By Adalheid Voigt. Industrial. At Friday, January 25th 2019, 01:00:55 AM.
The frame and all the corners should be well padded. Run your hand over them firmly to see. A padded frame will not stick out through the upholstery, it also means less friction for the fabric that is covering the frame. Check the sofa from behind, and pat the center to make sure it isn't hollow.
If the sofa has any metal parts, inspect to see that they are smooth and free of sharp edges. All moving parts on a sofa bed or reclining sofa should clear the fabric completely to avoid tearing. You don't want any injuries to yourself or damage to your upholstery from a faulty mechanism. When you check out the back of your sofa, there should be no bumps or hard spots. Run the palm of your hand over it. This is especially important in a tight back sofa. Not only will bumps and hard spots mar the look of your sofa over a short period of time, they will also feel uncomfortable.
Just as in well-tailored clothing, patterns and stripes should match at the seams. Although it might not catch your eye right away, mismatched patterns or stripes will give you the sense that something is"off". Stripes that match at seams make a sofa look well finished. Patterns should be centered, and all seams and welts should run straight. Uneven welting and seams that are pulled to one side or another mean that the cover was badly tailored.