What I use: stud/joist finder, drill/driver, appropriately sized lag screw eye bolt or swing hanger plate, pilot bit, swivel (360°), porch-swing spring (for comfort), rated chain or low-stretch rope, and locking links/carabiners.
- 1
Find the joist and center it. I verify with a small test hole if I'm not 100% sure. Older houses lie. Vaulted ceilings often hide beefy beams; flat ceilings usually have joists 16" or 24" on center.
- 2
Mark your seat height & clearances. Loaded seat height should land around 18–24" above the floor. Give yourself at least a couple of feet of free swing space fore/aft and a foot or more on the sides (more is better).
- 3
Drill the pilot. Proper pilot size matters—too small risks splitting or snapping a lag; too big hurts holding power. I match the fastener manufacturer's pilot chart and drill straight into the joist's center.
- 4
Install the hanger. For a shouldered eye lag, I hand-start then wrench it snug so the shoulder beds against the wood. For a swing-hanger plate, I drive all lags fully.
- 5
Build the chain. My order is: hanger → spring → swivel → chain/rope → chair. That spring smooths the ride and the swivel prevents twist-up.
- 6
Proof-load and tune. Sit gently, listen/feel, then adjust chain length to your perfect height.
Ben's tip: If you're spanning drywall/plaster with a decorative cover plate, cut it cleanly so the hardware bears on wood, not plaster.