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T-Pren Expansion Joints

T-Pren Expansion Joints

BLM Lead T-Pren Expansion Joints are specifically designed to overcome the problem of laying Lead-lined gutters where the building construction prevents the recommended drip detail being used.

Recommended by the Lead Sheet Association where it is not possible to incorporate the recommended drip and fall joint details when refurbishing Lead-lined parapet or eave gutters.

Lead T-Pren Expansion Joints are manufactured from Code 5 BS EN 12588 Rolled Lead Sheet and have a double bonded neoprene strip to allow for thermal expansion. The reliability of T-Pren has been proven by over 30 years of use without recorded failure.

Standard Lead T-Pren Standard Lead T-Pren

Available in rolls 3m long x 385mm wide.

Lead T-Pren Plus

Lead T-Pren Plus

Incorporates a protective Lead cover strip over the neoprene section. Lead T-Pren Plus is available in rolls 1.5m long x 385mm wide.

  • Maintains a consistent Lead appearance.
  • Protects against UV rays.
  • Prevents foot traffic damage.
  • Extends life.

Technical Data Sheets (Printable PDF's)

T-Pren Gutter Expansion Joint
T-Pren Plus

  • Ensure that Lead T-Pren joints are fitted no further than one metre from either side of an apex.
  • A single weld should be sufficient when lap welding Code 5 Rolled Lead Sheet.
  • Lead T-Pren joints should be fixed at intervals conforming to Lead Sheet Association Guidelines.
  • Always use a recommended underlay.