The Mathematics Institute of Oxford University is the largest university building built in the last century. Designed by Rafael Viñoly architects, about 300 m2 of Spanish Blue limestone were installed in the reception area and main staircase, while 1,600 m2 of Cumbria porcelain tile were installed in the basement mezzanine floor. All materials were carefully treated with Fila products by W B Simpson (MIDLANDS) Ltd for main contractor Laing O’Rourke. FILACLEANER Concentrated All Surface Cleaner was chosen for the initial cleaning of surfaces. It is the ideal cleaner for washing acid sensitive stone like Spanish Blue limestone. On a dry, clean surface, FILAW68, the water-based stain protector for non-polished surfaces, was then applied. The product contributes towards LEED credits, is GEV certified and marked EC1 Plus for its extremely low VOC emissions. What’s more, FILAW68 does not form any surface film and protects without altering the appearance of the material. For the initial washing of porcelain tile installed on the raised floor – which includes the canteen area – DETERDEK Grout Haze Remover was used: the acid based descaling cleaner that deeply cleans without emitting harmful fumes or ruining the tile surface. In fact, unlike traditional products with hydrochloric acid, DETERDEK does not harm aluminum and steel trims, does not damage grout, and is not hazardous for the user or the environment.