Coasters on couches: why they fail
Coasters reduce moisture on hard surfaces. On couches, the core issue is tilt + wobble from soft surfaces.
Definition: Coasters don’t solve couch spills because the couch problem is stability, not just protection.
What coasters do well
- Protect hard surfaces
- Catch condensation
What coasters don’t do
- Prevent tilt on cushions
- Stabilize on seams
- Reduce bump sensitivity
Better approach
Use a method designed for soft surfaces and validate with the couch seam test.