they clear water rather than hold it.

Classic uncapped range

ZS100H25 at 100 × 25 mm, ZS140H25A and ZS140H25B1 at 140 × 25, ZS140S23B at 140 × 23 solid, ZS145H30 at 145 × 30, ZS100S30F at 100 × 30 solid. Square cells here rather than round chambers — the visible difference between the generations when you look at a sawn end.

The Six Models, Side by Side

Everything on this table comes from our own production schedule. Metre weight is what a container quote is built on, so it is the column worth reading twice.

What Else Is in the Schedule

Decking is the biggest part of it but not all of it. These counts are from the production schedule rather than a marketing page, which is why they are odd numbers rather than round ones.

Deck boards

42 hollow and 35 solid deck profiles, from 100 mm to 150 mm wide and 20 mm to 40 mm thick. Within that there are seamless boards, deep-section boards and boards cut specifically for particular export markets.

Everything that goes round the deck

11 cladding boards, 7 wall-hung boards, 7 fence boards, 9 posts, 4 joists, 4 bench slats, 4 edge trims, plus balustrade sections, decorative strips, handrails, pergola blades and roof tiles. If you are putting a whole scheme together rather than buying boards, say so and we will quote it as one programme.

And why that matters commercially

We own the dies and cut new sections in-house, which is why the schedule runs to this length rather than to one catalogue page. A market-specific profile is a conversation — tell us the section you need and the volume behind it.

Surface Textures — Two Different Code Sets

A detail that trips people up: the capped range and the classic range use different texture codes. Quote the code together with the range and there is no ambiguity.

Capped co-extrusion: H codes

H1 straight grain, and H2, H3 and H5 wood grain.

Classic range: G codes and mechanical finishes

G2 straight wood grain, G3 cross wood grain, plus brushing and sanding as mechanical finishes. Each set belongs to its own range, so give us the range and the code together.

Colours — Three Ranges, Six Each

Colour and texture are specified separately from the profile, so a complete specification is three things: model, texture code, colour.

The full colour card

Capped co-extrusion: Teak, Antique, Redwood, IPE, Light-grey, Walnut.
Classic uncapped: Teak, Redwood, Walnut, Coffee, Chocolate, Ebony.
3D embossing: Teak, Red Wood, Walnut, Chocolate, Light Grey, Dark Grey.

Two things worth knowing about the card

Grey lives in two of the three ranges — Antique and Light-grey in the capped co-extrusion range, Light Grey and Dark Grey in the 3D embossing range — so a grey brief points you at one of those two grades from the start. And a colour name belongs to its range: the Walnut in the capped range and the Walnut in the classic range are each their own colour, so quote the range with the colour. Ask for physical samples of your shortlist before committing a job; they are free and the courier is credited against your first order.

Ask for a Specific Profile Drawing

Every profile in the schedule has a dimensioned section. Tell us the model — or describe the board if you have it in front of you rather than on paper — and we will send that drawing with a per-unit price inside 24 hours.

Profile and price enquiry

Questions About the Schedule