BuildCheck Website Window/Door U Value calculations

There are two routes to producing U-Value calculations for windows and doors offered by BuildCheck.

  1. UKAS accredited calculations, in line with BS EN ISO 10077-1:2017. This a bespoke calculation for the specific window/door and will produce a calculation which can be incorporated into, for example, Declaration of Performance, (DoP) for a UKCA marking, (formally CE Mark) application and certification with such bodies as CERTASS and FENSA
  2. Using our online 'Oracle' tool to simulate U-value calculations using build ups from a predefined library of components. Thus, enabling fabricators and installers to produce calculations for use for Building Regulation compliance and guidance.

This method uses predefined elements from various manufacturers and cannot address specific elements and materials.

Once you have registered your Oracle Account, you can then have access to a great range of features and tools:

  • Create your Quality Control System (FCP) - Use the simple Oracle Factory Production Control (FCP) template and Guide.
  • The U Value Calculator will check the thermal and product performance of your windows & door sets with the Oracle U Value Calculator, suitable for use in Building Regulation calculations such as SAP.
  • Make sure your Products have Initial Type Testing - Follow the Oracle UKCA Mark check list to ensure your products have valid Initial Type Testing (TT).
  • For FENSA, Certass and UKCA (formerly CE Mark), a Declaration of Performance (DoP), an individually calculated UKAS Accredited calculation is required. 
Building Calculations

U-Value Calculator

Calculations from the Oracle online U-value calculator are suitable for Building Regulation calculations. Once subscribed, it's quick and easy to assess product performance and is pre-loaded with product data for many popular window and door set suites from major PVCu window system companies.
 
Window Energy Ratings – the Oracle U-value calculator can help find the right glass and frame combination for your WERs

Build Check Oracle

Acoustic Calculator

The Acoustic Calculator on the Oracle is a cost-effective alternative to acoustic labelling and testing schemes. It enables subscribers to the Oracle to quickly calculate the acoustic performance of a range of frame and glazing options and in most cases, with no need for acoustic testing in a laboratory.

Subscribers can then have the calculations verified with a report from an accredited UKAS-notified body such as Build Check Limited. We are a UKAS-accredited testing laboratory body No. 4044.

Acoustic performance of glass

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