Windows and Doors in five days

Peace of Mind

We want to help make the process of understanding, specifying and purchasing your new windows, doors or conservatory as painless as possible. We do this by explaining what our products do in easy to understand terms help make the experience fun, and to offer you ‘Peace of Mind’.

You may well come across a number of terms during the process – these can be explained to you by your Teamframes branch. To help you along the way we have explained some of these terms and outlined how they may help you.

FENSAFENSA stands for the Fenestration Self-Assessment Scheme. Following Government encouragement, FENSA has been set up by the Glass and Glazing Federation (GGF) and other industry bodies in response to Building Regulations for double glazing companies in England and Wales.

When replacing windows and doors, homeowners must comply with current thermal performance standards and ensure they get a certificate from FENSA (or similar approved) or Local Authority Building Control. FENSA enables companies that install replacement windows and doors to self-certify compliance under these Building Regulations without the need for a separate assessment from Building Control.

BMTRADA Product certification provides assurance to specifiers, contractors and purchasers that products will perform to an agreed standard. BMTRADA has offered a range of certification schemes under the Q-Mark brand for building products for over 20 years. Whiteline Manufacturing, our parent company has achieved numerous certifications across a range of products.


Energy Window RatingWindow Energy Ratings Certification. BFRC (British Fenestration Ratings Council), the Window Energy Ratings Certification scheme, allows manufacturers to apply to use the energy rating label (pictured right) on their products.

Conventional approaches (such as setting a glass or window U-value) simply assess how much energy a window loses. They do not take into account how much energy a window can gain.

The total energy flow in a window consists of three major components:

  • Thermal transmittance (U-value)
  • Solar factor (g-value)
  • Air Leakage (L50)

The British Fenestration Ratings Council (BFRC) has devised a Window Ratings equation based on values for these components. The rating is expressed as a number and is converted into a grade between A and G (with A being the most energy efficient).

CE-MarkingCE Marking. Under the Construction Products Regulation (CPR) CE marking has become mandatory for many construction products in the UK from 1st July 2013.

CE marking is the only way to demonstrate that a product, or system, complies with the CPR. It is a manufacturer’s declaration that their product meets the minimum requirements of a harmonised technical specification, enabling them and their agents to place their product on the construction market.

Secure by Design also known as SBD is a police initiative that improves the security of buildings and related products such as windows and doors to a high security standard. Our parent company, Whiteline Manufacturing Ltd has SBD certification. Click on image below to view certificate.


PAS24: – In essence is a guarantee that the production of the door you are purchasing is being monitored by a UKAS accredited certification body to ensure compliance with PAS 24:2016 Enhanced security performance requirements for doorsets and windows in the UK. External doorsets and windows intended to offer a level of security suitable for dwellings and other buildings exposed to comparable risk and the specific and the relevant material specific standard for general performance referenced in BS 6375 Parts 1, 2 and 3. Secure by Design certification is directly linked to PAS24 and like SBD is a standard that is either a pass or fail.

Teamframes can offer a range of provides that our both PAS24 and Secure by Design certified