Saturday, November 13, 2021

Method Statement for Tiles Installation and Fixing Procedure

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Laying ceramic tiles by Semi-Dry Mix Method.

  1. Dry Mix Method shall consist of ration (1:4) 1 part of ordinary Portland Cement to 4 parts of sand by volume to form the sand-cement mortar, mixed semi-dry in a mechanical mixer with only sufficient quantity of water added to give a powdery or soft texture or flexibility that maintains or intact its shape when squeezed in the hand. 
  2. To keep the firmness and strength of the mix, the volume of water added is to be kept the same for each batch.
  3. The minimum recommended thickness of Dry Mix bedding with such a system of laying is to be 40 millimeters.
  4. The mix is to be spread to a thickness of relatively 10 millimeters greater than that required for the bed and be completely compacted by tamping and drawing off to the needed and recommended level with a screed board which will give even completion and level surface of the work. Only sufficient & appropriate and recommended mortar is to be mixed and spread as can be covered with tiles before it has secured its initial set.
  5. A thin layer of the slurry of 1:1 (1 part cement and 1 part sand), by volume, is to be poured over the surface of the semi-dry mix bedding and spread with a trowel until it is approximately 2 millimeters thick. Approved adhesive to be applied to the tiles to be laid while the slurry is wet and beaten and mixed firmly into position with a wooden beater to make sure a true and stable surface and contact between the tiles and bedding is accomplished.
  6. Get approval for tile layout through dry laying before proceeding with tile work if the start of the point is not shown in the drawing. In absence of a start-off point or approved layout, arrange tiles so that cut tiles occur at wall lines only and are the minimum, and where they do occur, they are as large as possible.
  7. Before tile fixing check that any color, shade variations, and sizes are acceptable.
  8. Lay the side of the tile by side or keep the specified gap joint by the use of tile spacers as per the approved pattern as shown in the approved drawings. The tiles must be accurately, correctly and in leveled position at the time, they are placed and laid with joints as shown in the approved drawing.
  9. Carefully remove the tile spacers after the laid tiles are set enough to prevent difficulties of pulling out the spacers.
  10. Tiles shall be placed firmly according to the level shown in the approved shop drawing.
  11. Tiles shall be placed firmly according to the level shown in the approved shop drawing.
  12. A spirit level should be used to make sure that the tiles are leveled during the installation process.
  13. Accurately and appropriately form intersections and returns. Conduct cutting and drilling of tile without deteriorating visible surfaces. 
  14. Fit and adjust tile closely to electrical outlets/installations, piping, fixtures, and other penetration, collars, or covers.
  15. Tiles are to be laid level or 1% falls/or as shown in the approved drawings in “wet” areas, as required. Localized variations in level for a nominally flat floor are to be a maximum of +/- 3 mm under a 3 m straight edge. Particular care is to be taken in “wet” areas to prevent low spots and the pooling of water. No soaking is needed for fully vitrified tiles or when the adhesive is used.

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Method Statement for Ceramic Floor Tiles

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