Kestrel's stand will be dominated by the new high-performance composite Accord range. Made from a combination of PVC and wood products, known as Root-Ex, Kestrel claims the composite has the durability and workability of PVC with the stability and rigidity of wood. Accord sills have a low expansion rate, allowing butt joints - more commonly associated with wood - to be used in place of joint-capping. The thickness can be greatly reduced, allowing slim installations, and with no knots or raised grain. Kestrel Accord does not require the same preparation as an all-wood sill, and can be sawn, nailed and drilled like wood or welded like PVC, with standard equipment. It does not contain harmful formaldehydes and the wood fibre used in its composition is from renewable sources.