The 3 Most Popular Seams for Canvas

Item # X-HT-200333

We get asked a lot about what type of seam is best for outdoor canvas projects. So let's talk seams! We are going to walk you through the three most popular types of seams, discuss the benefits and potential drawbacks of each, and show you how to make them. Each seam is analyzed based on strength, water resistance, UV exposure and fabric usage. Then, the choice is yours!

The 3 Most Popular Seams for Canvas

The Overlapping Seam

This is the simplest and easiest seam to make.

  • 90% fabric strength
  • Not as water resistant
  • Threads exposed to UV
  • Efficient fabric usage (equal to seam width)
The Overlapping Seam

The Semi Flat Felled Seam

This is a popular seam with professional canvasworkers and provides a clean, finished look on the top side only.

  • 95% fabric strength
  • Excellent water resistance
  • Only one stitch line exposed to UV
  • Average fabric usage (2 times seam width)
The Semi Flat Felled Seam

The Full Flat Felled Seam

This is the most intricate seam and leaves no raw edges exposed. The Full Flat Felled Seam gives a finished edge on both sides of the fabric. To increase this seam’s UV resistance, sew a row of stitches after placing the fabrics together about one seam width away from the top raw edge. This step is not shown in the video.

  • 100% fabric strength
  • Nearly waterproof
  • Threads exposed to UV
  • Large fabric usage (3 times seam width)
The Full Flat Felled Seam The Full Flat Felled Seam

What is your preferred type of seam? Share your opinions and sewing tips in the comments!