Rainy or sunny weather, aerogels always insulate. With outdoor installations the rain will not stop work, because Aspen aerogels are hydrofobic and do not need to be covered.

Aspen Aerogels’ blanket products are chemically treated to repel water at the molecular level. This treatment process keeps water from penetrating or condensing within the pore structure under demanding conditions - even after submersion in seawater for 6 weeks! The test was done with Spaceloft 2200, and its thermal properties were tested afterwards with ASTM C177 test. No change in thermal properties was noticed afterwards. Aspen's patented production proces adds hydrophobicity to all their materials.