Cetris

Under thin-layer flooring (PVC, carpet etc.) the CETRIS^® board floors must be recemented across the full surface with emphasis on contact joints. Also unused predrilled holes or individual joining elements must be cemented. Bigger irregularities should be ground with angular grinder before cementing.

Penetrant must be applied onto dry floor before wooden parquet gluing. where the parquets are laid as floating the penetrant is not required but a separation membrane of unwoven textile or foam polyethylene between the parquets and the CETRIS^® boards is recommended (to reduce creaking).

If a mosaic, stone of ceramic tiles are to be glued onto CETRIS^® floors the maximum tile size recommended is 200 × 200 mm. These compositions are also recommended for anchoring of heating (resistance) mat and subsequent ceramic tile gluing. When gluing floor tiles it is necessary to follow instructions of the glue manufacturers (recommended consumption, size of cogged spatula at least 8 – 10 mm, glue application on both glued surfaces). Hydro insulation is not needed in rooms not stressed with water splashes. When using a floor tile size bigger than 200 × 200 mm it is recommended to increase the floor compactness – ideally by reducing axial distance of the supports to a half (by beam insertion), or by increase of the slab thickness by 30%.