How to measure windows for Standard drapery rods / curtain rods

How to measure windows for Drapery Rods, Simple version:

Measure the window width, and add enough on each side so that the drapes will block the light around the sides of the window, allow the drape to slide sufficiently off of the window when they are opened. This measurement is the drapery rod length. Now make sure you have room beyond that measurement for the drapery rod finials you like, and you are ready to order your rods.

For inside mounted rods, measure the opening and provide that measurement without any subtractions in the special instructions field. We will subtract for the mounts after the order is received.

Extended version with FAQ, details, and measuring tips:

Rod width:

Larger windows require more drapery rod width because typically you will put more Drapery fabric on a larger window, and that requires more stacking width. Ten to fifteen percent of the window size on each side is fairly typical for most standard draperies. Most good designers will make the rods long enough so the curtain stacks are nice and full, and sit next to the window rather than in front of the window. The most common beginner mistake is to make the rod too short and crowd the window. If you only add a couple inches to either side of a ten foot window, you will have ten feet of curtain stack sitting in front of your window. Sometimes you won’t have much choice because the window sits by a corner. Do not be afraid to cover wall switches with your curtain stack.

Rod Height:

Hang the drapery high enough so it covers the top of the window by at least a few inches if possible. If you are using tab tops, tie tops, or clip rings, which will drop your drapery down a few inches below the rod, move the rod up a bit to compensate. If you want a taller, more vertical or palatial look, you might want to hang the draperies a little higher, or even from floor to ceiling. If you are using ready made draperies, check to see what sizes are available, and decide on the rod height accordingly. Most ready made drapery panels are available in 84″ length to cover the most common doors and windows which are around 80″ high. It is not uncommon to use an 84″ drapery panel on a 48″ high window. This will give you a uniform look if you have patio doors or sliders in the same room using 84″ drapery panels.

If you are concerned with dust or water you may want to stay off the floor a bit with the drapery but it is not uncommon for the drapery to puddle on the floor for a lavish look.

How much space do I need to stack my drapes off the window?

This is the million dollar question, and probably the most frequently asked. “Stacking width” is the width of your drape when it is pulled back off of the window, or when the drapes are pulled open. Chances are that your drapes will be open more than they are closed, and you will achieve a nicer look if you don’t try to stack the drapes too tightly when they are open, so allow plenty of room for the drapes to stack nicely, and measure accordingly to accommodate the drapes at the sides of the window. More fabric requires more stacking width, and pocket drapes require more stacking width than draperies on rings or tab tops.

How to Determine the Number of Curtain Panels Needed

Step 1: Measure the width of the curtain rod if you have chosen it. If you haven’t chosen one, measure the width of the window and add 1 to 3 inches for each side of the window. The amount you add depends on how far to the side of the window you want the curtains to hang.

Step 2: Multiply the rod length by 1.5 for minimum fullness, 2 for medium fullness and 2.5 for an extra full look. For example, for a 36-inch rod, your measurements would be 54 inches for minimum fullness, 72 inches for medium fullness and 90 inches for an extra full look.

Step 3: Divide your total inches measurement by the width of the panels you have chosen. If you want the curtains to be able to close fully, you should always use enough panels to cover the width of the window. Round up to the next whole number if you want to achieve more fullness. For example, if you have a 28-inch-wide panel and a 36-inch curtain rod, purchase two panels for minimum fullness, three panels for medium fullness and four panels for extra fullness.

Steps to calculate stack

1. Measure outside the window frame from the left to the right, outside the window frame.

2. For unlined drapes, constructed with light to medium-weight fabric, add 10% on each side. For example, if the window is 100 inches wide, add a total of 20 percent for a width of 120 inches. The curtain and rod must be a minimum of 120 inches wide in order for the curtains to clear the window when in the drawn-open position.

3. For blackout-lined or privacy-lined curtains, add 15% on each side. For example, if the window is 100 inches wide, add a total of 30 percent for a width of 130 inches. The curtain and rod must be a minimum of 130 inches wide in order for the curtains to clear the window when in the drawn-open position.

4. For extra heavy curtains, like velvet curtains or chenille curtains, add 35% to the total width of the curtain rod.

How many mounts do I need?

The mounts needed will be determined by the length and diameter of the rod selected. The website will calculate how many mounts are required for the rod length. Please select the mount you want for the ends and if you want to mix mounts, use the “Special Instructions” box specify.

7/8″ rods over 72″ long will require one center support mount , over 144″ requires two, over 215″ requires three and so on.

1-1/4″ rods over 93″ long will require one center support mount, over 186″ requires two, over 278″ requires three and so on.

Do I need Bypass Mounts and C-Curtain Rings?

Bypass mounts and C-Rings are required if you need the curtain to draw past the support mounts. This is common for long window spans, curtains with a one-way draw and corner or bay windows.

How many curtain rings do I need?

The standard rule of thumb for curtain rings is 1 ring for every 4-5” of curtain.

Do I need to clear the window when the drapes are opened?

Not necessarily. While it is practical to get the draperies out of the way of a slider or patio door, at some of your windows space may be an issue, perhaps you don’t care for the view out of a particular window, maybe you want to soften the edge of the window with a few inches of drapery fabric, or use tie backs for a swept back look. It is not necessary to clear the window when the drapes are opened, but it’s a really good idea if you want to be able look out of the entire window or take advantage of the view and light that the window offers.

Rod height, How will I hang my drapes on the Drapery rods?

Tab tops, tie tops, or clip rings will create 1″ to 6″ of space between the drapes and the drapery rod, for a more country or casual look. Eyelet rings will put the drapes about a half inch below the drapery rod, for a nicely finished or formal look, and pocket drapes put the drapery on the rod. This look can lend itself to formal or informal settings. Simply adjust the drapery rod height accordingly to make sure the drapery covers the top of the window. It usually looks good to go a little higher than lower.

Which direction to draw the drapery?

You may want to open the drapery all to one side for a number of reasons, because of foot traffic at a patio door or slider, or perhaps you have a wall with two big windows, and for visual impact you want to pull both draperies out and into the corners of the room with tie backs, medallions, or ball posts with tassels. It is usually helpful to look at the room as a big picture.

Should I group my windows and use one rod for multiple windows?

Often, windows are set in groups with little space between them. Instead of trying to crowd finials and stacks of draperies in between each window, look at the whole wall for different possibilities. It is not uncommon to span the whole group of windows with one drapery rod , and group your drapery stacks between the windows and/or to the sides of the group.