We offer a fully bespoke HETAS registered service and work with Gas safe registered engineers so that you can be reassured that all work is to the highest standard and industry compliant. Whether your home is either a new build, listed, traditional or architect designed has an existing chimney, requires a false chimneybreast or requires twin wall flue. Relax in the knowledge that with Alcosa experienced in-house technicians all our work is carried out to the highest standards.  

We primarily line with 904 grade twin wall multi-fuel flexible stainless steel as in our opinion the advances in this type of liner has outstripped the other available methods. We always ensure that the linings are insulated with either rock wool wraps or a backfill in accordance with the manufacturer’s instructions. 904 linings are covered by a 25 year warranty provided by the supplier/manufacturer. On completion of works a numbered data plate is affixed at the property and the installation registered with HETAS in accordance with current regulations.