Bulk Buying Guide for Polyhouse Builders and Contractors
If you build polyhouses, net houses or nurseries for clients, accessories are a small line on the estimate but a big source of delays. Running short of pins or clips halfway through a site visit costs a day. Over-ordering ties up cash. This guide is for polyhouse builders, contractors and farm project managers buying polyhouse accessories wholesale: what each project needs, how to estimate quantities, pack sizes, and how to order so the job finishes on time.
Quick answer: For a typical 1,000 sq m polyhouse with full floor cover, plan on about 7 rolls of 1.5 m weed mat, 1,400 pins, 900 drip stakes and 720 shade net clips. Estimate per structure, keep 5 to 10% spare and order before the season peak.
Who this guide is for: polyhouse and net house builders, agricultural contractors, turnkey project companies, large nurseries, FPOs and dealers buying accessories in bulk.
Key facts at a glance:
- Weed mat 1.5 m × 100 m: covers 150 sq m per roll
- Weed mat nails and galvanized U-pins: packs of 100 to 1000
- 16 mm drip pipe holder stakes: packs of 100 to 1000
- Shade net clips and plant support clips: packs of 100 to 1000
- Clips, pins, stakes and grow bags: packs of 100, 200, 500 and 1000
Who this guide is for
- Polyhouse and net house builders and fabricators.
- Agricultural contractors and turnkey project companies.
- Large nurseries and FPOs equipping several structures.
- Dealers stocking accessories for local growers.
The accessories every project needs
| Product | Job on site | Packs |
|---|---|---|
| Weed mat 1.5 m × 100 m | Floor and aisle ground cover | Per roll |
| Weed mat 1 m / 0.6 m | Beds, aisles, paths | Per roll |
| 6 inch and 7 inch weed mat nails | Pinning mat edges and joins | 100 / 200 / 500 / 1000 |
| Galvanized U-pins | Joins and pinning over 16 mm drip pipe | 100 / 200 / 500 / 1000 |
| 16 mm drip pipe holder stakes | Holding laterals straight in beds | 100 / 200 / 500 / 1000 |
| Shade net clips | Insect net side curtains, internal shade net, film repairs | 100 / 200 / 500 / 1000 |
| Plant support clips | Training tomato, capsicum, cucumber on strings | 100 / 200 / 500 / 1000 |
| HDPE grow bags 20 × 20 × 35 cm | Nursery and soilless growing | 100 / 200 / 500 / 1000 |
For clip, pin, stake and bag products, you can mix pack sizes to match your count exactly. For larger volumes, request a project quote.
Estimating quantities: worked example
Here is a 1,000 sq m polyhouse (25 m × 40 m) with full floor cover, 16 beds, two laterals per bed and insect net side curtains. Quantities are estimates; adjust for your layout.
| Item | Basis | Quantity |
|---|---|---|
| Weed mat 1.5 m × 100 m | 1,000 sq m ÷ 150 sq m per roll | 7 rolls |
| Nails or U-pins | Joins every 50 cm, edges every 1 m | about 1,400 |
| 16 mm drip stakes | 1,280 m of lateral at 1.5 m, plus ends | about 900 |
| Shade net clips | Top and bottom of 130 m of side curtain at 40 cm, plus 10% | about 720 |
Add plant support clips at about 8 per plant for 2 m crops on strings. A 4,000 sq m (roughly 1 acre) house needs about four times the mat, pins and stakes, and clips in proportion to the length of curtain you fix.
For the full floor setup method, see our polyhouse floor setup guide.
Quick estimating formulas
- Weed mat rolls: area to cover (sq m) ÷ 150 for 1.5 m rolls. Add a little for overlaps.
- Mat pins: edges at 1 pin per 1 to 1.5 m, joins at 1 pin per 30 to 50 cm.
- Drip stakes: total lateral length ÷ 1.5 m, plus one per end and bend.
- Net clips: length of every pipe or wire the net is fixed to × 100 ÷ spacing in cm (30 to 50), plus 10%. See the shade net clip quantity guide.
- Plant clips: plants × (final height in cm ÷ 25).
Ordering tips for contractors
- Estimate per structure, then combine. List quantities for each house, then order across the whole project.
- Keep 5 to 10% spare on pins, stakes and clips for windward walls, corners and repairs.
- Order before the season peak. Builders get busy before planting seasons and monsoon; order early so materials are on site when the frame is ready.
- Match pins to soil. 7 inch nails or U-pins for sandy or windy sites; 6 inch nails for firm soil. See nails vs U-pins.
- Confirm pipe sizes. Our drip stakes and U-pins are made for 16 mm laterals.
- Ask about invoicing and dispatch when you request your quote, so paperwork matches your project needs.
Why standard parts save time
Using the same mat, pins, stakes and clips on every structure means your crews learn one method, spares are interchangeable between sites, and estimating gets faster with each job. Clips, pins and stakes are reusable, so clients can relay them when nets or mats are replaced.
Related guides
Read how to choose the right weed mat, which roll width to buy and how to stop drip lines shifting.
Sources and further reading
- MIDH Operational Guidelines, April 2025: Government of India guidelines covering greenhouses, shade net houses, plastic mulching and BIS conformity of materials
- National Horticulture Board: schemes and information for commercial horticulture and protected cultivation in India
Frequently asked questions
Do you supply polyhouse accessories in bulk?
Yes. Clips, pins, stakes and grow bags come in packs of up to 1000, weed mat comes in 5 m to 100 m rolls, and we quote larger project quantities for builders and contractors.
How much weed mat for a 1,000 sq m polyhouse?
About 7 rolls of 1.5 m × 100 m for full floor cover, plus pins for edges and joins.
How many shade net clips for polyhouse side curtains?
Measure the length of pipe or wire the curtain is fixed to, top and bottom, multiply by 100 and divide by your spacing in cm, then add 10%. About 720 for 130 m of curtain at 40 cm.
What drip pipe size do your stakes fit?
Our drip pipe holder stakes and galvanized U-pins are made for 16 mm outside-diameter lateral pipe.
How do I get a project quote?
Contact us with your structure sizes and layout, and we will suggest quantities across mat, pins, stakes and clips.
