Structural Lining is often a cost effective solution to repairing drain damage
without resorting to major groundworks.

Structural Liner Process

1. The drain is examined by CCTV and cleaned to remove any scale, lumps etc.

2. The drain is carefully measured and the felt structural liner cut to length.

3. The required amount of resin is mixed with a hardener and catalyst.

4. The mixed resin is then poured into the liner and then pulled through an ‘impregnation roller’. This looks like an old washing mangle and forces the resin mix into the felt fibres.

5. The liner is then pushed and/or pulled into the drain whilst it is supple.

6. A pvc inner tube is then inflated through the inside of the structural liner using water or air pressure (see left).

This forces open the structural liner tight against the inside of the drain.

(Click the image to see a larger version of the diagram)

This image shows the way shorter and smaller diameter structural liners are inflated using water rather than air.

A length of pipe (called inversion tower) is filled with water creating pressure. The pvc inner tube (called inversion hose) is fed in to the tower and the water pressure forces it through the inside of the structural liner opening out the liner.

This image shows the bottom of the inversion tower. The blue inversion hose and the white structural liner are forced open due to the water pressure.

7. The inner tube is then left in place whilst the liner cures hard. The length of time this takes is dependant on the amount of catalyst used and ambient temperature.

8. The inner tube is then removed leaving behind the structural liner cured in place

Call Us Now on 01603 493085 to book your fixed price survey*

*Fixed Priced Surveys are available in most houses up to 4 bedrooms in the East of England
(Postcodes NR, IP, CB, CO, PE & CM) subject to drain access.