GSM Explained: Why It Matters
One of the key factors when comparing tarps is the GSM rating, which stands for grams per square metre. This figure indicates the fabric’s weight and density.
- Lightweight (80–110 GSM) – Suitable for temporary covers, DIY projects, or low-stress environments.
 - Medium Duty (120–160 GSM) – Good for general purpose use, offering a balance between weight and durability.
 - Heavy Duty (200+ GSM) – Designed for demanding applications such as industrial tarpaulins, haulage, and event structures.
 
While a higher GSM often means stronger material, it’s important to match the rating to the job. A large tarpaulin for covering a truck load may require a 610 GSM PVC option, while a smaller garden project might only need a lighter sheet.