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Installation Guide

Flexible Liner - Installation

Before you start your installation of any of the Turner & Wilson flexible flue liners, Twinflex, Weldline or Triplelock please be aware that exposed edges are sharp.  Protect yourself against cuts by applying tape to both ends.  Also try not to over coil the liner.

Thoroughly sweep the chimney before installation.

Brickwork must be sound, dry and free from defect. D.P.C., flashings etc. should be thoroughly checked and faults corrected before installation.

It is important to ensure that the lining will pass down the chimney easily. Shine and light down the flue to ensure there are no obstructions. If in doubt, use a short test piece with nose cones and cords on each end.

Liners below 250mm dia. should be in one piece. Use a nose cone with a draw cord and always pass the liner down the flue from the top. Liners should easily go down the flue.

If a lining becomes trapped it is due insufficient clearance:

· DO NOT continue the installation.
· DO NOT use excessive force.
· DO NOT attempt to 'twist' the lining by rotating the coiled end. The very high leverage this causes may result in a partial of the lining.

Flexible Flue Liner Installation - On The Roof

Air supply

There must be an adequate air supply. Ensure that air intakes are not contaminated by any chemical fumes.

Clamp Plate

Fix clamp plate to cap the chimney and clamp the liner. Trim the liner and place the terminal.


Finish by setting the terminal in a sand and cement parging.

Flexible Chimney Liner - Completing the Installation

Appliance Finishing.

For gas fires fit a collector box. These have a removable socket for ease of installation.

Free Standing boilers usually use Vitreous Enamel pipes for the short connection into the flue.

It is important to fit a condensation trap at the lowest point of the vertical liner.

Failure to to this will result in condensation problems.

Please Note: Turner & Wilson does not know the exact situation or circumstances of your home and/or quality of the products already in place. Although the advice and the guide provided will be based on the details submitted by you, any person who relies upon any advice provided by Turner & Wilson given by email, phone or which is contained in any part of the website, does so at their own risk. Turner & Wilson therefore accepts no duty or liability whatsoever, other than a duty to act honesty in good faith.

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