Trelleborg Main-to-House (MtH)

 The method

The unique "no-dig" system, that needs no access point in the lateral pipe. TheTrelleborg Main-to-House (MtH) system is a method for the trenchless rehabilitation of property drainage lines by means of the cured-in-place pipe (CIPP) lining technology. The difference from the usual method is the lining direction: It works from the main pipe to repair lateral connection pipes!

Application Areas


Diameters and Angles

Main Pipe Diameters

  • DN 135 - DN 150 | 5" -  6"
    Packer Type 0 
  • DN 200 - DN 225 | 8" -  9"
    Packer Type I
  • DN 250 - DN 350 | 10" - 14"
    Packer Type II

  • DN 400 - DN 600 | 16" - 24"
    Packer Type III

Lateral Pipe Diameters

DN 100 - DN 200 | 4“ - 8“ 

Connection Angles

30° to 90°

Pipe Defect Types

Applicable Damages

  • Leaks with or without groundwater infiltration or exfiltration at pipe joints, pipe walls, junctions, transitions etc.
  • Displaced pipes, cracks and debris, ruptures
  • Mechanical wear
  • Corrosion

Inapplicable Damages

  • extreme pipe or joint offsets
  • broken or collapsed pipes
  • large cross-sectional reductions in conjunction with bedding problems
  • longitudinal cracks at pipe connections


Technical Approvals, Patents, Quality Standards

ASTM Logo black

International Standards

In conformance with worldwide standards


European Standards

In confirmance with European standards


Quality Management


CE Mark

European Standards

Devices meet the requirements of the applicable EC directives

DIN ES ISO 14001

Quality Management

DIN EN ISO 14001

DIBt Logo

Technical Approval

No. Z-42.3-468
DN 100 to DN 600 

with resin system


More Details here

MtH Product Info (2020)


Download (pdf)

MtH Demo at Rheinberg Germany

Case Study 1  

Download (pdf)

MtH at European Patent Office in Munich

Case Study 2  

Download (pdf)

MtH Success story


Download (pdf)

Training example

Product Training

Good practice-oriented training of our installers is a major concern for us and a component of our quality management approach. Only qualified professionals with training are permitted to use our systems.

Qualified personnel will be issued with a training certificate by Trelleborg Pipe Seals. 


Method descriptions 

We place particular emphasis on teaching the correct practical application in conformity with the technically approved requirements, entirely documented in our user manuals/method descriptions, which are the basis for the official technical approvals.


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