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British Steel estimates that refurbishment is worth over 40% of the UK cladding market. Precision Metal Forming (PMF), a division of British Steel, now part of the Corus Group, plans to grow its share of this market, building on high profile projects it has supplied.These include stadiums such as Manchester United and Manchester City football clubs, where old concrete facades have been over-clad or stripped and re-clad with PMF C60 and C38A profiles.`Many arenas are reviewing their external appearance and maintenance efficiency,' says John Sklenar, general sales manager at PMF. `Some require total stripping and re-cladding, but where the old cladding is still structurally intact, others may benefit from over- cladding roofs and walls. Either method can incorporate the relevant company or team colour from the HPS200 range.`Most buildings being refurbished today were well engineered when erected,' continues John Sklenar. `But often very little thought was given to issues such as energy conservation, insulation, cold bridging, occupier comfort, acoustics and condensation.`The PMF range of products can address all these issues.'Shown below is an example of the company's AluseamAE roofing system recently installed at The Royal School in Haslemere, Surrey.An important consideration in this area of outstanding natural beauty was to keep the ridge height of the roofs as low as possible. The school was also keen to keep heating and lighting costs to a minimum. These factors, together with the need for a striking new look, led architects at Bristol-based design & build company Matrix R and sub-contractors S&J Roofing to use AluseamAE roofing.In fact this was considered the only built-up system that met both the structural and aesthetic demands of the 315 sq m roof.Four main curved roof parts are hinged on a central column, sloping four ways, rotating 90 degrees and finished in BS00A05 Granite Grey - ensuring a contemporary look which is distinctive from the neighbouring buildings. The roof shell and ancillaries were curved on-site.Secret fix clips engineered as part of the system securely locate the panels into position whilst allowing thermal movement of the roof sheet. Water penetration is eliminated as there are no fixing holes through the external weathering envelope.`Attention to detail was essential because the roofing system was to provide both the internal and external finish,' states Christian Stone, project designer at Matrix R. The inner layer of the roof is an acoustic D100 structural liner, eliminating the need for a false ceiling.It's not all about roofs, however. At St John The Evangelist Roman Catholic church in Wallingford, Oxfordshire, a special concrete-free flooring system had to be designed.The church was to be extended, but inadequate foundations on the original building, coupled with archaeological remains beneath the construction site itself, meant a traditional foundation construction was out of the question.A shallow raft was proposed, but this meant the building and its suspended floor had to be exceptionally lightweight. Architect Alex Amato and engineers Hyder Consulting came up with a solution tin the form of a dry steel deck flooring build-up, using PMF decking.The design reduced construction time, cutting costs and weight and making deconstruction, recycling and reuse of materials easier.The floor was constructed using a 2.5 x 2.5m grid of 178 x 102mm universal beams raised on stub columns 500mm above the top of the concrete raft foundation. The 100mm deep deck was placed over the beams, spanning 2.5m, with each trough Tek screwed to the steel floor beams. The loadings agreed with the building inspector were nearly as onerous as office loadings, however the PMF decking selected had little difficulty coping with the 2.5m spans.