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!
Conventional CIPP Lining methods are applicated either in the main sewer, working from manhole to manhole, or in house service lines that lead to the main pipe. In both cases two access points are required, one as start point to bring in the devices for the lining process, the other as landing point where the installation ends and final steps are taken to complete the installation.
Trelleborg’s trenchless operating Main-to-House pipe rehabilitation system makes, in the truest sense of the word, the change in direction. This new system works from the main pipe to repair lateral connection pipes. In addition there is no need to make an access pit or hole inside or outside the building. This requires no direct contact or interference with the property owner.
The new MtH method is also the perfect solution when there is no second access point at all, e.g. due to constructional reasons.
The MtH method also provides a solution for the main/lateral interface. The crucial advantage is the homogeneous integration of the lateral liner with the stabilizing „main pipe liner“ in the main line. The main/lateral interface liner adheres to the main pipe without annular space and thus provides a perfect seal also for improperly connected laterals.
No need to enter privat property
Max. rehabilitation length: 30 - 40 m / 98 - 131 ft
Max. line distance between access manhole and lateral junction: 150 m (492 ft)
Connection angle: 30° - 90
Easy to position
Diameters and Angles
Pipe Defect Types
Technical Approvals, Patents, Quality Standards
DN 100 to DN 600
with resin system
In conformance with worldwide standards
Register numbers to follow
In confirmance with European standards
DIN EN ISO 9001
Devices meet the requirements of the applicable EC directives
Qualified personnel will be issued with a training certificate by Trelleborg Pipe Seals.
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