Over 220m? of Celotex tuff-R GA 3000Z insulation boards have been installed between the roof of an extension to Lymm Water Tower in rural Cheshire. The derelict Grade II listed, octagonal, stone-built Victorian water tower has undergone a seven-year renovation, turning it into a spectacular, ultra-modern family home. Surrounded by mature beech, oak and lime trees, the property has been designed to merge with its pastoral environment and affords stunning views of the local countryside. Featuring winter and summer lounges, a water feature and a roof deck with Japanese hot tub at its summit, Lymm Water Tower is a successful blend of contemporary minimalism and classic Victorian design cues. The use of slimline Celotex GA 3000Z boards between joists facilitates the achievement of a sleek roof profile, accentuating the Tower extension's clean lines and external colour scheme, yet sacrificing nothing in terms of meeting current thermal insulation standards. Celotex tuff-R GA 3000Z is a multi-purpose rigid poyisocyanurate foam (PiR) thermal insulation board with reflective foil facings. It is used in all common roof, wall, and floor applications. These include lining of timber frame and masonry walls, pitched roof sarking, inter and under rafter insulation and insulation of heated and unheated concrete floors.