Steel beams or interior and exterior plaster, foam, transcribed by steel beams or flooring unless South Groove about 10 mm Groove wedding, UD with plaster material sealing type paint.
Or steel beams, both external and internal coating over foam separation groove floors. Or steel beam approximately 10 mm. Subject to a stunning soundtrack plaster. Sealed with sealant painted over.
Or steel beams, both inside and outside to gloss over the foam by grout under the floor or the steel beam about 10 mm groove roughcast for beautiful dress up with material grout type painted over.