upholstery foam 1.8 44 ild

If your sofa seats sag or your dining chairs feel flat, upholstery foam 1.8 44 ILD is a dependable fix. This combination pairs a durable 1.8-pound density with a firm 44 ILD rating, so the cushions you build hold their shape and give steady support for everyday sitting.

What 1.8 Density and 44 ILD Mean

Density is the foam's weight per cubic foot and is a good signal of how long it will last. A 1.8 density foam is a solid choice for furniture that sees regular use. ILD (indentation load deflection) measures firmness. A 44 ILD foam sits on the firm side, so you sit on the cushion rather than sinking into it.

Best Uses for Firm Upholstery Foam

• Replacement cushion foam for sofas and loveseats
• Dining chair pads and bench seats
• Window seats, banquettes and built-ins
• RV and boat dinette seating

Tips Before You Buy

Measure your cushion covers carefully and choose a thickness that matches how the piece is used. Thicker slabs work well as foam for sofa cushions, while thinner pieces suit chair pads. For a softer surface and a fuller, rounded look, wrap the foam in polyester batting before sliding it into the cover.

Ready to rebuild your seating? Browse the high density seat cushion foam options below to find the right fit for your project.