Photo: SAERTEX multiCom® GmbH



SAERTEX-LINER® MULTI is an efficient, cost-effective solution that offers industry leading performance. Multiple design options make this GRP pipe liner the time saving, flexible and sustainable choice when it comes to the trenchless rehabilitation of municipal wastewater pipes and pressure lines.

  • Type S+: strong mechanical properties for numerous applications
  • Type S+ XR: suitable for pressure lines up to 33 bar

Image: SAERTEX multiCom® GmbH     


Installation-friendly construction

The construction of SAERTEX-LINER® MULTI allows higher pulling forces and prevents the liner from overstretching. Its reduced weight makes for easy handling, and the lower wall thicknesses shorten curing times. The “FastPlus” option saves even more installation time because the inner foil stays in place after curing.

Technical service life of 100 years

The unique ECR fiberglass reinforcement that makes up our liner is based on multiaxial fabric technology that withstands high mechanical stresses and offers a minimum long-term reduction factor after 20,000 hours (acc. to DIN EN 761).

Gliding and UV light protection foil

The gliding and UV light protection foil comes standard up to DN 600 and max 2.5 ton liner weight, saving you the cost of an additional gliding foil.

SAERTEX-LINER UPgreen: CO2-optimized

The climate-friendly manufacturing process for our UP resin systems saves an average of 250,000 kg CO2 per quarter. On request, we can provide you with a certificate showing the CO2 savings achieved by your projects.


Utilizationmunicipal wastewater and stormwater
Resin typeUP
Temperature and media resistance+
Styrene free?no
DesignTyp S+Typ S+XR
Host pipe profileVariousCircularCircular
Operating Pressure [bar]up to 1up to 33
Fully statically loadable*
DN [mm]150–1,600250–1,200250–1,200
Composite wall thickness [mm]3-154-124.3-12.3
Outer foils:
- Integrated gliding and UV light protection foil
- Permanent foil with barrier function Inner
Inner foil with barrier function:
- Standard (temporary)
- FastPlus (semi-permanent)**Selectable
- Pressure (permanent)
Mechanical Characteristics
Short-term circumferential E modulus [N/mm²]≥ 20,500
Long-term circumferential E modulus [N/mm²]16,000
Short-term bending E modulus [N/mm²]≥ 16,800
Short-term bending stress [N/mm²]≥ 270
Long-term bending stress [N/mm²]210
Reduction factor according to DIN EN 761:
- 50 years [after 10,000 hours]1.28
- 100 years [after 20,000 hours]1.31

*Structural classification for pressure applications | Class A DIN EN ISO 11295 // Class IV AWWA M28
**FastPlus available for DN 200 to DN 1500 max WD 12 mm

Extra time savings: option "FastPlus"

This rugged inner foil remains inside the liner after curing and saves your team about one hour of installation time for every 100 meters of liner. FastPlus also makes it easier to introduce the UV source, even under difficult installation conditions.

Approved by independent bodies

  • DIBt Approval: Z-42.3-350 CSTB:
  • DTA 17/16-311
  • WRc: PT/458/0620
  • Others on request




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