By chintznpri20223285, Apr 15 2019 07:43PM
We know many of our customers already understand how to calculate yardage for window treatments, but we thought we would share one of our more comprehensive yet easy to follow guides.
Singer Sewing Books over the years has published many versions of how-to.
This one we find translates the best.
"After deciding on the window treatment, install the hardware and then measure the curtains, draperies, shades or top treatments. You will be determining the FINISHED LENGTH and the WIDTH of the treatment. The finished length is measured from the top of the heading or casing to the bottom of hem. The finished width is the width of the rod plus hems, returns and overlap of draperies (if applicable). To determine the cut length and the width add the amounts needed for hems, casings, seams and matching repeats and desired fullness. For easy calculations fill in chart. (See photo below)
Note: Always use a firm yardstick or metal tape to measure; as a cloth tape measure often sags or stretchs. Measure and record all measurements for all windows separately, even if they appear to be the same size.
Special Measurement Considerations:
Allow 1/2" clearances between the bottom of drapery and the floor when measuring for full length panels. This allows clearance for cleaning and any necessary electrical cords.
Allow 1" clearance for loosely woven fabrics. This amount will provide extra margin for them to stretch slightly with out dragging on floor.
Allow 1/2" clearance for sliding glass doors; more then this amount will allow light to filter in the gap at the bottom.
Allow 2.5" clearance for carpeting if it is to be added to room at a future date.
Allow 4" to 6" drapery clearance above baseboard heaters for safety and efficiency of heater.
Underdraperies should be 1.5" shorter then the outer draperies so they do not show behind outer draperies.
Use the highest window in the room as the standard for measuring if windows are at different heights. Place all draperies at same height if ceiling allows.
DETERMINE CUT LENGTH
Measure from the top of the rod to the desired length. To this measurement, add the amount needed for hems, rod pocket, headings and vertical pattern repeat.
Add double the desired hem to finished length.
Recommended for medium weight fabrics is a 4" hem (8" to be added to length)
Recommended for sheers or light weight fabrcs is a 5" to 6" hem (10"- 12"" to be added to length)
For short panels or valances the hem margin is 1" to 3" double hem.
Rod pockects and headings.
For rod measure the diameter of the rod and add .25" to 1" to diameter depending on weight of fabric, as well as .25" to 1" for turn under. Headings can vary in size from .5" to 3" this would need to be doubled based on your desired heading size.
Prints must be matched across the width of the panel. Measure the distance between motifs and add that amount to the cut length of each panel.
DETERMINE CUT WIDTH
To the finished width, add the amount needed for seems hems and fullness.
Seams. For multi-width panels, add 1" for each seam. Panels that are not wider than the fabric do not require extra seam allowances.
Side hems. Add 4" per panel for a 1" double folded hem on each side of panel.
Fullness. Fabric weight determines fullness.
For medium weight fabrics standard is 2 to 2.5 times the finished width of curtain.
For sheers and lightweight fabrics 2.5 to 3 timesthe finished width.
Now that you have the basics, stop in and have us help you pick new fabrics for the beautiful window treatments you can now make.