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

Certification & Guarantees

Your Choice of Guarantees

Sharmans gutter and roof refurbishment systems are guaranteed to extend building lifecycles.

Independently tested against leading rigorous industry standards, the systems have been specifically designed for the gutter and roof environments. Installed into the commercial roof sector since 1985, our systems have stood the test of time, providing complete peace of mind to contractors.

These market leading systems are underpinned by a range of comprehensive guarantees to choose from.

Product Guarantees

As standard, all of Sharmans market leading gutter and roof refurbishment systems offer a Product Guarantee as follows:

  • Plygene Gutterline System: 25 years
  • Seamsil 100 Cut Edge Corrosion System: 15 years
  • Delcote Architectural Full Roof Coating System: 25 years
  • Delcote GS Gutter Coating System: 10 years
  • Delglaze Rooflight Coating System: 10 years
  • Seamsil 400 Bolt Encapsulation System: 12 months

What does the Product Guarantee cover?

The system’s material components as supplied by Sharmans are fully guaranteed to perform in line with their specification for the duration of the guarantee. If there is a failure of the system’s material components, Sharmans will repair or replace as appropriate at no cost.


How is the Product Guarantee generated?

Correct installation/application methodologies prescribed by Sharmans are critical to the lifetime performance of our gutter and roof refurbishment systems. Our Approved Contractor Network receive comprehensive survey and installation training at one of our two purpose built training centres.  Following review and approval by our Technical Team the Guarantee is issued.

Product Guarantees

Plygene Gutterline Sample Product Guarantee
Format: pdf

The Gutter Lining System

Seamsil 100 Sample Product Guarantee
Format: pdf

The Cut Edge Corrosion System

Delcote Architectural Sample Product Guarantee
Format: pdf

The Full Roof Coating System

Delcote GS Sample Product Guarantee
Format: pdf

The Gutter Coating System

Delglaze Rooflight Sample Product Guarantee
Format: pdf

The Rooflight Coating System

Seamsil 400 Sample Product Guarantee
Format: pdf

The Bolt Encapsulation System

Certification - The Plygene Gutterline System

BBA Certified

Within the UK roofing industry, Plygene Gutterline is the only commercial lining system accredited by the BBA for the gutter environment. Onerous testing in the areas of dimensional stability, tear strength, tensile strength, elongation, heat resistance and low temperature flexibility make Plygene Gutterline the first choice for both specifiers and contractors alike.

UV Certification

Independent accelerated outdoor ultra violet (U.V.) testing by Q-Labs in the arduous sub tropical high intensity sunlight of southern Florida have been ongoing since May 1997 and provide an equivalent U.K. U.V. certification of 39 years……and rising.

BBA certificate
Format: pdf

Function: This certificate relates to Gutterline, a watertight thermoplastic membrane system for lining existing gutters

Site Surveys and Technical Support

From site survey, condition reports and specification generation through to installation, inspection and guarantee, we support you all the way.

Book a Training Course

We run regular training courses at our purpose built training centres in Derbyshire and Wiltshire.

Become an Approved Contractor

Learn how you can join our Approved Contractor Network.

Our Experience

See all case studies


Factory engineered to meet this complex site challenge. When Midlands-based facilities management and construction specialists Oakley Industrial Services were asked to provide a fully extended lifecycle solution to 1,400 linear…

Barnsley Football Club

Barnsley Football Club had been experiencing leaks over seats in the main stand to the dismay of football fans for over 5 years.