Ko te SIWAY A1 PU FOAM he waahanga kotahi, he momo ohaoha me te pai o te mahi Polyurethane pahuka.Kua whakauruhia ki te upoko urutau kirihou hei whakamahi ki te pu tono pahuka, ki te kakau witi ranei.Ka whakawhānuihia te pahuka me te rongoa ma te makuku o te hau.Ka whakamahia mo te whānuitanga o nga tono hanga whare.He tino pai mo te whakakii me te hiri me te pai o te whakaurunga, te teitei o te waiariki me te whakamaarama acoustical.He pai ki te taiao na te mea kaore he rawa CFC kei roto.