All you need to operate Window Energy Ratings
ER Certification Ltd - All you need to operate Window Energy Ratings

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Our test laboratory

The ERC Testing Ltd. test laboratory is based in Leigh, Lancashire. It provides testing services for the windows, door and safety glass industries.

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Bill Keating

Bill Keating

Managing Director


Mobile: 07980 863175



Following several years experience in research and development, Bill spent several years writing, implementing and auditing Factory Production Control / Quality systems at sealed unit, toughened glass and window manufacturers across the UK. He has gained the necessary qualifications to support this work.


As Managing Director of ER Certification Ltd. he is, in addition to conducting assessments and audits, responsible for the day to day running of the company and ensuring that once approved  assessment and audit reports  are passed on promptly to the BFRC for final ratification and processing of WER labels etc. He aslo ensures that documentaion for our own CMS Mark schemes re processed promptly.


He conducts audits for other certification bodies including TÜV Rheinland and AMS Inc., a North American organisation which provides certification to companies selling glass, windows and doors in North America.


Willie Montgomery

Willie Montgomery

Lead Assessor - ER Certification Ltd.


Mobile: +44 (0)7917 375466



We are very fortunate to have Willie working with us to deal with our activities not only across Northern Ireland and Ireland, but also in England and Scotland.


Having been employed in the quality management side of public sector housing in Northern Ireland for 33 years, Willie spent his last 12 working with Specifications for PVCu, Timber, and Composite Windows & Doors together with related Glazing Specifications. He was largely responsible for the drafting/updating of these specifications together with ensuring their proper implementation at manufacturers.


During this time he not only gained a unique insight into the working and management of the fenestration industry across the province but became highly respected for his breadth of knowledge and ability, not only in resolving quality issues but also in advising on research and development.