Heavy Iron On 1060HF (85 ratings) £1.00 Quantity: at £1.00 each 72 in stock. Iron on Heavy Weight Interfacing. Available in White. It is a crisp, stable non-woven interfacing fabric used to give extra 'body' to fabrics light to coat weight. Fabrics that require a structured look. Fusible on one side. 68cm wide Washable and dry cleanable. Sold by the quarter metre.