Rest assured when you chose a Marlin system your investment is in safe hands.
Our PVC-U profiles are extruded by Spectus Window Systems under a quality management system that conforms to BS EN 9001:2008 and are kitemarked under license to BS EN 12608.
We only supply certified BBA approved products and our installation procedures and standards exceed the BPF code of practice for the installation of windows and door sets (Ref 362/2).

The BFRC window energy rating (WER) certificate numbers for PVC-U outward opening casement windows are 682 (band C), 681(band B) and 1544(band A).

For A-rated aluminium outward opening casement windows the BFRC WER certificate numbers for these high performance products are 1464, 1465 and 1466.

For additional peace of mind all of our window and door hardware is manufactured to BS EN ISO 9001:2000, BSI PAS 23/24, BSI kitemarked and has been independently assessed and certified as Secured by Design – the official UK Police flagship initiative supporting the principles of 'designing out crime'.

Whatever style, colour or finish you choose for your PVC-U or aluminium windows, doors or conservatory Marlin provides a 10-year product and installation guarantee on everything. Furthermore, as standard every aluminium window or door is issued with a 25 year guarantee on colours and finishes.