Calculating Drapery and Fabric Weight
1) Fabric
Weight - Some
fabric samples list on the back of the swatch the weight listed in Ounces/SqYd (Ounces per Sqaure Yard).
Call the manufacturer for the weight if not listed anywhere.
2)
Lining Weight – Most drapery linings are 2oz - 4oz - Per Square
Yard.
·
Finding Drapery Weight Formula:
Total Square Yards = (Total Yards x 36 x
Fabric Width) ÷ 1296 (1-Sqaure Yard)
Weight = Total Square Yards x Weight in
ounces per SqYd) ÷ 16 oz in 1 Lb
Example: 32 Yards of 54” wide fabric weighing 14 oz/SqYd
Total Square Yards = (32 x 36 x 54)= 62,208 ÷ 1296 = 48 SqYds
Weight
= (48 x 14oz) = 672 ÷ 16 = 42 Lbs
·
Finding Lining Weight Formula:
Total Square Yards = (Total Yards x 36 x
Fabric Width) ÷ 1296 (1-Sqaure Yard)
Weight
= Total Square Yards x Weight in ounces per SqYd) ÷ 16
oz in 1 Lb
Example: 32 Yards of 54” wide lining weighing 6 oz/SqYd
Total Square Yards = (32 x 36 x 54)= 62,208 ÷ 1296 = 48 SqYds
Weight = (48 x 4oz) = 192 ÷ 16 = 12 Lbs
Chart of Fabrics by Weight
|
Fabric
Type |
Weight
per Square Yard |
|
Drapery Lining |
2~4
oz |
|
Interlining |
5~6
oz |
|
Blackout Lining |
6~10
oz |
|
Bump Lining |
12~14
oz |
|
Silks |
2~4
oz |
|
Chintz |
2~4
oz |
|
Printed Cottons |
4~6
oz |
|
Linens |
6~10
oz |
|
Jaquards |
10~14
oz |
|
Velvets |
14~18
oz |
Contact the fabric manufacturer for
your specific fabric weight
Note: If overall Fabric and Lining weight
exceeds 55 Lbs, choose the Somfy Glystro
50 Motor