Infrastructure

 For subsurface drainage and French drains, lightweight to mid-range geotextiles (typically 100–200 g/m²) are usually sufficient, with the key specification being AOS matched to the surrounding soil grading and high permeability. For drainage applications combined with structural separation under heavier loads, mid- to heavyweight fabrics (200–400 g/m²) are typically specified. Project-specific recommendations are available on request.

Separation geotextiles physically prevent two dissimilar soil layers from mixing — typically aggregate sub-base from softer subgrade. Filtration geotextiles allow water to pass while retaining soil fines, preventing migration into a drainage system. Most needle-punched nonwoven geotextiles perform both functions simultaneously, with the AOS specification determining the filtration characteristics.

Yes. Beyond our standard product range, we develop custom geotextiles to project-specific specifications — including custom GSM, fiber composition, AOS engineered to soil conditions, tensile strength targets, and roll dimensions. Technical documentation supporting the custom specification is provided.

Lead times depend on specification, volume, and roll format. For standard specifications, we maintain inventory commitments suitable for contractor scheduling. For custom specifications and large-volume project supply, lead times are agreed at the contract stage. Contact our engineering team for current lead-time commitments in your region.

Yes. Each geotextile supply is supported by a technical data sheet specifying the fabric properties (GSM, tensile strength, CBR puncture, AOS, permeability), along with conformity statements and test data as required by the supply contract.

Standard roll widths are available across our product range, with custom widths developed for project-specific installation requirements. Roll widths and lengths are confirmed at the specification stage of each supply contract.