What is a Barn Quilt? A barn quilt is a piece of wood that is painted to look like a quilt block. Even though the name implies that an entire quilt is painted on the wood, it is only a single quilt block. These painted blocks are hung on the exterior of a barn, house, garage, or any other building. Barn quilts are simple shapes painted in bright colors so they may be seen from a distance. Dimensions: 2-1/2" by 2-1/2" square. SMSBQ502A features red, blue and white "pieces" based on the Churn Dash pattern.