NORCROS, the shower and tile manufacturer, raised its dividend after a strong first half performance.In the 26 weeks to the end of September the group - which owns Birmingham-based Triton Showers and Staffordshire's Johnson Tiles brands - saw an 8.6% uplift in sales at constant currency to £102.4m.Despite "significant" commodity and energy cost rises  - 37% up in its UK tile business alone - Norcros grew trading profits 2.2% to £6.3m.The group said it expects trading conditions in this country - and in South Africa......for the full story register now for free or login below...