Non -removable formwork is available in the form of blocks of polystyrene foam. After solidifying concrete, the material becomes a component of the foundation. In addition, he begins to play the role of insulation. Light blocks are easily transported and quickly installed at the expense of the key system, like the puzzles and the designer of Lego gather. All external parts of the finished foundation with non -removable formwork are waterproofed in the usual order.
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Removable formwork for the strip foundation is made of metal sheets or wooden boards. To get a very smooth, smooth surface, the aboveground part of the foundation, it is advisable to make a metal formwork. After dismantling, the walls practically do not require improvement. In the underground part, plywood shields and boards are used. The inner part of the formwork is isolated by the crowd, or by other material, so that the boards do not grab with cement, then the wooden frame will be much easier to disassemble.
Particular attention is paid to the upper edges of the formwork, they are regulated using the level.
The concrete solution creates significant pressure, so you need to ensure that the box is strong and cannot shift from the severity of concrete.