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If you are Railroading, and are using the same fabric for each of the 4 rails (center rail, top and bottom rails, and back rail), and if you are using 54" wide home decorating fabric, you will have enough in the 54" width to cover each of the 4 rails. To determine the length required, take the inside width of the cornice and add 27".
Example: Inside measurement of the cornice is 140".
140" + 27" = 167" divided by 36" = 4 ¾ yards for the entire cornice.
When not Railroading fabric or when fabric has a repeat pattern, take the inside width of the cornice plus 27", divided by the width of the fabric, times the width of the strip to be used for that rail, divided by 36” (1 yard). If there is a pattern repeat, use the repeat as the width of the fabric strip.
Example: Inside measurement of the cornice is 140". You are using 54" wide home decorating fabric that you do not want to railroad, but has no pattern repeat.
140" + 27" = 167" divided by 54" (width of fabric)= 3.09 x width of strip which is 12" = 37.08 = 1.03 yards. You would buy 1 ¼ yards of fabric for that rail.
Now use the same example with a 23" pattern repeat:
140" + 27" = 167" divided by 54" = 3.09 x 23" (pattern repeat instead of strip width)= 71.07 divided by 36" = 1.97 yards. You would buy 2 yards of fabric for that strip.
Remember to calculate the amount of fabric needed for each rail.
Remember to add yardage of fabric for trims and accessories to be added, and always consider if you are inserting your fabric flat, pleated or shirred (gathered). Follow kit instructions for each of these situations.
For trims, take the inside measurement of the cornice and add 27". You will need that amount of fabric for each tuck groove on which you are using trim. If you are matching fabric as you would wallpaper, and do not like the appearance, use a decorative touch such as a folded piece of contrasting fabric, or a jabot, etc. to disguise the folded edges of the fabric.
We are sometimes asked if you have to cut separate strips of fabric for each rail, or can you use one strip for the top, center, and bottom rails. The answer is that it has been done, but it is very difficult. This is because of the small pleats required at the top and bottom of each curvature corner. We strongly recommend cutting individual fabric strips for each rail - it simplifies the process tremendously.
How wide do you cut the strips? This is especially important to know if you are using different material on the top and bottom rails than the center and back rails in determining the amount of fabric required. We have provided the following charts to help you. The width of the fabric strips also depends on the thickness of the fabric, since the fabric tucked in the grooves holds the fabric in place. Thin fabric requires more fabric to fill the space in the groove than thick fabric.
Avalon Top / Bottom Rails
Avalon Back Rail
Cosmopolitan Front Rail
Cosmopolitan Back Rail
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Our Products are 100% Made in the USA. Patents # D444,889S and patents pending apply.
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