Seams Classification | Types of Seams Series

Types of Seams (Part 1)


Have you ever asked yourself why we people tend to classify everything?

I’ve just read an article about a neurological study that says when we classify something, what we really do is analyze it to understand it.
We people classify things by common elements and make groups, then we know. That is how our brain works.

For instance: if you go to a supermarket to buy some apples, what is the first thing you look for?… yep!, veggies and fruits. We instinctively make a simple logical classification of the food in a supermarket by a common element, in this case: the nature of their composition. 

“Being familiar with seams types is crucial to getting the best result.” 

Now, if you are here reading this, I assume you want to know about sewing seams, not just apples: according to their main function (which in this case is “the common element”), sewing seams are classified into three categories:
  1. Construction Seams
  2. Hems and Finishes
  3. Details

Seams Categories


These seams build the garment (or any other sewing project). Construction Seams hold two or more layers of fabric together.

This category’s code name starts with the letter C, and ​some uses are: armholes, side seams, crotch, etc.

Option 3


Fabrics edges are finished with a variety of sewing techniques to avoid fraying or ravelling. This category gathers those seams that polish the edge of the fabric.

The code name of Hems and Finishes
​starts with the letter H, and some
uses are: bottoms, cuffs, collars, plackets, waistbands, etc.

Option 3


Now we are referring to those seams that we use as a decorative feature, or to give more volume.

Their code name starts with the letter D,
​and some uses are: pleats, darts, tables, boxes, patches, etc.

Option 3
Recognizing seams types will help you to:
  • choose the right seam
  • give precise sewing instructions
  • enhance your creativity​


BONUS | Seams Classification Chart

Seams 3D
Flat Sketches

Any questions? 
Please, leave your questions or comment below, or send me an email at

If you liked this article, take a look at the book 101 Sewing Seams: a reference guide for sewing seams.

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Belu Chi | ​Technical Designer


My mum taught me to sew when I was 15.
​I used to make skirts in every single colour, andt my girlfriends loved them! I later studied Industrial Design, specialized in clothing… and that’s where it all began.

Picture        Picture

This article was first published at Seampedia.
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ABC Seams

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