IFRC Tarpaulin Standard Explained: The Unified Plastic Sheeting Spec, Line by Line
If you have ever bought a tarpaulin off Alibaba and tried to use it as emergency shelter, you have learned, expensively, that "tarpaulin" is not a specification. The IFRC, ICRC, and IOM agreed on a single document around 2011 to fix exactly this problem: a unified plastic sheeting standard that any humanitarian agency can quote in a tender and any qualified manufacturer can produce against. This guide walks through that standard line by line, explains where bidders most often deviate, and shows what a procurement officer should ask to see before signing a PO. It is the reference for anyone evaluating tarpaulin offers for shelter response, school tents, clinic annexes, or post-disaster roof-patch programs.
Why a unified standard exists
Before the unified spec, every agency wrote its own tarpaulin tender. UNHCR used one weight, IFRC another, IOM a third. Manufacturers ran short batches that would clear one agency's lab but not the next, and consolidated airlifts were impossible because the goods did not stack. After the 2010 Haiti earthquake response exposed how badly this fragmented logistics, the three biggest non-UNHCR shelter agencies sat down and harmonized. UNHCR adopted the same standard for non-tent shelter materials shortly after. The result is what most factories now call simply "the IFRC tarpaulin," even though three agencies own it.
The standard is publicly available through the global shelter cluster and is referenced in IFRC, ICRC, IOM, UNHCR, and OXFAM tender documents. The technical content has not changed substantially since the last revision; the document is stable and procurement officers can quote it without worrying about version drift.
The base specification: a 4m by 6m woven-and-laminated tarpaulin
The default unit is one tarpaulin, 4 meters by 6 meters, laid out as 24 square meters of finished sheet. The construction is woven polyethylene fabric with polyethylene laminated to both faces; the woven core gives tensile strength, the laminate gives waterproofing. This sandwich construction is what separates a humanitarian tarpaulin from a single-layer LDPE sheet that you would tear open by hand.
| Property | IFRC requirement |
|---|---|
| Finished size | 4m × 6m (other sizes by agreement) |
| Body weight | 187–231 g/m² (target 200 g/m²) |
| Reinforcement band weight | 150–200 g/m² |
| Tensile strength (warp/weft) | ≥500N at 15–25% elongation per ISO 1421-1 |
| Visible color | White both sides, grey on bands |
| Opacity | Black inner fibres, full opacity required |
| Eyelets | Aluminium, every 100 cm along all four edges |
| Edge reinforcement | Heat-welded reinforced bands, all four edges |
| Fire retardancy | EN 13823+A1 minimum class D-s2-d2 |
| UV stability | Minimum 18 months tropical exposure |
The 200 g/m² target weight is the load-bearing line. Below 187 g/m² and the sheet will not survive a monsoon. Above 231 g/m² and it gets heavy enough to become an airfreight cost problem. Manufacturers running thinner stock and printing 200 g/m² on the bale is the single most common compliance failure. A field weigh-in with a calibrated scale catches this in two minutes.
Tensile strength: 500N at 15-25 percent elongation
Tensile strength under ISO 1421-1 is a destructive test. A strip of fabric is clamped at both ends and pulled until it tears. The tarpaulin must hold at least 500 newtons of force in both warp (long direction) and weft (cross direction), and at the moment it reaches 500N, the strip should have stretched between 15 and 25 percent of its original length. Both numbers matter.
If the elongation is below 15 percent, the fabric is too brittle: it will hold load briefly then snap, and once snapped it tears the rest of the way through fast. If above 25 percent, the fabric is too stretchy: it will not hold its shape under wind, will bag and flap, and will fail at the eyelet rather than across the body. The 15-25 percent window is the sweet spot for shelter use. A bid that quotes 500N tensile but does not specify elongation should be rejected on principle.
Opacity and color: why the white-over-black sandwich
The standard requires white on both visible faces, grey on the reinforcement bands, and black in the woven inner core. Each color earns its place:
- White outer faces: reflect solar radiation, keep the interior 8 to 14 degrees Celsius cooler in tropical sun than a dark tarpaulin. This matters when families live under it for months.
- Grey reinforcement bands: visually mark the load-bearing edges so field staff can orient the sheet correctly during pitching.
- Black inner core: blocks UV penetration through the sheet. Without the black core, sunlight passes through, degrades the lamination from the inside out, and exposes occupants to UV.
The opacity test is straightforward. Hold a sample up to a 100-watt bulb at 30 cm distance. If you can see the bulb filament through the sheet, it has failed. A compliant tarpaulin will read as fully opaque under that test. Several procurement officers I have worked with bring a small flashlight to factory acceptance visits and run this check on randomly selected bales.
Fire retardancy: where the standard met EN 13823
Fire retardancy is the part of the spec that has tightened most in recent revisions. The historical reference was a self-extinguishing pass/fail test (samples held to a flame, withdrawn, and timed for self-extinguish). The current reference is EN 13823+A1, the European single-burning-item test, with a minimum classification of D-s2-d2. This is a continuous-burn classification with three letter codes: the main letter (A through F) describes flame spread and heat release, the s-code (s1-s3) describes smoke production, and the d-code (d0-d2) describes burning droplets.
Class D-s2-d2 means: limited contribution to fire growth, moderate smoke production, droplet/particle production tolerated. For a humanitarian tarpaulin used in a camp where cooking fires are common, this is the floor. Some agencies are now specifying class C-s2-d2 for school-tent annexes where children are present; if you see a tender requiring Class C, it is genuine, not gold-plating.
Reinforcement, eyelets, and the parts that fail in the field
The standard specifies aluminium eyelets every 100 cm along all four edges, set in heat-welded reinforcement bands. Steel eyelets are not allowed because they rust in tropical conditions and stain the fabric. The eyelet-to-body bond is the single most common field-failure mode: an under-spec'd factory will set the eyelet directly into the sheet without proper band reinforcement, and the eyelet will tear out under wind load within weeks.
What you should look for during inspection:
- Eyelet sits inside a heat-welded reinforcement band of at least 5 cm width
- Band is grey (per spec), not the same white as the body
- Aluminium, not steel, not brass
- Spacing is 100 cm consistent along all four edges
- Corner reinforcement is double-thickness (band overlapping itself)
A bid that ships with steel eyelets, missing reinforcement bands, or inconsistent spacing has failed the standard whether or not the body weight passes its lab test. These small-component failures account for around a third of returned tarpaulin shipments in IFRC stockpile audits.
What BNC supplies against this spec
BNC manufactures plastic sheeting on dedicated extrusion and lamination lines at the Karachi factory. Our standard tarpaulin runs the IFRC base spec: 4m × 6m, 200 g/m² body weight (within the 187–231 tolerance band), 175 g/m² grey reinforcement bands, ISO 1421-1 tensile testing per batch via SGS Karachi, EN 13823+A1 D-s2-d2 fire-retardancy verification, white-over-black opacity, aluminium eyelets every 100 cm. We carry ready stock at 4m × 6m for emergency airlift; custom sizes (4m × 5m, 5m × 7m, 6m × 8m, plus roll stock) ship at minimum 500-unit MOQ with 7 to 14 working days production lead time.
The full product specification, including SGS report templates and INCOTERMS, is on the tarpaulins product page. For broader procurement context including payment terms, lead times, and packaging-strength evidence, see the procurement FAQ. Past tarpaulin deployments include Pakistan floods 2010 and 2022, Türkiye-Syria 2023, Yemen response operations, and Afghan refugee response logistics. Full client list on the factory page.
Frequently asked questions
What is the IFRC tarpaulin standard?
The IFRC/ICRC/IOM Unified Plastic Sheeting Specification: a 4m × 6m woven-and-laminated polyethylene tarpaulin weighing 187 to 231 g/m² (target 200 g/m²), with a minimum tensile strength of 500N at 15 to 25 percent elongation per ISO 1421-1. White sun-reflective coating both sides, grey reinforcement bands, black inner fibres for opacity, fire retardancy class EN 13823+A1 D-s2-d2, aluminium eyelets every 100 cm.
Why 4m × 6m and not other sizes?
The 4m × 6m dimension covers a typical family shelter footprint with overlap for staking, lashes onto a standard 4m × 5m relief tent as a fly sheet, palletizes cleanly, and fits standard humanitarian airlift container dimensions. Smaller 4m × 5m exists for stockpile, larger 5m × 7m or 6m × 8m for school annexes, but 4m × 6m is the procurement default.
Is IFRC tarpaulin the same as a hardware-store tarp?
No. A typical hardware-store polyethylene tarp weighs 80 to 120 g/m², has no certified tensile strength, no fire-retardant treatment, and no opacity guarantee. The IFRC tarpaulin runs at 200 g/m² with 500N tensile, EN 13823 fire classification, and full white-over-black opacity. The hardware tarp lasts a season; the IFRC tarpaulin survives 18 to 24 months of tropical exposure.
Difference between IFRC and UNHCR tarpaulin specs?
There is no separate UNHCR tarpaulin spec. UNHCR adopted the IFRC/ICRC/IOM unified standard for non-tent shelter materials. The same tarpaulin clears all three procurement channels. Sourcing routes differ: UNHCR procures through SMS Budapest/Copenhagen, IFRC through national society stockpiles, IOM through field-level logistics in operational countries.
What testing should accompany a shipment?
At minimum: a third-party tensile and elongation report per ISO 1421-1 (warp and weft), a weight verification per ISO 3801, a fire-retardancy classification report per EN 13823+A1, and a visual inspection report covering opacity, eyelet placement, edge reinforcement, and dimensional accuracy. SGS, Bureau Veritas, and Intertek are the labs IFRC most often accepts. Reports must be batch-traceable.
How does BNC manufacture to this standard?
Dedicated extrusion and lamination lines at the Karachi factory run the 4m × 6m base size at 200 g/m² body weight with grey 175 g/m² reinforcement bands, ISO 1421-1 tensile testing per batch via SGS Karachi, EN 13823 fire-retardancy verification, and aluminium eyelets at 100 cm spacing. Custom sizes ship at minimum 500-unit MOQ; standard 4m × 6m ships from ready stock.
How fast can IFRC-spec tarpaulins ship in an emergency?
Ready stock loads to truck within 24 hours of confirmed PO and reaches a destination airport within 48 to 72 hours through DHL Aviation, Saudia Cargo, or Turkish Cargo. Container loading runs 5 to 7 working days. The 24/72-hour window covers Türkiye-Syria 2023, Pakistan floods 2022, and Yemen response logistics.