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ECO SEAL?The waterproofing adhesive for concrete roofing systems is based on polymer modified asphalt. It tightly bonds the film foam glass to the concrete base layer and fills the gap between the ECO BOARD? film foam glass block and the block, connecting the impervious ECO BOARD? film foam glass into a tight joint. The waterproof layer, together with its self-adhesive waterproof layer and SBS modified asphalt coil on ECO BOARD?, provides the building with all-round waterproof protection against impact, freeze-thaw and water-repellent.