NBS Source
List your products

Visqueen Top Hat Units are used to provide an effective seal around service pipe penetrations. The base of the preformed units should be sealed using double-sided jointing tape and Pro Single Sided Jointing Tape.

General information
Specification data
Product Reference

Visqueen Top Hat Units


Rigid preformed pipe sleeve

Flexible preformed pipe sleeve


110 mm

135 mm

160 mm

Contractor's choice

As drawing ___

Product Options

Visqueen Jointing Tape, Visqueen Pro Single Sided Jointing Tape and pipe clip:

  • Visqueen Jointing Tape: A double sided adhesive strip used to bond the base of the unit to the membrane.
  • Visqueen Pro Single Sided Jointing Tape: A self adhesive pressure sensitive tape used to seal the joint between the skirt of the unit and the membrane.
  • Secure the top hat unit to the pipe with a jubilee clip.