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All about stone window sills

Natural stone is mainly used to make worktops, tiles, stairs and wall cladding. However, it is also suitable for window sills. Why? Because it is extremely durable and resistant to high temperatures, moisture or mechanical damage. We will discuss which grades of window sills should be made of, whether their assembly requires the use of brackets and what thickness they should be, in the further part of the article. So, we invite you to read it!

Stone window sills – useful information

  1. Internal window sills should be made of durable granite. It is the most resistant and the least absorbent of all those on the market. There are no stains on its surface, so for a long time it retains a wonderful appearance. You can use marble instead. It will perform equally well, but remember that it is much easier to stain and absorbs water, so it is worth increasing its resistance by impregnation. The same applies to travertine. It has a higher porosity, so it is easier for water to penetrate deep into its structure. Because of this, we also advise to protect it with an appropriate impregnation.
  2. The thickness of the window sill should be min. 2 cm for narrow and min. 3 cm for longer windows. Of course, these are not fixed standards and the products may be much thicker, but you have to be aware that then their price will increase significantly.
  3. As a rule, the installation of stone window sills does not require the use of additional brackets. They are used only when the product protrudes 2/3 of its width beyond the window niche. Only supports can provide stability. Of course, the product should be inserted under the window frame and wedged on both sides in the side openings of the window niche. If the situation requires it, the wall should be forged in appropriate places.
  4. On properly fixed stone window sills you can stand e.g. to hang curtains. The weight of an adult person should not harm them if 2/3 of their width is adequately supported by a wall or supports.
  5. There is no reason not to place flower pots on stone window sills. All you have to do is make sure that they do not have sharp edges that could scratch the perfectly smooth surface of the stone. What’s more, it should also be avoided prolonged contact with liquids, so any spills should be wiped off immediately. A very good solution is to use special mats and washers, which will minimize the risk of damage to the product, which could occur while moving the pots.



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