Polymer Based (HD100) expansion joint filler board is basically a cross linked polymer product which is well known for its high compression recovery rate and optimum flexibility. Available in roll form, this black colored join filler board has more than 96% surface hardness level. Its closed cell construction ensures minimal penetration of moisture or water inside to protect applied concrete joint against damp. Free from bitumen, polymer Based (HD100) expansion joint filler board possesses strong anti bacterial feature. It is chemically protected and it has high resiliency level.