How can we help you? How does the stair lift attach to the stairs? 1 out of 3 found this helpful Our stair lifts install directly to the treads of your stair case, not the wall. There is no need to reconstruct or reinforce walls in order to install. Was this helpful? Yes (1) No (1) Category: General Related Questions Is the stair lift noisy? How much weight can a stair lift hold? What happens if my stair lift breaks down? When do I need a stair lift?