A geomembrane is a synthetic, impermeable liner used widely in civil engineering, agriculture, mining, and environmental applications. It is primarily used to prevent water leakage or chemical infiltration in ponds, landfills, canals, and containment structures.
However, achieving long-lasting waterproofing is not only dependent on the quality of the geomembrane material itself — it heavily relies on how it’s installed. Improper installation can lead to liner failure, leakage, structural collapse, and costly repairs. That’s why understanding the full installation process — from surface preparation to welding, sealing, and testing — is essential.
Before any liner can be installed, the first priority is to properly prepare the surface where the geomembrane will be applied. The substrate must be:
In most cases, a protective nonwoven geotextile layer is placed beneath the geomembrane to act as a cushion, reducing the risk of punctures and extending the life of the system. If the project involves a sloped reservoir, canal, or pond, the subgrade should be graded accordingly to allow for proper drainage and stability.
Once the surface is ready, the geomembrane rolls are carefully transported to the site and unrolled directly over the subgrade. Sheets should be placed in such a way that minimizes wrinkling or tension, while maintaining consistent overlap (typically 10–15 cm) between adjacent sheets to allow for proper welding.
Care must be taken to ensure the geomembrane is laid out in the intended direction, especially for projects with specific flow patterns or anchoring details.
The overlapping sections of geomembrane sheets must be permanently sealed using thermal fusion welding. The most common tool for this is the hot wedge welder, which applies heat and pressure simultaneously to bond the layers.
In tight corners or irregular sections, technicians use hand-held hot air welders or extrusion welders to complete the sealing process. In some applications, special geomembrane adhesive (liner glue) is used for additional bonding strength or patching.
Key welding variables include:
Any inconsistency during welding can result in leaks or weak spots that compromise the entire project.
Looking for Iran Geomembrane Prices?
Get the most competitive quotation for high-quality geogrid directly from Iran. Fast response, expert advice, and export-ready service await you.
After the welding process, all seams must be tested using standard quality control methods to verify the integrity of the welds.
Common methods include:
Testing is a critical step and should always be performed before backfilling or water filling.
The final step involves securing the edges of the geomembrane to prevent movement or uplift caused by wind or water pressure. Typically, geomembranes are anchored into perimeter trenches or fixed mechanically with concrete or earth cover.
Once the liner is fully secured and tested, the pond or tank can be gradually filled with water, under close supervision to monitor for any initial deformation or issues.
Explore Our Geomembrane Range & Specifications?
Discover all types of geomembrane we provide at Fest Polymer — with full technical specs to help you choose the perfect fit for your project. Ready to order? Start here.
A professional installation team typically uses:
The cost of geomembrane installation depends on several variables:
In Iran, installation costs are generally more affordable compared to international markets, while still offering professional-quality execution. For large agricultural ponds or industrial containment areas, working with an experienced geomembrane contractor helps optimize both price and performance.
When it comes to sourcing geogrids from Iran, trust Fest Polymer to deliver top-tier quality, factory-direct pricing, fast international shipping, and secure, flexible payment options. Let's make your next project simpler, safer, and smarter.
Proper geomembrane installation is a delicate yet vital process that requires technical expertise, precise machinery, and strict quality control. From site preparation to final anchorage, each step plays a crucial role in the success of your waterproofing system.
By hiring certified installers, using tested equipment, and conducting professional seam testing, project owners can ensure long-term performance, minimal maintenance, and effective containment in all environments.
For perfect results: We recognize the importance of providing high-quality technical support and advice to all our clients. We would love to help – Contact us for your project.
Product Advice / Request a Solution
Do you have a civil, agricultural, environmental or mineral engineering project or need any packaging solutions? We will be more than happy to give you a solution.
Request for Support / Installation
Do you need professional advise or help to execute your project? Our team will be glad to assist you.
More about Fest
Do you want to know more about our twenty-five years history? It is an honor for us to tell you about the path we took to come here.
Fest │ No. 49, Mardavij Ave. │ Isfahan │ Iran │ (+98) 910 3301172
FEST © 2012 – 2025
