Hemp Rope & Cordage: The Sustainable Guide to Natural Strength
Synthetic rope is everywhere — garden centres, camping shops, hardware stores. But synthetic cordage is petroleum-based, takes centuries to decompose, and lacks the aesthetic and functional properties of natural fibres. Hemp rope is the answer that has been forgotten for decades and is now making a comeback.
Why Hemp Rope Outperforms Synthetic Alternatives
Breaking Strength and Load Capacity
Hemp rope has exceptional tensile strength — a 16mm (5/8 inch) hemp rope can support approximately 4,000 kg (40 kN) breaking load, equivalent to premium synthetic cordage. However, hemp maintains this strength longer and doesn't degrade under UV exposure the way polypropylene does.
UV and Weather Resistance
Synthetic rope weakens significantly after 12–24 months of outdoor exposure. Hemp, when properly sealed with a natural oil finish (tung oil or linseed oil), develops a protective patina and can last 5–10 years in active outdoor use. Unlike synthetic rope, which becomes brittle and splinters, hemp remains flexible even after years of weather exposure.
Grip and Handling
Hemp has a naturally rough texture that provides superior grip without the hand-blistering feel of smooth synthetic rope. This matters for boat lines, climbing, and any application requiring secure handling.
Biodegradability
Hemp rope fully biodegrades within 5–7 years when exposed to soil and moisture. This is essential for applications where rope is left in the environment (erosion control, marine applications, restoration work). Synthetic rope will persist for 500+ years.
Common Hemp Rope Uses
Garden Climbing Frames
Peas, beans, and climbing roses. Hemp rope is softer on delicate plant stems than synthetic alternatives.
Boat and Marine
Traditional and preferred for sailing vessels, mooring, and rigging. Naturally absorbs moisture without rotting.
Tree Work and Arboriculture
Rigging and securing branches. Less likely to damage bark than synthetic cordage.
Camping and Survival
Tent guy-lines, tarps, and emergency cordage. Hemp is lighter than synthetic alternatives of equivalent strength.
Restoration and Erosion Control
Biodegradable netting and erosion mats. Hemp doesn't leave plastic residue in the landscape.
Craft and Aesthetic
Macramé, knitting, bundling, and decorative applications. Hemp takes dye beautifully.
Types of Hemp Cordage Available
| Type | Diameter Range | Best For | Price per Metre |
|---|---|---|---|
| Twisted Rope | 6–50mm | General purpose, durability | £0.20–£1.50 |
| Braided Rope | 6–32mm | Flexibility, sailing | £0.30–£2.00 |
| Jute Cord | 3–12mm | Light duty, crafts | £0.10–£0.60 |
| Hemp Twine | 1–3mm | Bundling, decorative | £0.05–£0.20 |
Care and Maintenance
Hemp rope benefits from light maintenance. Store in a dry location. Before first use, treat with linseed oil or tung oil to enhance UV resistance and water repellency. Avoid storing in direct sunlight for extended periods. With basic care, hemp rope outlasts most synthetic alternatives by years.
Sourcing Hemp Rope in the UK
Specialist rope suppliers, sailing chandlers, and craft suppliers stock hemp cordage. Online availability through Amazon, eBay, and specialist cordage retailers. Prices are competitive with synthetic rope when you factor in durability and longevity.
Verdict: Hemp rope is stronger, lasts longer, handles better, and leaves no environmental footprint. For anyone serious about sustainable outdoor living, hemp cordage should be the default choice, not the alternative.