I’ve got leftovers from a project of this material.
http://www.homedepot.com/p/QEP-100-sq-ft-48-in-x-25-ft-x-1-4-in-Natural-Cork-Underlayment-Roll-72003Q/203498861?cm_mmc=Shopping|THD|DigitalDecor|google||pkw__pmt__product_203498861&mid=sfN3EeOPw|dc_mtid_8903yuu57254_pcrid_142853572254_pkw__pmt__product_203498861_slid&gclid=Cj0KEQjw2fLGBRDopP-vg7PLgvsBEiQAUOnIXO2FzRQ2O1kdEsZ2XrATgXgs6UqGpS7YHCVIUVry5LQaAqXn8P8HAQ
I think it will work fairly well.