Sealant/adhesives used for concrete/terra cotta roof restoration/repainting

Coatings to protect concrete from water (other than building materials, paints or oils); compositions for preserving concrete (except paints or oils); preservatives for concrete (except paints and oils); products for protecting concrete (chemicals); products for sealing concrete (other than paints and oils); chemical preparations for the treatment of brickwork; chemical preparations for the treatment of cement; chemical preparations for the treatment of concrete

Chemical compositions for use in the colouring of concrete; chemical compositions for use in the staining of concrete