Guide to Batting for Quilts
Battings can be purchased in natural or synthetic fibers, depending on the look you wish to achieve and your personal preference.
Natural Fiber Batts
Cotton
Wool

Moderately flat
Warm
Easy to hand quilt
Slightly higher cost
Wears well
Silk

Very flat
Drapes beautifully
Warmth without weight
Expensive
Synthetic & Combo Batts
Polyster

Puffy to very puffy
Warm
Loft without weight
Least expensive
Poly/Cotton

Figuring Batt Size

If you are making a quilt for a bed, the finished size is determined by the measurements of the bed and mattress.
Measure the width and length of the top of the bed with the blankets and sheets you plan to use with the quilt.
For a pillow tuck, add 10" to 20" to the length depending on the size and fullness of your pillows.
Determine the drop length for your quilt. Add twice the drop length to the quilt width (2 sides of the bed) and 1 drop length to the length (foot of the bed).
Helpful Hints
Average amount of quilting with low or medium loft batting = 2-3% shrinkage.
Average amount of quilting with high-loft batting = 5-6% shrinkage.
When figuring batting and backing sizes, add 8" to the dimensions of the quilt top to allow for shrinkage during the quilting process. If you are having your quilt machine quilted, check with your machine quilter to see what amount they prefer for their machine.
Keep the batting package (or packaging information). It will give you lots of information such as washing instructions and how closely your chosen batt should be quilted. The name of the batting, fiber content, and washing instructions should be included on the quilt label for future reference.