How Much Backing For A Quilt

How Much Backing for a Quilt: A Comprehensive Guide

Choosing the right backing fabric for your quilt is just as important as selecting the perfect top. The backing supports the entire quilt, impacting its drape, weight, and overall aesthetic. Getting the correct amount is crucial to avoid frustrating cuts and ensure a successful project. This comprehensive guide will delve into the intricacies of calculating quilt backing fabric, factoring in various quilt sizes and fabric widths. We'll also explore fabric choices and helpful tips for a flawless finish.

Understanding Quilt Backing Fabric Requirements

Before diving into calculations, let's establish some fundamental understanding:

Fabric Width: The Foundation of Your Calculation

Most quilting cotton fabrics are 42-44 inches wide. Knowing this width is paramount for accurate calculations. However, variations exist, so always double-check the actual width of your chosen fabric before cutting. Using a slightly narrower fabric will necessitate more yardage.

Quilt Size: The Driving Force

The size of your finished quilt dictates the amount of backing fabric needed. A larger quilt naturally requires more backing than a smaller one. Always work with the finished dimensions of your quilt top, not the dimensions including seam allowances.

Seam Allowances: Adding to the Equation

Quilt backing fabric needs seam allowances to join multiple pieces together, especially when your backing fabric width is less than the quilt's width. A standard seam allowance of ½ inch is typically used. Remember to account for these allowances when calculating your yardage.

Calculating Backing Fabric: Different Approaches

Several methods exist for calculating the backing fabric yardage. We will explore the most common and effective methods:

Method 1: Simple Calculation for Smaller Quilts (Based on Width)

This method is ideal for smaller quilts where the backing fabric width (approximately 44 inches) is larger than the width of the quilt.

1. Determine the Quilt's Width: Measure the width of your finished quilt top.

2. Check Fabric Width: Note the width of your backing fabric. Let's assume it's 44 inches.

3. Calculate Length: If the quilt's width is less than the fabric width, you will only need one piece of backing fabric. The required length is simply the quilt's length plus seam allowance for joining the pieces (typically 6-8 inches) and extra for potential errors.

Example:

A quilt is 50 inches wide and 60 inches long. Since the fabric width is larger than the quilt width, we only need one piece. Therefore, you'd need approximately 60 inches + 8 inches (seam allowance and buffer) = 68 inches of backing fabric. Divide 68 inches by 36 inches (per yard) which equates to approximately 1.9 yards. You would need to purchase 2 yards.

Method 2: Calculation for Larger Quilts (Using Multiple Pieces)

Larger quilts often require piecing the backing fabric together. This method provides a more accurate calculation:

1. Determine the Quilt's Dimensions: Measure both the width and length of your finished quilt top.

2. Calculate the Required Backing Width: Add seam allowance (½ inch on each side) to the quilt's width. For a 70-inch wide quilt, the total width needed would be 70 inches + 1 inch (½ inch on each side) = 71 inches.

3. Calculate the Required Number of Fabric Pieces: Divide the needed backing width by the fabric width (approximately 44 inches). Rounding up to the nearest whole number gives the number of fabric pieces needed. For a 71-inch width and 44-inch fabric, you'd need two pieces.

4. Determine the Fabric Length per Piece: Add seam allowance (approximately 6-8 inches) to the quilt's length for each piece. For a 90-inch-long quilt, each piece needs 90 inches + 8 inches = 98 inches.

5. Calculate Total Yardage: Multiply the length of each piece (in yards) by the number of pieces needed. Remember to convert inches to yards (divide by 36).

Example:

Quilt dimensions: 70 inches wide x 90 inches long. Fabric width: 44 inches.

• Backing width: 70 inches + 1 inch = 71 inches.
• Number of pieces: 71 inches / 44 inches ≈ 2 pieces.
• Length per piece: 90 inches + 8 inches = 98 inches ≈ 2.7 yards.
• Total yardage: 2.7 yards/piece * 2 pieces = 5.4 yards. You would need to purchase 6 yards.

Method 3: Online Quilt Backing Calculators

Several online quilt backing calculators are available. These tools simplify the process, requiring you to input the quilt's dimensions and fabric width. They automatically calculate the required yardage, accounting for seam allowances. These calculators are extremely helpful, especially for more complex quilt sizes and designs.

Choosing the Right Backing Fabric

The type of backing fabric significantly impacts the quilt's final look and feel:

Cotton: The Classic Choice

Cotton is a popular choice due to its softness, affordability, and wide range of colors and patterns. It’s easy to work with and washes well.

Flannel: Cozy and Warm

Flannel provides a luxurious, warm backing, perfect for winter quilts. Its softness adds a cozy touch.

Linen: Textured and Durable

Linen adds a rustic, textured look and offers excellent durability. However, it can be more challenging to work with.

Minky: Soft and Plush

Minky is a super-soft, plush fabric ideal for baby quilts or those requiring extra warmth and comfort.

Silk: Luxurious and Elegant

Silk creates a truly luxurious quilt backing, offering a smooth and elegant drape. However, it's more delicate and expensive.

Tips for Success

• Pre-wash your fabric: Pre-washing minimizes shrinkage after quilting.
• Press your fabric: Pressing removes wrinkles and ensures a smooth, even surface.
• Use a rotary cutter and mat: These tools enable accurate and efficient cutting.
• Consider the quilt's weight: Choose a backing fabric that complements the quilt's weight and drape.
• Account for pattern matching: If your backing fabric has a significant pattern, allow extra yardage for matching.
• Buy extra fabric: It’s always wise to purchase a little extra fabric to accommodate unforeseen errors or adjustments.

Conclusion

Calculating the correct amount of backing fabric is crucial for a successful quilting project. By understanding the different methods and considering the fabric choice, quilters can confidently tackle their projects and achieve a beautifully finished quilt. Remember to meticulously measure your quilt top and choose a calculation method that suits its size and complexity. Always prioritize accuracy and allow for extra fabric to account for potential issues. Happy quilting!