A combination underlay consisting of a 3mm rubber underlay laminated with a 300 micron moisture membrane made of virgin plastic.
The Rubber underlay contains high-density rubber crumb bonded with a latex formulation to be resistant to any leaching from the concrete, alkaline, and sulfates thus preventing breakout of the rubber. It also aids in smoothing out any unevenness on the subfloor and provides a degree of sound absorption and insulation and not a sound reflection as per many other alternative underlays available.
The Moisture membrane, a milky white virgin plastic, laminated to the rubber underlay, has a 100mm overlap on the one side in accordance with industry regulations. The membrane, being of virgin origin ensures that there is no degradation of the membrane after installation.