Foam Insulation | eBay22+ watching; |; 68+ sold. View details. They are also widely used in the construction industry as insulation. Product Type: Strong EPS 70 Expanded Polystrene foam Sheets. - ALL AT THE BEST PRICES! Colour: White - As Pictured. Mainland uk co. .... Free P&P. VARIOUS THICKNESS' OF CLOSED CELL POLYETHYLENE foam SHEET 1MM - 12MM BLACK. high quality foam sheet. provides good insulation with sound and waterproof properties. Each sheet is cut to size from a jum.