Installation

Measurement and Installation of the External Windowsill

  1. Preparation of a reveal for embedding of the external windowsill – cutting out of a small gutter.
  2. Measurement of the windowsill length – the internal dimension of the reveal must be measured.
    • a / at least 10 mm on each side must be added for windowsill embedding
    • b / if plasters have been finished and the windowsill is not to be embedded, it is necessary to subtract 3 mm on each side
      (lateral cover thickness)
  3. Measurement of the windowsill depth  the dimension is measured from the windowsill rabbet in the window frame or from the bottom profile under the window frame and the edge of the reveal covered with plaster and the minimum draining distance of 40 mm must always be added.
  4. Screws by means of which the windowsill will be fixed to the window are part of the delivery; screws will be covered by plastic screw covers.
  5. Now wedges must be put under the windowsill board so that it could be leveled by means of a water level. It is necessary to keep a slight inclination (6°) to ensure adequate water draining.
  6. The windowsill is foamed by means of mounting foam, low-expansion foam is recommended to prevent the windowsill buckling. Finally, the windowsill must be weighted down in its full length.
 venkovní parapety

Measurement and Installation of the Internal Windowsill

  1. Preparation of a reveal for embedding of the external windowsill – cutting out of a small gutter.
  2. Measurement of the windowsill length – the internal dimension of the reveal must be measured and at least 5 mm on each side for windowsill embedding must be added. Then 2 mm on each side must be subtracted from this length, which corresponds to the lateral cover thickness.
  3. Measurement of the windowsill depth  the dimension is measured from the windowsill rabbet in the window frame or from the bottom profile under the window frame and the edge of the reveal covered with plaster and the minimum draining distance of 40 mm must always be added.
  4. Measurement of the windowsill depth – the dimension is based on the reveal width to which 10 mm for embedding under the window profile and at least 30 mm of overlap from the edge of the internal plaster must be added.
  5. If it is necessary, wooden wedges are placed under the windowsill board and it is leveled with the use of the water level and some foam on the bottom side of the windowsill is added. Then the windowsill must be weighted down in its full length.
  6. After the mounting foam has hardened, wedges can be removed and the whole surrounding windowsill area can be trimmed.
 vnitřní parapety
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