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Window Energy Ratings (WER)

Shepley’s range of affordable high energy rated windows is the result of rigorous testing to pair the most cost-effective glass and frame combinations to achieve an energy rating of ‘A’. Our range of REHAU Total 70C, 70S and Vuelta Flush Sash windows are manufactured and certified to BFRC’s ‘A’ rating, giving you optimum energy efficiency.

Product Technical Benefits

  • Made from 5 chamber insulated PVCu profile
  • High-performance gaskets to reduce air leakage
  • Windows manufactured and certified to BFRC’s A rating
  • Easily recognised by homeowners
  • PVC-U windows perform as promised
  • Reduce the amount of heat lost to the outside
  • Lower energy bills
  • Keep homes warm in the winter

PAS 24

Secured by

'A' Energy



Quality products and dependable service to make your business thrive. Make Shepley your partner for composite doors and PVCu windows today.

Buying PVCu Windows from Shepley

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Double or Triple Glazing

By choosing double or triple glazing, a homeowner reduces draughts, increases energy efficiency, reduces their carbon footprint, and lowers heating bills. The effectiveness of a PVCu window will depend on its energy rating – A to E, E being the most inefficient. All new windows are required to be at least a C rating by Building Regulations. Choosing an A-rated window will help any property perform better, with triple-glazing options providing even higher insulation levels.

A Rated Windows

PVCu windows are made from insulated 5 chambered profile and feature high-performance gaskets to achieve ‘A’ Energy Rating, with a standard argon-filled, warm edge Low E glass unit. Triple glazing upgrades are available to achieve U-values as low as 0.9 W/m2k and A energy ratings.

Frequently Asked Questions

What window is the most energy efficient?

All our windows are made from highly insulated PVCu profile, leading to exceptional energy efficiency across our entire range. However, triple glazing options are available for those looking for even higher levels of insulation.

How can I be sure my windows meet the current building regulations?

New and replacement windows must be certified by installers. This can be achieved through FENSA, CERTASS or another certification body or can be approved by building control.

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