reticulated foam density

Understanding reticulated foam density is the key to building outdoor cushions, boat seats, and filters that drain fast and hold their shape. Unlike standard upholstery foam, reticulated foam has an open, net-like cell structure that lets water and air flow straight through. That is why it is a favorite for patio furniture and marine projects.

Density vs. PPI: What Is the Difference?

Shoppers often mix up these two numbers, but they measure different things:

• Density is the weight per cubic foot and relates to durability and how well the foam resists breaking down over time.
• PPI (pores per inch) describes cell size. Lower PPI means larger, coarser pores and faster drainage; higher PPI feels finer and smoother.

Choosing the Right Foam for Your Project

Outdoor and Marine Cushions

Look for an open cell, quick dry foam that sheds rain quickly and resists mildew. Pair it with breathable outdoor fabric so moisture can escape.

Filtration and Specialty Uses

For filters, match the pore size to the job: coarser foam for pre-filtering, finer foam for catching smaller particles.

Ready to start? Compare the reticulated foam options below to find the right fit for your next project.