One part of our job as window treatment professionals is to calculate the correct yardage for traversing drapery panels. These calculations involve several steps.
First exact measurements of the window must be taken correctly and in all of the right places. Be sure to use a measuring sheet so that you will not forget any important information.
Secondly, the finished width, finished length and fullness are determined. This information will need to be discussed with the homeowner and/or designer to make sure the drapery will cover the area desired. (We will be using the measurement for the whole window width plus the amount of wall to be covered on each side.)
Thirdly, we need to know what fabric and linings will be used. Does the fabric have a repeat?
After this information is gathered, we are ready make our calculations.
- Multiply the finished width by the fullness amount and add 27”. Then divide this number by 54” to find out how many widths of fabric are needed.
- Add the hem and header measurements to the finished length to get the cut length.
- Divide the cut length by the fabric vertical repeat to find out how many repeats it will take to make up one cut length.
- Multiply the vertical repeat by the number of repeats to arrive at the total cut length. This will be longer than the cut length. Round up this number.
- Multiply the number of widths needed by the total cut length. Divide by 36” for the number of yards needed for the whole window.
Once the face fabric yardage has been calculated you must also calculate the lining yardage using the same method.
Want an easier, faster, and accurate way to calculate traversing panel drapery yardage?
Seamless Workroom Traversing Panel Workbook will do all of this and more for you. As fast as you can type in the basic information, the workbook will calculate your fabric and lining yardages and pricing, trim pricing and yardage, banding yardage, labor costs, hardware costs, miscellaneous costs and sales tax for you. It also includes a workorder form, installation information sheet and change order form.
Blackout linings offer several functions. They protect drapery fabrics and room furnishings from sun damage, control light and privacy to varying degrees, help to control temperature and somewhat absorb sound. And these functions vary in degree depending on the type of lining used.
When blackout lining is produced, a base fabric is sprayed with layers or passes. This base fabric may be cotton, polyester or a blend of both. A dim out lining is made by spraying one layer of acrylic foam on a base fabric and will block about 98% of light. This lining is thinner, softer and generally will cost less than either 2 or 3 pass blackout.
A two pass blackout lining has a base fabric that is first sprayed with a black opaque membrane and then sprayed with a white acrylic foam. While it does offer 100% light block, it is lighter in weight than a 3 pass blackout lining and is usually lower in price.
The thickest and most expensive is the 3 pass blackout. Here a base fabric is first sprayed with a white acrylic foam, then sprayed with a black opaque membrane and finally sprayed with another layer of white acrylic foam on the outside. It also blocks 100% of light but offers more temperature control and sound absorption than the other two options.
Which leads us to why should you care. Although blackouts and dim outs do offer several benefits that other linings don’t, you must take into consideration the increased weight of the treatment (from an operational and a fabrication standpoint), the fact that it is more expensive than standard linings, and sometimes there are additional fabrication costs to consider since it can be more difficult to work with. It is advisable to test a swatch of fabric with a swatch of lining as some fabrics, usually polyesters or poly blends, may repel the rubbery blackout lining. When this happens, a flannel interlining between the two will keep your drapery layers hanging in unison.
Blackout and dim out linings are excellent choices when a client wants a room darkening effect. And understanding and discussing the benefits and limitations of linings with your customer will lead to a completely custom product your client will love.
All our best,
Amanda and Rose Mary
Last month we were invited by Marcella Davis Burke, instructor at Central Piedmont Community College located in Charlotte, North Carolina, to present Introduction to Window Treatments to her Residential Interior Design class. After a brief discussion on what window treatments could include we delved into the topics of fabric suitability, linings, pattern repeats, railroaded fabric, pleat styles and drapery hardware. These students were so interested in all the topics that we could have talked all day and not covered everything! We hope we left them with the desire to learn more and become informed about window treatments and how they can be an excellent product to offer their clients. This was our second year presenting to Marcella’s class and we certainly look forward to future invites. It is so refreshing and invigorating to be around young and talented designers!
If you are interested in any to these topics, be sure to check out the Soft Furnishings Designer Basics section of our blog on our web site.
All our best,
Amanda and Rose Mary
This excel workbook will help track every detail of multiple projects from start to finish. Sections included are Jobs in Tracker, Job Details, Materials, Processes Completed, Pricing & Yardage/Meterage, Change Order & Remakes, and Vendors Used.
We have added many new features to our project tracker! Click the link to see how it works.
We have made a few updates to the Traversing Panels Workbook.
- Choose the amount of fullness you need
- Calculate for multiple windows with the same width and same length
- Each page will now print on one piece of paper for easy readability
Please contact us if you have any questions or would like to discuss any of our products!
Amanda and Rose Mary
Rose Mary LeBlanc presented to the Interior Design students at Central Piedmont Community College on Tuesday, February 20th . (Amanda tagged along as her side kick and official photographer!) It was a great opportunity to discuss custom window treatments with these soon to be professionals in our industry. Thanks to Marcella Davis-Burke for inviting us into her class, we thoroughly enjoyed out time with them! And also thanks to Marcella for this wonderful note:
Rose Mary & Amanda did a FABULOUS job presenting window treatment basics to our class of budding designers! These industry professionals brought their talent, energy and enthusiasm to the class sparking a keen interest in the creative field of window treatment design. EVERYONE appreciated the gift of their time, knowledge and team building opportunity as they break into the field of interior design! HATS OFF to Rose Mary & Amanda!!!!
In this presentation we will show you how to prevent lining and face fabric from separating.