H+H International A/S provides wall building materials and solutions in the United Kingdom, Central Western Europe, and Poland. The company offers autoclaved aerated concrete and calcium silicate blocks. It also provides foundation blocks, wall elements, and partition walls. The company serves its products in the private low-rise houses, volume house builders, public sector housing, commercial, and other industries. Its products are used primarily in residential high-rise, self-build, and renovation applications. The company was founded in 1909 and is headquartered in Copenhagen, Denmark.