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HD Sharman Ltd.
High Peak Works,
High Peak,
Derbyshire SK23 0HW

The Plygene® Gutterline System – Old Page

Engineered to guarantee leak prevention

Unlike competitors’ general roofing products, Plygene Gutterline is the only BBA approved gutter lining system specifically engineered to restore and preserve gutter performance for industrial and commercial buildings and has obtained a Euro-classification ‘E’ to the harmonised European standard EN 13501-1. Providing a 25 year guaranteed, BBA approved, “gutter within a gutter” system, Plygene Gutterline offers a bespoke solution with minimal building disruption and is an effective alternative to full gutter replacement.

Through ongoing product development, the system has been designed to meet the challenges of all commercial gutter environments, whatever their configuration and complexity.

It is the only gutter lining system that will provide complete peace of mind for specifiers and contractors who want a proven system specifically designed for the gutter environment.



Why choose Plygene® Gutterline?

Totally unique

Our market leading Plygene system is made from an incredibly strong thermoplastic blend engineered specifically for the gutter environment: resistant to mechanical damage, highly durable and weathertight, it withstands foot traffic and is UV resistant maintaining its performance integrity for the full lifecycle of the building. Plygene contracts and expands to suit all environmental conditions without impacting the gutter’s performance or structural integrity.

Non-bonded for expansion and movement

The gutter lining is non-bonded in design and thermally expands and contracts independently from the the gutter substrate material. This means that as the gutter itself thermally moves the integrity of the gutter lining is not compromised and will not craze and crack like liquid coatings or open at the joints like other bonded systems. Hence performance integrity is fully designed into the full product life cycle.

Maintaining or improving rainwater performance

With its unique design configuration that eliminates the need for any sole board or system build up, Plygene Gutterline ensures that the original rainwater flow rate for the building is maintained and in some instances is improved.

Not weather dependent

Installation of the Plygene Gutter lining system is not subject to the vagaries of the weather and can be installed in damp or light rain conditions and doesn’t need an ambient temperature of 5 degrees and rising. It therefore provides contractors, specifiers and building managers with all year around availability to refurbish leaking gutters.

Seamless and continuous

The gutter lining system is seamless in design to eliminate the need for problematic joints that corrode and fail primarily as a result of thermal movement across seasonal cycles over a number of years. Designing out these points of failure extends the performance integrity of the Plygene Gutterline system providing a permanent and guaranteed solution to stop gutters leaking for good.

Engineered to deliver improved installation

Plygene Gutterline is designed to reduce site complexity and is quicker to install compared to the likes of liquids and membranes. It is non–bonded eliminating the need for initial extensive remedial cleaning prior to fitting and the system’s bespoke moulded components reduce labour complexity during the installation process: the net result being faster installation and less building disruption.

View the system (video)

Totally versatile and flexible

There is nothing else like it or comparable on the market; it is a totally flexible gutter lining system which can be configured to meet the demands of gutter profiles irrespective of their material construction.

Bespoke moulded drainage outlets and network components ensure that the system provides full design flexibility to meet the challenges of all gutter configurations.

Seamless and non-bonded

There are no gutter joints that will fail and the membrane liner will not
stress and fracture

Designed to meet the many challenges of the commercial gutter environment

Plygene Gutterline’s bespoke design allows it to be installed in any commercial gutter network whatever the width, length or complexity. Installed by Sharman’s network of registered Trained Contractors, all project works are inspected and certified to exacting quality standards.

The system design is made up from four key elements which are:

  • The thermoplastic liner
  • The specified fixings (fasteners, flashings and stop ends)
  • Drainage components (standard outlets, bespoke moulded outlets, syphonic kits, leaf guards etc.)
  • Network components ( bespoke moulded T-junctions, corners, weirs etc.)

Each of these elements forms an integral part of the design and system guarantee.

The system

Installed by Sharman’s qualified Trained Contractor Network, the bespoke system is purpose designed to provide a seamless, non-bonded “gutter within a gutter” that provides a full 25 year system guarantee when fixed in accordance with the Installation Training Programme.


A thermoplastic, durable, hard-wearing and flexible liner that is bespoke creased to the profile of the existing gutter.


Fixing specifications for mechanically trapping and pinning the liner and all of the system components. These include gutter stop ends, flashings, galvanised angles and a specific range of fixings for each different type of gutter substrate.


There are many types, shapes and sizes of outlets for rainwater drainage. Sharman’s system supports them all, including gravity systems, syphonic, vortex, weir and emergency overflow to name just a few, along with other drainage components such as leaf guards.

Network components

A roof’s gutter network will include transition components to link sections of gutter system, including T-junctions, corners and other bespoke elements. Over 25 years we have seen them all and we have developed our manufacturing capability to produce bespoke moulded network components to any size or shape to match the existing building.

Our Other Systems

The Cut Edge Corrosion System

Seamsil 100 cut edge corrosion system is guaranteed for 15 years.

The Full Roof Coating System

Delcote architectural full roof coating system is guaranteed for 20 years.

The Gutter Coating System

Delcote GS gutter coating system is guaranteed for 10 years.

The Gutter Joint Repair System

Seamsil 300 is a market leading 12 month temporary gutter joint repair system.

The Bolt Encapsulation System

Seamsil 400 is a market leading 12 month bolt encapsulation system.

The Rooflight Coating System

Delglaze rooflight coating system is guaranteed for 10 years.

Request a sample

We have both material and full system samples available, click here to request your sample.

Request a CPD or system demonstration

Our specification team will visit you to deliver CPD training.

Certification & guarantees

The only BBA certified gutter lining system, guaranteed for 25 years. There is nothing else comparable.

A system trusted by specifiers and contractors - Manufactured and installed in the UK...

1 million

Metres of system installed


UK commercial properties


Trained Contractors


Market growth

Have you booked your CPD?

We have two accredited CPDs available:

"Why gutters fail and the options to repair, replace and refurbish: A specifier's guide"

"Metal roof refurbishment: A specifier’s guide to good practice"

These CPDs look specifically at commercial and industrial gutter and roof types and give a better understanding of the primary reasons why they fail, along with the refurbishment options available. Finally, we end with a purpose made mobile rig demonstration.

CPD accredited