Glasswool Insulation – High Performance Thermal and Acoustic Solutions

Glasswool insulation (also known as fiberglass insulation or glass fiber insulation) is one of the most trusted and widely used ceiling insulation materials in South Africa and around the world. Manufactured from recycled glass and sand, glasswool is designed to trap air within millions of tiny pockets — helping to regulate indoor temperatures and reduce unwanted noise.

At Home Insulations, we supply and install top-quality glasswool insulation products from leading brands like Knauf and Aerolite, serving homeowners, contractors, and developers across Johannesburg, Pretoria, Cape Town, Durban, and beyond.

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What Is Glasswool Insulation?

Glasswool is a soft, flexible material made by spinning molten glass into fine fibres. These fibres are then bonded together to form rolls or batts that can be fitted between ceiling joists, walls, or floors. Known for its excellent thermal resistance (R-value), acoustic absorption, and fire safety, glasswool insulation is ideal for both residential and commercial applications.

Why Choose Glasswool Insulation?

✅ Excellent Thermal Performance – Keeps your home cooler in summer and warmer in winter
✅ Acoustic Comfort – Absorbs sound and reduces noise transfer between rooms and from outside
✅ Non-Combustible – Class A1 fire-rated for safety in ceilings, roofs, and walls
✅ Eco-Friendly – Made from up to 80% recycled glass and fully recyclable
✅ SABS and SANS Compliant – Meets South African building codes and safety standards
✅ Cost-Effective – Offers long-term energy savings and low maintenance
✅ Versatile Applications – Suitable for ceilings, internal walls, cavity walls, and floors

Our Glasswool Brands

1. Knauf Insulation

Made with ECOSE® Technology, Knauf glasswool is soft to the touch, low in VOCs, and free from added formaldehyde — making it one of the most eco-conscious roof insulation options available. Available in 50mm, 75mm, 100mm, 135mm, and acoustic rolls for walls and ceilings.

2. Aerolite Insulation

A household name in South Africa, Aerolite is a yellow glasswool insulation known for its high R-values and Class A1 fire rating. Aerolite offers long-lasting performance and is available in 50mm, 100mm, and 135mm thicknesses.

3. Factorylite Insulation

Factorylite is a high-performance glasswool insulation laminated with foil for superior thermal insulation and radiant barrier performance in industrial and commercial roofs. Naturally non-combustible and SABS-approved, it is available in 50mm, 75mm, 100mm, and 135mm thicknesses for roof and warehouse insulation.

4. Cavitybatt Insulation

Cavitybatt is a semi-rigid glasswool insulation designed for thermal and acoustic performance in cavity wall systems. With a high fire rating, excellent sound absorption, and SANS-compliant R-values, Cavitybatt is ideal for both residential and commercial buildings. Available in 51mm, 63mm, and 102mm thicknesses for optimal wall insulation performance.

Where Can Glasswool Be Installed?

• Residential homes
• Offices and commercial buildings
• Hospitals and schools
• Internal and external walls
• Ceilings and roof spaces
• Between floors for soundproofing

Glasswool is ideal for both new builds and retrofit insulation projects.

Order Glasswool Insulation in South Africa

Looking for reliable, high-performance glasswool insulation? Whether you need fiberglass insulation for your ceiling or glass fiber insulation for walls and partitions, we’ve got you covered.

Request a free quote today or shop online for fast delivery and professional installation across South Africa.