Biobased foams from condensed tannin extracts from Norway spruce (Picea abies) bark

•Characterization of tannins extracted from Norway spruce bark produced at pilot scale.•The presence of non-cellulosic sugars affects markedly the foaming process.•Condensed tannins extracted from Norway spruce bark were used for the acid-catalyzed polycondensation of foams.•Spruce foams were characterized and compared with other procynidin-type foams.