Upholstery Tip #25: Springs Go Under
Antonia MarinoWhen it comes to seating support, coil (or biconical) springs are a classic choice. But before they can do their job, they need a solid foundation—one that keeps them firmly in place for years to come.
A Firm Base is Key
These springs typically sit on a base of tightly stretched jute webbing, fixed underneath the frame. The goal? A base so firm that it won’t sag under pressure. To achieve this, flip the chair upside down and use a web stretcher to pull the jute webbing taut. When tapped, it should sound like a drum—this tells you it's tight enough to support the springs properly.
Securing the Springs
Once the webbing is in place, the coil springs are attached using strong jute twine and a curved spring needle. Sewing them down prevents shifting and ensures they stay upright when the seat is in use.
This solid foundation is just the beginning—once the springs are secured, the next step is tying them into position (but that’s a topic for another day!).
