nora floor coverings do not have to be joint-sealed because they contain no plasticizers that pollute the environment. The dimensional stability of the rolls and tiles when they are laid means that grouting is superfluous (with just a few function-related exceptions). This is a considerable advantage during installation. nora stair systems, stair margins and skirtings can be laid from the roll using SIFLOOR Goman special dry glue. This highly efficient dry adhesive is odourless and environmentally compatible, and doesn't contain any solvents, high-boiling point substances, formaldehyde, chlorine, plasticizers or similar substances. Other advantages are a substantially faster installation together with immediate usability and high adhesive strength.