Insulation Materials – Explore Insulation by Material Type

Choosing the right insulation material is just as important as choosing the correct application. Each material performs differently in terms of thermal resistance, fire rating, acoustic properties, moisture control, and overall lifespan. This materials hub helps you understand how each insulation type works, where it should be installed, and which products are available in South Africa.

Whether you’re insulating a ceiling, roof, wall, or floor, the information below will guide you to the most suitable material for your project. Explore the main insulation materials used in South African homes and buildings, and dive deeper into each category to compare performance, benefits, and product options.

Glasswool Insulation

Glasswool is South Africa’s most popular insulation material, offering high R-values, A1 non-combustible fire rating, and excellent acoustic performance. Ideal for ceilings, roofs, walls, and soundproofing applications.
→ Glasswool Insulation

knauf insulation for south african homes
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Knauf Insulation

aerolite insulation for south african homes
Yellow 135mm Aerolite insulation roll installed for thermal and acoustic performance.
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Aerolite Insulation

Factorylite Insulation for factories and warehouses.
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Factorylite Insulation

Polyester Insulation

Made from thermally bonded PET fibers, polyester insulation provides clean, itch-free handling and is commonly used in ceilings and walls. However, it has lower R-values and weaker fire ratings than glasswool.
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isotherm insulation prices for home in south africa
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Isotherm Insulation

Fabufill Insulation prices and installation cost in south africa
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Fabufill Insulation

Polystyrene (XPS) Insulation

Rigid extruded polystyrene boards (like Summit XPS) are used for ceilings, under-slab insulation, floor insulation and certain wall applications. Lightweight, moisture-resistant, and thermally effective.
→ Polystyrene Insulation

Radiant Barriers & Foil Insulation

Reflective foil products—including Sisalation, RadenShield, Scrim Foil and AluCushion—are installed under roofs to reduce radiant heat. These are not bulk insulators but form an essential part of complete roof systems.
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Sisalation Reflective Foil Insulation for south african roofs
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Sisalation

Alububble White reflective foil insulation
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Alububble

scrim foil
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Scrim Foil

Alucushion bubble foil
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Alucushion

Cavity Wall Insulation Materials

Specialized materials like Cavitybatt and Cavitylite are designed for wall cavities and drywall systems, providing both acoustic and thermal performance.
→ Cavity Wall Insulation

cavitybatt insulation with acoustic performance in drywall systems
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Cavitybatt

Why Material Choice Matters

Selecting the correct insulation material ensures:

  • Reliable thermal performance
  • Proper fire safety compliance
  • Long-term durability
  • Best-value installation for your climate zone
  • Reduced heating and cooling requirements
  • Improved indoor acoustic comfort
  • Compliance with SANS 10400-XA

Each material plays a different role, and understanding these differences will help you make the right choice for your home or project.

Learn More About Insulation Materials

Related Insulation Pages

  • Insulation – A full breakdown of insulation types and uses.
  • Applications – See which insulation suits each area of your home.
  • Guides – Expert tips for installation, care, and choosing materials.
  • Comparisons – Compare insulation products and materials side by side.
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