Alarm 15 Orange Woven Geotextile Warning Layer 80gsm

Name: Alarm 15 Orange Woven Geotextile Warning Layer 80gsm
Brand: TCS Geotechnics
SKU: TCS-ALARM15-4.5x100
Price: 335.4 GBP
Availability:  InStock

Alarm 15 Orange Woven Geotextile Warning Layer 80gsm

Alarm 15 is a bright orange woven geotextile used as a warning and marker layer over contaminated or hazardous ground. It provides clear visual indication during future excavations while offering basic separation. Supplied in full 4.5m x 100m rolls for large scale coverage.

£335.40

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500 in stock

Quantity

Manufacturer direct delivery:

29 Mar Estimated arrival to UK mainland addresses within 2–5 working days. Free delivery to UK mainland addresses.

Alarm 15 Orange Woven Geotextile Warning Layer 80gsm

Description

TCS Alarm 15 is a high visibility woven polypropylene geotextile specifically developed for use as a warning and marker layer above contaminated or hazardous ground. Its primary function is visual, clearly signalling the presence of buried hazards during future excavation or groundworks.

Installed between the hazard layer and clean cover material, Alarm 15 provides a continuous, unmissable indicator that alerts contractors before deeper excavation takes place. This approach is widely used on brownfield developments, land remediation projects and sites where contamination is contained rather than removed.

The woven construction offers basic separation and resistance to puncture, helping prevent intermixing between adjacent ground layers. While the membrane is permeable, it is not intended to provide filtration or drainage control and should not be used as a substitute for a non woven geotextile where soil fines need to be retained.

Alarm 15 is manufactured from woven polypropylene tapes containing a UV inhibitor. When installed and covered in accordance with good practice, it offers long term durability in typical soil conditions and temperatures. The material is resistant to naturally occurring soil acids, alkalis, bacteria and fungi.

Installation is straightforward. The membrane is laid flat over the hazard layer, with adjacent sheets overlapped to maintain continuity. It must be fully covered after installation and should remain buried at all times. Alarm 15 is designed for civil engineering and environmental applications rather than domestic landscaping or load bearing reinforcement.

Key Features

High visibility orange warning and marker layer
Designed for contaminated and hazardous ground
Clear visual alert during future excavations
Woven polypropylene construction
Resistant to biological and chemical degradation
Supplied in full width rolls for rapid installation

Material Composition

Alarm 15 is manufactured from woven polypropylene tapes with an integrated UV inhibitor. This provides strength, durability and resistance to degradation when buried in typical ground conditions.

Product Specifications

Polymer type: Polypropylene
Fabric construction: Woven
Weight: 80gsm
Tensile strength MD: 10kN/m
Tensile strength CD: 9kN/m
Elongation at max load MD: 22%
Elongation at max load CD: 15%
CBR puncture resistance: 1500N
Cone drop penetration: 18mm
Characteristic opening size: 330 microns
Water permeability: 10 × 10⁻³ m/sec
Roll size: 4.5m x 100m
Colour: Orange

FAQs

See All

What is Alarm 15 used for?

Alarm 15 is used as a warning and marker layer above contaminated or hazardous ground. Its purpose is to alert future contractors and excavators to buried risks before deeper excavation takes place.

Can Alarm 15 be used for filtration or drainage?

No. While it is permeable, Alarm 15 is not designed for filtration or drainage control. A non woven geotextile should be used where soil fines need to be retained.

Where should Alarm 15 be installed in the ground build up?

It should be installed directly above the hazard or contaminated layer and below the clean cover material, ensuring full coverage and visible continuity.

Woven or non woven geotextile, what’s the difference?

Woven geotextile membranes are designed primarily for stabilisation and reinforcement. They offer high tensile strength and help spread loads over weak ground. Non woven membranes focus on filtration and separation, allowing water to pass through while retaining fine particles. The correct choice depends on ground conditions and the role the membrane needs to perform.

Can a woven geotextile be used on its own?

It depends on the application and soil type. Woven membranes work well on firm or granular sub grades where stabilisation is the priority. On clay, silt or very fine soils, a non woven membrane may be required to provide filtration, either instead of or in addition to a woven fabric.

Alarm 15 Orange Woven Geotextile Warning Layer 80gsm

£335.40

Alarm 15 Orange Woven Geotextile Warning Layer 80gsm

Alarm 15 Orange Woven Geotextile Warning Layer 80gsm