high density foam 1.8 density
If you're rebuilding a sofa seat, padding a dining bench, or making cushions from scratch, high density foam 1.8 density is one of the most dependable cores you can choose. The 1.8 rating means the foam weighs about 1.8 pounds per cubic foot, a common upholstery standard that balances comfort with lasting support.
Why 1.8 Lb Density Foam Works So Well
Density describes how much material is packed into the foam, not how soft or firm it feels. A 1.8 lb density foam holds its shape better than lighter, lower-density options, so seats are less likely to flatten or sag with daily use.
Popular Uses
- Replacement cushion foam for sofas and loveseats
- Seat cushion foam for dining chairs and stools
- Foam for bench cushions, window seats, and banquettes
- Headboards, ottomans, and other upholstery projects
What to Look For
Check the firmness rating alongside density, since two foams of the same density can feel very different. Firm cushion foam suits frequently used seats, while a softer feel suits backs and lounging pieces. Measure your cushion's length, width, and thickness carefully, and consider wrapping the foam in batting for a fuller, smoother look under your fabric.
Ready to start? Browse our high density foam options below to find the right fit for your project.
