Part L legislation and Window Energy Ratings

All TSWW products conform to Part L legislation as required by law.
In line with The Sash Window Workshop Company policy to always offer the best products and services to our customers. TSWW has wherever possible used the best available materials to get the highest possible WER for its window products. Whilst still maintaining the flexibility to offer clients a range of choice in what they buy and also maintaining the aesthetic integrity of replacement windows for period property.

WERs on our products range from A through to E, all our products meet Part L legislation as required by law.

If we can be of any further assistance in understanding the legislation surrounding Part L, please contact us on 0800 597 2598 or click here for full details about Part L and click here for more details on Window Energy Ratings.