12.99 m Super-Wide Shade Cloth — Seamless HDPE Panels

Super-wide shade cloth

12.99 m from the loom, not 6 m plus a seam

Most shade cloth in the world is knitted 4–6 m wide, because that is the width of a standard Raschel machine. Cover a 12 m tunnel with it and you are sewing three drops together, adding two seams, two rows of overlap and two extra fixing lines that nobody asked for.

Our widest loom knits 12.99 m in a single piece. It is the same HDPE, the same shade factor and the same finishing line as our standard rolls — the only difference is that the panel arrives as one sheet, so the weakest points in the installation disappear.

That width exists because we build our own looms. Since 1999 we have widened, retuned and rebuilt the machines in our own workshop, so the maximum width is set by our engineering, not by what a machinery supplier is willing to sell.

Super-wide cloth is normally specified for 10–12 m greenhouse tunnels, poultry and livestock houses, orchard rows, car parks, construction screens and large shade structures — anywhere the span is wider than a standard roll and the buyer is tired of seams.

Specification	Details
Maximum width	12.99 m in one piece — seamless
Standard range	1 m – 12.99 m, slit to your exact width
Wider than 12.99 m	Joined with double-stitched lap seam, 30 cm overlap
Weight	55 / 65 / 80 / 150 / 180 / 200 / 250 / 300 g/m²
Shade factor	30% / 40% / 50% / 70% / 75% / 80% / 90% / 95%
Roll length	25 m / 50 m, or wound to your handling length
Packing for 12.99 m	Folded bale 3–3.5 m for forklift loading
Width tolerance	±1–2 cm on 4 m rolls · quoted per order above 6 m
Edge options	Raw, hemmed, eyelets @50 cm, rope border
UV package	HALS + UV stabiliser, 3–10 year service life
MOQ	500 m² per colour (stock) · 3,000 m² (custom)
Lead time	7–12 days stock · 18–25 days custom

The arithmetic

Covering a 12 m × 20 m tunnel: how many seams do you want to sew?

Same structure, same shade factor, four different roll widths. The only numbers that change are the seams, the fixing lines and the labour.

Cloth width	Drops needed	Seams to sew	Fixing lines	Cloth bought
3 m (10 ft)	4	3 seams	5 lines	12 m + 3 × 0.3 m overlap = 12.9 m
4 m	3	2 seams	4 lines	12 m + 2 × 0.3 m overlap = 12.6 m
6 m	2	1 centre seam	3 lines	12 m + 0.3 m overlap = 12.3 m
12.99 m	1	none	2 lines (both eaves)	12 m, no overlap

Why seams fail first. A seam is a line of needle holes through a UV-stabilised fabric, backed by a thread that ages faster than the cloth. It is also a 30 cm overlap where two panels move independently in wind. In service, the centre seam of a wide tunnel cover is usually the first place to open, and the first thing a customer complains about. Remove the seam and you remove the failure mode.

Where it goes

Six structures that are wider than a standard roll

10–12 m tunnels

A 12 m span covered in one drop from eave to eave, with the fixing line only at the gutters — the classic case for super-wide cloth.

Poultry & livestock houses

Wide roofs and side curtains in one piece, so the net cannot flap open at a seam during a storm.

Orchard rows

Rows 10 m apart covered as a single sheet, with no centre seam catching on branches or machinery.

Car parks & yards

Long spans between steel posts, where a seamless panel looks better and needs fewer cables.

Construction screens

Dust and debris screening across a site boundary, eyeleted along both edges for quick tensioning.

Event & patio structures

Large sail-like covers and pergola runs where a visible seam ruins the finish.

Wide shade netting covering a greenhouse tunnel in a single seamless panel

10 m tunnel, one drop

Wide agricultural shade netting over a multi-span greenhouse structure

Wide-span agriculture

Green HDPE shade cloth rolls knitted on the loom up to 12.99 m wide

Off the wide loom

Installation

Tensioning a 13 m span so it stays flat

A wide panel behaves differently from a narrow one: the middle of the span carries more slack, and the tension you put on the edge decides whether the sheet flutters or sits still in wind.

Slack allowance: 3–5% across the width, so the cloth can expand in heat without pulling the eyelets.
Top support: cable or steel pipe through the edge sleeve, posts every 5–6 m, tensioned with turnbuckles.
Even tension: pull both eaves progressively rather than one side to full tension, or the panel walks off square.
Ground clearance: 10–15 cm so the bottom edge does not sit in wet grass or mud.
Heat-set matters: a wide panel that was not heat-set after knitting drifts, sags unevenly and never hangs straight.

What we ship with it

Every super-wide order can leave Shanghai as a complete kit: cloth cut to width, eyelets at 50 cm, rope border or taped hem, plus cable, turnbuckles, clips and posts quoted on the same packing list.

Loading note. A 12.99 m panel folded to a 3–3.5 m bale loads like a pallet and needs no special handling at destination. Tell us whether your warehouse unloads with a forklift, a crane or by hand, and we pack to that method.

Ask for a super-wide quote →

FAQ

Super-wide shade cloth questions

Is the 12.99 m width really woven in one piece, or sewn together?

Woven in one piece on our widest Raschel loom — one warp beam, one take-up, no stitching anywhere across the panel. Any mill can sew two 6 m panels together and call it 12 m; ask for the loom sheet and the width before finishing. Ours is 12.99 m off the machine, then heat-set so the mesh stays square.

How is a 12.99 m wide panel packed and shipped?

Normally as a folded bale, 3–3.5 m long, which loads with a forklift and fits any 20 ft or 40 ft container. If you prefer rolls we wind to your handling length — the limit is your doorway, not our loom. Tell us the unloading method at your warehouse and we pack to suit.

Will a super-wide panel sag in the middle?

Any 12 m span needs slack allowance and a properly tensioned support line. We quote 3–5% slack across the width, a cable or pipe at the top edge with posts every 5–6 m, and eyelets at 50 cm centres. Heat-set cloth holds its shape better than unset cloth, which is why the wide panels we ship do not drift out of square.

Can I order 12.99 m width in 30% or 40% shade?

Yes. Width and shade factor are independent settings at the loom — 30%, 40%, 50%, 70%, 75%, 80%, 90% and 95% are all available in the full width range, in black, green, white, grey or a Pantone-matched colour.

What if I need wider than 12.99 m?

Then we join panels with a double-stitched lap seam and a 30 cm overlap, or supply two panels for you to overlap on site. For spans above about 16 m we usually recommend two drops with a centre fixing line anyway, because a single 20 m sheet is hard to tension and hard to handle in wind.

What is the MOQ and lead time for super-wide cloth?

500 m² per colour for stock specifications, 3,000 m² for a custom width or colour. Stock colours ship in 7–12 days; custom runs take 18–25 days plus 3–5 days for finishing. Samples of the exact width can be cut from the first metre of the run.

12.99 m shade cloth in one piece — no centre seam