Home > Companies > Fixfast Ltd > FarBo® Overflow Insert

Overflow insert for roof drainage systems.

Features and benefits:

  • Manufactured from high quality grade 1.4401 (316) stainless steel.
  • Includes ethylene propylene diene monomer (EPDM) O-ring for ultimate waterproof seal.
  • Used in conjunction with 110 mm roof outlets to provide overflow by increasing the drainage height to 25/ 35 mm above roof level.
  • Manufactured in accordance with ISO 9001 and ISO 14001 Quality and Management Systems.


Used in conjunction with FarBo® roof outlets to provide an overflow roof drainage system.

Standard product features


Grade 1.4401 (316) stainless steel.

External diameter:

106 mm.

Outlet diameter suitability:

110 mm.

Overflow height:

25 or 35 mm.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
90-10-20/348 High density polyethylene (HDPE) above ground drainage pipes

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Fixfast Ltd


+44 (0)1732 882387

Product reference


Manufacturer details

Merlin House,
Seven Mile Lane,
Borough Green,
Kent, TN15 8QY
Tel +44 (0)1732 882387
Fax +44 (0)1732 885532
NBS Plus