What is tarps GSM and How to Measure It?
GSM stands for Grams per Square Meter and is a unit of measurement used to describe the weight and thickness of a material, in this case, tarps. GSM indicates the density of the tarp fabric, with higher GSM values representing thicker, heavier, and typically more durable tarps. Lower GSM values correspond to lighter, thinner tarps. Knowing the GSM of a tarp helps in selecting the right tarp for different applications based on the strength and durability needed.
What GSM Means for Tarps?
Lower GSM (100-200 GSM): These tarps are lighter and more flexible. They are often used for lighter-duty applications, such as temporary covers, camping, or protecting items from light rain.
Medium GSM (200-350 GSM): These are medium-duty tarps and are suitable for general purposes, including construction sites, gardening, and short-term outdoor storage.
Higher GSM (350-700 GSM and above): These are heavy-duty tarps that provide superior durability and protection. They are used for industrial purposes, long-term outdoor exposure, transportation, and covering large or sensitive items like machinery, lumber, or vehicles.
How to Measure the GSM of a Tarp?
To calculate the GSM of a tarp, follow these steps:
- Weigh a Known Area of the Tarp
Cut a small, measured section of the tarp, typically 1 square meter (or a known size, e.g., 1 square foot, and convert to square meters).
Weigh that section using a digital scale that provides the measurement in grams.
- Calculate the GSM
If you already measured a 1-square-meter section, the weight in grams is the GSM.
If you measured a different area (e.g., 0.5 square meters or 0.25 square meters), multiply the weight to reflect a full square meter. Here’s the formula:
GSM= Area of the tarp section (in square meters)÷Weight of the tarp section (in grams)
For example:
If you weigh a 0.5 square meter section and it weighs 200 grams, you would calculate the GSM as:
GSM=200÷0.5=400GSM
Why GSM Matters?
Durability: Higher GSM tarps are more durable and better suited for long-term or heavy-duty use.
Water Resistance: Heavier tarps (higher GSM) generally offer better water resistance, making them suitable for rain, snow, or extreme weather.
Application: Choosing the correct GSM helps ensure that the tarp will hold up to the required task. For example, a tarp with a higher GSM is ideal for covering construction materials or vehicles, while a lower GSM tarp might suffice for lightweight outdoor protection.
Understanding GSM ensures that you select the right tarp for your specific needs based on strength, weather resistance, and durability.
