Aerolite vs Fabufill Insulation - product comparison guide

Aerolite vs Fabufill – Which Insulation is Better?

When comparing Aerolite vs Fabufill, it’s not just about price — it’s about thermal performance, fire safety, noise reduction, lifespan, and how comfortable the insulation is to work with.

Both are popular ceiling insulation products in South Africa. Aerolite stands out for its superior thermal and acoustic performance, A1 fire rating, and lower price, while Fabufill is great for non-itch insulation during installation.

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Aerolite vs Fabufill: Quick Comparison Table

Feature	Aerolite	Fabufill
Thermal Performance	★★★★★	★★★★☆
Noise Control	★★★★★	★★★☆☆
Fire Safety	★★★★★ (A1 rating)	★★★☆☆ (B-class)
Density & Weight	★★★★★ (heavier mass)	★★★☆☆ (lighter)
Non-Itch Handling	★★☆☆☆ (itchy during install)	★★★★★ (completely non-itch)
Eco-Friendliness	★★★★☆ (recycled glass)	★★★★☆ (recycled PET)
Typical Lifespan	30–50+ years	30–40 years
Cost Efficiency	★★★★★ (more budget-friendly)	★★★☆☆ (higher price)

Thermal Performance: R-Value Comparison

Aerolite insulation, made from glasswool, delivers excellent thermal resistance (higher R-values) for its thickness. This means your home stays cooler in summer and warmer in winter, reducing the need for heaters and air conditioners.

Fabufill insulation, made from thermally bonded polyester, also performs well but needs to be thicker to get closer to Aerolite’s R-value. If your main concern is keeping indoor temperatures stable, Aerolite is always the stronger choice.

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Density and Effectiveness

While Aerolite and Fabufill can look similar in thickness, Aerolite is much heavier by weight and has a denser internal structure. Its tightly packed glass fibres trap air and block both heat flow and sound far more effectively.

Fabufill is lighter, made from larger polyester fibres. It doesn’t insulate quite as well against heat or noise, but it remains non-itch, stays fluffy, and keeps its shape over time.

Check out our extensive lineup of glasswool and polyester solutions to find what works best for your home.

Fire Safety Ratings

Aerolite is completely non-combustible (A1 Euro fire rating). It won’t contribute to spreading flames, making it one of the safest ceiling insulation options on the market.

Fabufill has a B-class rating, meaning it’s still flame-retardant but not fully non-combustible. If fire safety is your top concern, Aerolite clearly comes out ahead.

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Noise Control

Aerolite’s heavier mass and interwoven glass fibres do a much better job of absorbing sound waves, significantly reducing noise from neighbours, traffic, or rain on tiled roofs.

Fabufill’s lighter polyester build provides basic noise control, but allows more external sounds to come through. If a quieter home is important to you, Aerolite is definitely the better pick.

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Handling and Non-Itch Comfort

Fabufill’s biggest selling point is that it’s non-itch, meaning it’s comfortable to install without any protective clothing. Installers and homeowners appreciate the soft handling, especially if you’re sensitive to fibrous materials.

Aerolite, like most glasswool products, can be itchy to work with, so it’s installed using protective gear. However, once it’s laid above your ceiling boards, it’s completely sealed off and perfectly safe in your home.

Lifespan and Durability

Both products are designed to last decades.

Aerolite typically lasts 30–50+ years with proper installation and no roof leaks.
Fabufill generally lasts around 30–40 years, maintaining its shape and fluff over time.

SABS Approval Rating

Both products are fully SABS approved, which means they meet South African safety and performance standards.

Aerolite: Fully SABS certified, giving peace of mind on compliance and quality.
Fabufill: Also SABS approved, offering a non-itch, certified option.

Both Aerolite and Fabufill meet stringent SABS requirements — you can choose based on performance vs non-itch preference, without worrying about missing certification.

Price Comparison

Aerolite generally costs less per m² than Fabufill, while still providing better thermal resistance, higher fire ratings, and noise reduction. Fabufill’s higher price mainly comes from its non-itch, easy-to-handle comfort.

Which Should You Choose?

If you want the best thermal insulation, noise reduction, fire safety and long-term cost savings, Aerolite is hard to beat. It insulates more effectively for both heat and sound, costs less, and has the highest fire safety rating.

If your top priority is a product that’s non-itch and comfortable to install, Fabufill is a solid alternative, still providing good thermal performance with a soft, irritation-free feel.

Get Expert Help Comparing Aerolite vs Fabufill

Still deciding which insulation suits your ceiling best? We supply and install both Aerolite and Fabufill across Johannesburg, Pretoria, Cape Town and Durban.