Correct measuring for pleats (Plissee)

A prerequisite for the perfect fit and the proper functioning of a pleated fabric is the correct measuring before you order your pleats. Often milimetres decide how easily the pleats can be installed and later operated. Little corrective action of the clamping cords is always possible and sometimes necessary, even with a correct measuring.

No matter the size of your window, one has to definitely consider the assembling method when measuring. Depending on whether you want to install the pleats in the glass fillet, on the casement or in the window recess, there are differences in width and height of the pleats construction. For installation in the glass fillet, where the pleated fabric basically fits like the pane inside the window frame, the dimensions of the pane equal the dimensions of the pleats. Additionally, one has to deduct 2 milimetres to avoid that the pleated fabric rubs against the window frame when opened or closed.

When installing it at the window frame it furthermore depends on whether you fix the pleats with clamping supports on top and bottom of the frame, or if the clamping feet are mounted with clamping cord angles at the front of the frame. With the clamping support method you have to state the total height of the window frame and with the clamping cord method you have to state the height of the window pane. The width of the pleats can turn out a bit wider than the width of the pane, because the pleated fabric itself is operated in front of the window frame. As a result, the light gap can be reduced, whereas obstacles like e.g. the window handle or ventilation slots must be considered by all means.

Similar to the installation in the glass fillet is the installation in the window recess where the dimensions of the recess equal the dimensions of the pleats. Here as well some milimetres should be deducted to avoid rubbing, because you may have constructionally determined irregularities in the rendering. For an installation in front of the window recess you add the excess length on top and at the side to the recess dimensions.

For special window shapes the measuring process is not much more difficult. With trapezoid windows, which are narrower on top than on bottom, you just state the upper and lower width and the vertical height. With windows in pitched roofs or pointed windows you state the lower width and the total height and add if the slant is left, right or centrical, with round windows you state the radius.

A steel rule should be used for measuring. Neither a folding rule nor a fabric measuring tape achieve exact results, because most of them do not reach the corners and often slide away.

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