How modular sofas are built from separate sections, how the pieces connect and rearrange, and what to check on frames, cushions, covers and fit before buying.
Why separate sections make delivery easier, and how to measure doorways, hallways, stairs and turns so a modular sofa actually fits in before you order.
Compare straight, L-shaped, U-shaped and chaise sectional layouts against room size, walking paths and how your household actually sits and uses the room.
How seat depth and cushion filling such as foam, feathers and fiber affect posture, lounging comfort and how a modular sofa holds its shape over the years.
How washable and replaceable covers help a modular sofa last longer and cope with spills, plus what to check about fit, fabric, care labels and replacement.
What corner units, armless seats, end seats, ottomans and chaises each do in a modular sofa, and how different combinations change comfort and floor footprint.