Respond to these showcases www. ajplus. co. uk/ajdirect Readers may obtain information about these products by filling in the enquiry numbers on an AJ enquiry card. Advertisers wishing to promote their products on these pages should contact Chris Bond on 020 75056816 Norbord's Sterling OSB facings are being used in Siptec's hightech Structural Insulated Panels (SIPs). SIPs are composite sandwich panels with a foam core that provides high thermal efficiency and ensures that the OSB facings remain rigid in shear. The result is a strong, rigid panel which is extermely light.