Laying marble granite steps

Marble and granite surface plate should be made of natural marble and granite plates. Plate surface requires clean and bright, vivid color, no marks, spin pattern. Marble, granite surface should be used with the next layer, the bonding layer can be 1:4 to 1:6 or 1:2 cement sand mortar. With cement sand thickness 20 ~ 30mm; cement mortar with thickness 10 ~ 15mm.In laying before the board shall be the design requirements, according to stone color, pattern, pattern, texture, and so try to fight number; When the sheet cracks, off angle, warping, and surface defects should be removed, the plate shall not be mixed with different varieties of use. Paving plates should be at the grassroots level surface (mat or floor surface level) vertical and horizontal alignment on the elastic, quasi-line position generally taken away from the wall, place a piece of sheet width.Marble Panels, granite plates should be soaked in water, or surface to be wiped dry before thousands lay. Marble, granite sheet at the beginning of the laying of alignment from that side of the line aligned alignment sheet.Sheet laying, paving at the grassroots level with the surface layer, when combined with water sediment layer should be dry mixed evenly and the water spray; when combined with cement mortar layer, it is desirable to dry hard cement mortar. In order to enhance the binding layer and the plate bonding, should be used in combination with the level of applied slurry of cement or dry sprinkler shop, then laid on the plate aligned with the location layer. Alignment by laying the first row, after the subject lines laid by the previous line.Paved the plate should be smooth, straight lines, mosaic correct; plate, the plate and the binding layer and the corner trim and the wall should be close at the puzzle together, without gaps. Marble, granite surface layer of the surface should be clean, smooth and solid; sheet patchwork no requirements when designing the width should not exceed 1mm. Marble, granite surface should be protected after the completion, to be combined with layers of cement mortar strength is required, before waxing to achieve smooth and clean bright. Surface layer of natural marble pieces can also be used to fight, that is, pieces of marble tiling. Require the use of color coordinated, consistent thickness, with no sharp corners of the marble pieces, which combines application layer of cement mortar, fragments of voids between the cement mortar or concrete should be used with the stone tablets of flyash filled. Spell broken the surface of the marble surface should be clean, smooth and solid; fragments coordinated colors; pieces to fill the gap between the dense, not too large gap phenomenon. Marble, granite surface height difference between the two plates adjacent to the permitted deviation of 0.5mm; surface layer plate ranks (seams) in 5m length, the straightness of the allowed deviation of 2mm; surface layer of surface roughness with 2m ruler check the allowable deviation is 1mm. Spell broken marble surface flatness tolerance is 3mm.