British Standard BS EN1279 Part 2 & Part 3

We have been awarded the British Standard BS EN1279 Part 2 & Part 3 for the manufacture of Double Glazed units. The British Standard is a symbol of trust, integrity and quality. Manufacturers having this award associated with their product will reassure customers that they have satisfied the most rigorous of quality processes.

Basic Requirements for achieving BS EN1279 Part 2 & Part 3

1. Implementation of FPC (Self Auditing) System, requires the manufacturer to produce and comply with the principles set out in Part 6.

2. Units to be tested to EN1279 Part 2 (& 3 if appropriate) at a Registered Test House – TNO, BSI, BM TRADA or other approved Testing Establishment. Part 2 is the high humidity cycling weathering test that measures the rate at which moisture penetrates the unit. Part 3 is a combination of a shortened weathering test and a gas leakage test that results in an index that equates to the gas loss rate over a one year period

3. Preparation of Technical File including: Product Indication Papers (PIP’s relating to Part 4 and other components used) and a detailed System Description (often thought to be a simple description of the components used in the manufacture of test units but in reality is a highly detailed document).

4. Declaration of Conformity produced by the Manufacturer claiming conformance to EN 1279.

5. Correct labelling to the specification as laid down in EN 1279 Part 5. CE mark is not mandatory if UK manufacturers are selling product within UK borders.

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Glass and Glazing Federation

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The GGF is the recognised leading authority for employers and companies within the flat glass and glazing industry.

CN Glass is a member of the Glass and Glazing Federation.

Companies are vetted before joining. They must have been in business for three years and have sound financial accounts.

Members are bound to comply with the Government approved GGF Code of Ethical Practice:

Any deposit you place with a member company shall be safeguarded by the GGF’s own Deposit Indemnity Fund.A seven-day ‘cooling off’ period applies to all contracts negotiated away from business premises. This is irrespective of whether you invited the sales call or not.All glazing instlaled shall be to the current safety requirements of the British standard BS6262.Samples shown shall be representative of the product to be installed.Advertising shall be a true and accurate description of the products offered.All members must treat you, the customer, with courtesy and respect at all times.

They must comply with British Standards and GGF specifications.

Deposits are protected by up to 50% of the total contract price or £12,500.00, whichever is lower.

If you have any concerns about a member, the GGF is there to provide consultation and, if necessary, arbitration.


CNGlass is a FENSA registered company.

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FENSA stands for the Fenestration Self-Assessment Scheme. It has been set up by the Glass and Glazing Federation (GGF), with Government approval, in response to the new Building Regulations for England and Wales.

From 1 April 2002, all replacement glazing in dwellings will come within the scope of the Building Regulations. From then on, anyone who installs replacement windows or doors will have to comply with improved thermal performance standards.

When having their windows and doors replaced from this date homeowners must ensure that they get a certificate from the Local Authority Building Control or have the work completed by a FENSA Registered Company.

One of the main reasons for this change to the Building Regulations is the need to reduce energy loss.