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Vriesco International Fabrics bv.
tips / measuring

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Measuring instructions

Measure accurately and calculate the fabric needed

A substantial amount of money is often involved when purchasing made-to-measure window treatments. This is why it is important to measure accurately and to calculate the exact amount of fabric to be used. The salesperson must know a great deal about the types of window treatments and the fabrics which are used to make curtains. Sound advice on the made-to-measure aspects is also indispensable. The order form must be filled in completely and correctly. Vriesco International Fabrics provides the most important measuring instructions for white curtains, in-betweens and overcurtains below.

# Measuring curtains
# Tips

Measuring for curtains

The general rules are:

  • Use a flexible steel rule to take measurements or use a sturdy measuring rod that is long enough to take measurements in one go.
  • Take measurements at least twice in order to prevent errors.
  • Measure on both sides; ceilings, floors and window frames may not always be level; in the event of a height difference, the smallest measurement is the one that should be used
  • Allow for windowsills, radiators and the like - curtains should be able to hang freely.
  • In a new house, make an allowance for any floor coverings still to be laid.

Height and width

  • Inside the recess means that the curtain will fall inside the window or door recess.
  • Outside the recess means that the curtain will fall in front of the window or door recess.
  • In a new house, make an allowance for any floor coverings still to be laid.

The length of the rail or rod determines the width of a curtain. If there is no rail or rod yet present, we advise that that the rod or rail extend a minimum of 20 cm. beyond the window on both sides; this allows the curtains to fall nicely in front of the window.

The height is determined by the distance between the floor and the top of the curtain. Two cm. must be subtracted from this distance so that the curtain may hang freely above the floor. This finished height is the height including the `heading.´

Extra instructions

Curtain composed of two or three sections:
Requests for curtains in two sections on one set of rails or a rod must be indicated on the form. If the sections are unevenly sized, the sizes of the separate sections must be indicated; in other words, the width of the left as well as right section must be shown on the form. For curtains with three sections, the third section may be filled in on a new order form. Since the workshop compiles all of the orders for each customer, these curtains will be made from the same fabric using the same pattern height.

Short curtains:
For short curtains (for example those extending to the windowsill), Vriesco recommends that the curtain fabric not hang to the exact height of the windowsill itself. The influences of heat and moisture can cause the length of the curtain to vary to some degree, and this difference is less noticeable if the curtain hangs some 20 cm. over the edge of the windowsill.

Spacious hanging:
A beautiful pleat brings out the best in the colour and design of curtains: the most commonly-used pleat is the double pleat. The most beautiful curtains are those that hang from the ceiling to the floor.

Fabric used

There are three types, examples of which may be found under Possibilities. For each pleat, there is a corresponding percentage by which the width must be multiplied in order to calculate the required amount of fabric.

  • Fabric used single pleat, double pleat, triple pleat
  • Overcurtains 180% 250% 300%
  • White curtains 200% 250% 300%

Fabric used for curtains with rings:
For applications using rings of 15 mm or 40 mm in nickel or brass, the width is multiplied by 180%.

SFabric used for curtains with loops:
Curtains with loops or tied loops also require that the width be multiplied by 180%. Available only with white curtains, in-betweens and curtain fabrics, not with velour.

The heading of the curtain is the height between the top of the curtain and the hook. The heading covers the runners and part of the rail. The standard measurement used for the heading is 2.5 cm. If you require a different size, you will need to indicate this on the form.

When pleated curtains are hung on a rod with rings (the hook is threaded through an eye attached to the rings), the heading may only be 1 cm. This heading will thus only cover the "hanging ring." The rings and the rod will remain fully visible.

For curtains with 40 mm rings, Vriesco recommends a 2-cm. heading (maximum of 4 cm.). In order to determine the correct size of the heading, you must ask the customer the manner in which the curtains will be hung.


Overcurtains are manufactured with standard 8 cm. fleece tape. The sides and bottom are blind hemmed. The distance between the pleats is approximately 10 cm. You may demonstrate this to the client by showing them a curtain sample.

White curtains are made using standard 6 cm. fleece tape; if possible, the side is blind hemmed. The bottom of the side seam is fitted out with a lead weight. The distance between the pleats is roughly 8 cm.

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