Document ‘L’ Compliance and WERs

Profile 22 delivers more opportunity to help you maximise the sales potential from window energy ratings and U-values with a complete package of support to help you achieve full compliance with the latest legislation.

From technical assistance in achieving energy-rated windows, through to sales support that helps you sell the benefits on to the trade, retail and commercial sectors.

All Profile 22 customers benefit from innovative tools to help them achieve certification, such as our unique U-Comply Self-Help Calculator, which generates accurate, verified window and door specifications for U-values and window energy ratings.

What is a Window Energy Rating (WER)?

Window Energy Ratings provide a benchmark for comparing the energy efficiency of different window systems.  The rating is a single number that measures a window’s overall energy performance.

It is calculated by measuring the energy flow through a standard window (1.23m x 1.48m) and takes three variable factors into account:

• The heat transmitted into the building through the glass from the sun (solar gain)
• The heat loss from the building through thermal transmittance of the window components (expressed as the whole window U-value)
• The heat loss resulting from air leakage through the weather seals

The energy efficiency of a window is shown by a simple energy rating label, already recognised by consumers.

For more details on energy efficiency and how to achieve the best possible energy rating contact Profile 22 now or call 01952 290910 and ask about attending one of our e-Quip Window Energy Rating workshops.