Wood Window Alliance

The Wood Window Alliance (WWA) was established in 2007; their mission; to promote the advantages of timber in the construction of windows and doors and to set industry standards for those companies supplying them.

To be considered for membership a manufacturer must demonstrate their wood windows and doors are supplied with independent certification of performance, quality and sustainability. Where the WWA logo is seen consumers can be confident of high quality; long lasting timber wood windows and doors supplied by its members.

Wood Window Alliance Full Logo

Benefits to the customer

Life Expectancy

Timber windows and doors offer the best long term value with an expected service life of circa 60 years (subject to exposure conditions and routine maintenance being carried out). Timber frames have been shown to be carbon negative; with a WWA endorsed timber window when used instead of a PVC-U window saving approximately 160kgs CO2e over its 60 year life (source: Heriot Watt University, 2013)

Bereco offer warranties on all factory finished products to ensure the best possible life expectancy.

Low Maintenance

Members only use coating systems that don’t require first redecoration until between 8 and 10 years from delivery (subject to exposure conditions and routine maintenance being carried out)

Bereco use the innovative Teknos coating system on all our fully factory finished products.

Energy Efficiency

Products supplied by a WWA member meet the requirements of Part L of the Building Regulations.

Bereco can offer products with u values as low as 0.5W/m²K as well as an A Rated energy efficient option on our windows and doors.


All timber used in production by a WWA endorsed manufacturer must be legally sourced from sustainably managed forests.

All Bereco frames are manufactured from FSC certified timber governed by BM TRADA’s chain of custody scheme.

Design & Security

WWA approved windows and doors must be designed and manufactured in accordance with BS644:2012 ‘Specification for Fully Factory Finished and Assembled Timber Window and Doorsets’.

Bereco not only have third party certification for general window performance (BS644) but can supply our entire product range with enhanced security certification to PAS24:2012; fully compliant with the new Part Q of the Building Regulations introduced in October 2015.