upholstery foam 90 ild

If your cushions keep flattening out, upholstery foam 90 ILD may be the fix. A 90 rating sits at the very firm end of the scale. That makes it a strong choice for seating that has to hold its shape through heavy, everyday use.

What Does 90 ILD Mean?

ILD stands for indentation load deflection. It measures how much force it takes to compress foam by a set amount, so higher numbers mean firmer foam. Most soft and medium foams fall well below 90. That puts 90 ILD foam firmly in the extra-firm category.

Where Extra-Firm Foam Works Best

• Window seats, banquettes, and storage bench cushions
• Dining chair seats and high-traffic commercial seating
• Boat, RV, and camper cushions that need lasting support
• Firm base layers under a softer comfort foam

Tips for Choosing Your Foam

Pick a thickness to suit the job. Thinner foam is a good fit for chair pads, while thicker foam suits benches and daybeds. If the surface feels too stiff on its own, wrap it in polyester batting to soften the top and fill out your fabric cover neatly.

Ready to build cushions that last? Browse our selection of high ILD upholstery foam below to find the right fit for your project.