upholstery foam 1.8 36 ild

If your sofa cushions have gone flat or your dining chairs need new life, upholstery foam 1.8 36 ILD is one of the most dependable choices for everyday seating. It balances comfort and support, so it stays useful through years of sitting, lounging and family use.

What the Numbers Mean

1.8 Density

The 1.8 refers to weight per cubic foot, a common measure of foam quality. A 1.8 density foam is widely used for residential furniture because it tends to hold its shape and resist breaking down better than lighter, budget grades.

36 ILD

ILD (Indentation Load Deflection) describes firmness. A 36 ILD foam generally falls in the medium-firm range, offering supportive seating without feeling hard.

Where It Works Best

• Sofa and loveseat seat cushions
• Dining and kitchen chair pads
• Bench, window seat and banquette cushions
• Replacement cushion foam for worn furniture

Tips for Choosing

Measure your existing cushion's length, width and thickness, and consider adding a layer of batting for softer edges and a smoother fit inside your cover fabric.

Ready to start your project? Browse the upholstery foam options listed below to find the right size for your cushions.