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Lead Expansion Joint 400mm x 3M

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Lead Expansion Joint 400mm x 3M

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Availability: In stock

Excl. Tax: £257.25 Incl. Tax: £308.70
T-Pren is a composite material with a centre section of neoprene to provide the expansion and contraction bonded to metal on either side, which is then welded onto sections of the metal gutter.


Daily and seasonal thermal cycling causes metal gutter linings to expand and contract, and if expansion joints are not provided this movement will cause the metal to crack and the gutter to leak.

T-Pren was developed to overcome these problems by providing a waterproof expansion joint, which reduces the number of outlets and eliminates the need for steps.


  • suitable for aluminium, copper, lead, stainless steel and zinc gutters
  • produced to ISO 9001 quality standard
  • suitable for use in rural, urban, industrial and marine atmospheres
  • has been used without failure in very hot and cold climates


For use with lead lined gutters with restricted falls and as a low cost alternative to the restructuring of existing details. Advice on use:

  1. Lead Expansion Joint should be fixed at intervals conforming to Lead Sheet Association guidelines;
  2. Overlay each length of lead sheet to be joined on either lead wing of the Lead Expansion Joint and trim the sheet on both sides so that both overlays are a minimum of 25m in width;
  3. Protect the rubber in the Lead Expansion Joint before starting to weld;
  4. Using standard lead burning techniques, weld the expansion joint to both lengths of sheet. A single weld should be sufficient when lap welding Code 5 rolleed sheet;
  5. Apply Premium Patination Oil to all exposed lead surfaces taking care that the patination oil does not come into contact with the rubber section of the expansion joint;
  6. When using Expansion Joint Plus, ensure that the bonded edge of the cover strip is on the upper side of the neoprene strip with respect to the gutter fall.

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