Is a Membrane Required Under a Resin Floor?

What Does a Membrane Do Under Resin Floors?

In many outdoor situations such as driveways, patios, and paths, a geotextile membrane like the Groundtex Woven Weed Membrane is used under resin bound or bonded systems. This membrane suppresses weeds by blocking their growth through the finished surface while also providing essential ground stabilisation. The result is a firmer, longer-lasting base that supports the resin layer, helping to keep the surface even and reduce required maintenance.

When Should You Use a Membrane?

A membrane is highly recommended for installations where ground movement, weed intrusion, or surface instability could be a problem. This is particularly important over soft soil, previously landscaped areas, or where weeds are known to thrive. For resin bound systems like the Flowstone Complete Permeable Floor Kit, adding a geotextile layer can prevent long-term issues such as surface undulation or weed penetration, especially in driveways and regularly trafficked outdoor zones.

Installing a Membrane: Practical Tips

• Ensure the area is free from large debris, roots, and old growth before laying the membrane.
• Overlap edges of the membrane to prevent gaps where weeds could grow.
• Secure with pins or pegs to keep it in place before adding sub-base or resin-bound gravel on top.
• Choose a membrane sized for your area—Groundtex offers options with coverage suitable for driveways and large patios.