Foam comes in many forms, but the two most common types are open cell and closed cell. Understanding how they differ helps you choose the right foam for your project, whether you’re replacing sofa cushions, building sound panels or insulating a workspace.
What is Open Cell Foam
Open cell foam is lightweight, breathable and soft. Its structure allows air to flow through, making it ideal for cushions, mattresses, packaging and acoustic panels. Because it compresses easily, it’s comfortable and supportive – perfect for upholstery, seating and bedding.
- Excellent airflow and comfort
- Ideal for indoor use
- Available in various densities and firmness levels
Explore our Open Cell Foam Sheets for indoor, outdoor and acoustic applications.
What is Closed Cell Foam
Closed cell foam has a dense, watertight structure that prevents air or moisture from passing through. This makes it perfect for insulation, waterproofing and impact protection in construction, marine and industrial projects.
- Water and chemical resistant
- Provides excellent insulation
- Durable and resilient under pressure
Browse our Closed Cell Foam Sheets for long lasting, weather resistant performance.
Choosing the Right Type
If you need softness and breathability, go for open cell foam. For durability, rigidity or moisture protection, closed cell foam is the right choice.
Not sure what to use? Contact our Sydney team for expert advice and custom recommendations.
CutFoam.com.au – Australia’s trusted supplier of foam cut to size and custom foam solutions.