high density foam

Why Choose High Density Foam?

When a cushion goes flat after a single season, the culprit is usually the filling. High density foam packs more material into every cubic foot, so it holds its shape, resists sagging and gives seats a supportive feel that lasts. It's the go-to core for upholsterers and DIY sewists who want their work to look crisp for years.

Where to Use It

• Dining chair pads and replacement seat cushion foam
• Window seats, banquettes and foam for bench cushions
• Headboards, ottomans and other upholstery foam projects
• Patio or boat seating where you need outdoor cushion foam that keeps its shape

What to Look For

Density vs. Firmness

Density describes how much the foam weighs per cubic foot and is a good predictor of durability. Firmness describes how it feels when you sit down. A firm foam cushion suits seats that see daily use, while softer, dense foam padding works well for backrests.

Thickness and Wrapping

Choose a thickness that fits your frame and comfort needs, and consider wrapping the foam in batting for rounded edges and a smooth fit under your fabric.

Find Your Foam

Ready to build cushions that last? Browse our high density foam selection below and pick the right fit for your next project.