Seam allowance

Definition

Seam allowance is the distance between the seam line and the edge of the fabric, providing extra material for sewing seams. This space is crucial for ensuring that garments can be constructed correctly and allows for adjustments during fitting. The size of the seam allowance can vary depending on the type of garment and construction techniques used, impacting how seams are finished and the overall fit of the final piece.

5 Must Know Facts For Your Next Test

1. Standard seam allowances usually range from 1/4 inch to 5/8 inch, depending on the type of garment being constructed.
2. Seam allowances can be adjusted based on design details, such as darts or pleats, affecting how closely a garment fits the body.
3. When creating technical flats or specification sheets, it's important to note seam allowances so that manufacturers can accurately replicate designs.
4. Using a consistent seam allowance helps ensure that pattern pieces fit together correctly, leading to a more polished final product.
5. In flat pattern making, understanding how to alter seam allowances can help in adjusting garment sizes and shapes efficiently.

Review Questions

• How does seam allowance impact the construction and fitting of a garment?
  • Seam allowance plays a critical role in garment construction by providing extra fabric needed for sewing seams. This allowance not only ensures that pieces fit together properly but also allows for adjustments during fitting. If the seam allowance is too small, it may result in seams pulling apart or not providing enough room for alterations, while an overly large seam allowance can lead to bulkiness and affect the garment's silhouette.
• Discuss how variations in seam allowance sizes can influence the finished look and functionality of different types of garments.
  • Variations in seam allowance sizes can significantly affect both the appearance and functionality of garments. For example, a smaller seam allowance might be used in lightweight fabrics for sleek silhouettes, while a larger seam allowance can be beneficial for heavier fabrics where additional strength is needed. Additionally, larger allowances allow for more extensive alterations if needed. Therefore, selecting appropriate seam allowances is essential for achieving the desired fit and style.
• Evaluate the importance of accurately indicating seam allowances on technical flats and specification sheets in the fashion industry.
  • Accurately indicating seam allowances on technical flats and specification sheets is crucial in the fashion industry because it ensures that manufacturers produce garments that meet design specifications. Seam allowances affect how patterns are cut and sewn together, directly influencing fit and finish. If these allowances are not clearly marked, it can lead to miscommunication during production, resulting in poorly fitting garments that may not match the designer's intent, ultimately affecting customer satisfaction and brand reputation.

Related terms

seam: A seam is a line where two pieces of fabric are stitched together, forming the structure of a garment.

notch: A notch is a small cut made in the seam allowance to assist in aligning pieces or indicating where to fold or stitch.

bias: The bias is the diagonal direction of the fabric, which allows for stretch and is often used to create curved seams or hems.