Ua hoʻomohala ʻia ʻo SWD250 Spray Rigid Polyurethane Foam e SWD Urethane Co. USA i nā makahiki 1970.Ua hoʻohana nui ʻia no ke kūkulu ʻana i ka wela wela o ka paia ma US a hōʻoia ʻia ʻo Energy Star e ka USEPA.ʻO SWD250 polyurethane foam he mea hoʻoheheʻe microporous paʻa me ka haʻahaʻa absorption rate, ke kūpaʻa permeability maikaʻi, ma luna o 95% o ka ʻike pūnaewele paʻa.Hoʻohana ʻia me ka ʻenehana hoʻoheheʻe pololei, ʻaʻohe seams ma waena o nā ʻāpana foam i hoʻokumu ʻia kahi papa impermeable piha ma ka substrate.Hoʻokumu ʻo ia i kahi papa pale e pale aku ai i ka komo ʻana o ka wai a hoʻoponopono maikaʻi i nā pilikia wai-wai a me nā pilikia insulation wela.