Comfort Gold offers an economic solution for insulating laminate floors with an integral aluminum foil vapour check. Comfort Gold is produced from closed cell Polyethylene Foam which is CFC and HCFC free and 100% recyclable. Due to the low thermal resistance of the product it is ideal for use with underfloor heating systems. Minor floor imperfections may be accommodated by using these materials. The product has very effective acoustic qualities. 5mm Wood/Laminate Silver Underlay. This Silver Underlay is suitable for use under laminate., solid and engineered floors its suitable for any areas in the Home or Business.