Buildings and engineering group Alumasc said overall results for the current year will be marginally lower than its previous expectations. In the first ten months of the year, Building Products' divisional revenues were similar to those in the prior period. Engineering Products' divisional revenues were over 20% below those in the first ten months of the prior year.The group's trading performance has shown some seasonal improvement during the Spring following the challenging conditions experienced by the Engineering Products division in particular during the Winter.The group's Building Products division has continued to deliver a robust performance, with year to date revenues across the sustainable building product businesses exceeding strong prior period comparators."The board has confidence that the group is increasingly well positioned to benefit from opportunities arising from the recession and from economic recovery when it comes," said the group.