Best Practice & Materials

E & S W Knowles operate within the framework of a Business Management System, which has successfully gained Accreditations to support our Timber and Door products within the building industry. This gives assurance that our materials have been sourced with environmental consideration.

Working to provide the
best products and service

Our products are made to a high-quality finish which is compliant and fit for purpose, providing the after-care service that meets our customer expectation.

Our Accreditations require strict well managed procedures that are conducted to an internal audited plan. Our 3rd party accreditation bodies, audit giving continuation of certification that is also audited by UKAS Certification body.

FSC Approved Materials at E & S W Knowles

Forest Stewardship Council ®

FSC® certifies that products originate from forests which are managed according to internationally agreed social and environmental principles and criteria. 

FSC Mark of Responsible Foresty

Programme for the Endorsement of Forest Certification

Programme for the Endorsement of Forest Certification (PEFC) is an international non-profit, non-governmental organisation dedicated to promoting Sustainable Forest Management through independent third-party certification.

As part of our commitment to develop products and manufacturing processes in an environmentally responsible manner, we have been assessed by Control Union Certification for FSC® and PEFC Chain of Custody.

FSC and PEFC Chain of Custody guidance requires companies and to record and declare on customer invoices the actual material percentage content of raw material or that within components and finished products (i.e. doors and frames etc).

PEFC Accreditation

ASDMA Member

ASDMA provides a united voice for companies who operate within the bespoke timber door industry. ASDMA members are well positioned to advise specifiers and contractors on key issues in the design and specification of custom made timber doors.

ASDMA exists to promote best practice in the manufacture and supply of timber doors, ensuring that its members manufacture products which comply with all European regulations and standards.

ASDMA Member Logo