Knauf Insulation Price Price range: R949,53 through R1 423,13Select options
Knauf Insulation Price
Price range: R949,53 through R1 423,13
Knauf Ecose ceiling insulation rolls offer superior thermal and acoustic performance for homes, offices and commercial buildings. Available in 135mm, 100mm, 75mm and 63mm acoustic options, Knauf insulation keeps interiors warmer in winter, cooler in summer and significantly reduces energy costs while improving fire safety and sound control.
Knauf Ceiling Insulation 135mm – Price & Installation Cape Town
High-performance ceiling insulation designed to reduce heat, lower electricity costs, and improve year-round comfort in your home or business.
36+ Years Experience | SANS Approved | Installation Available Across Cape Town & West Coast
Knauf Insulation South Africa – Premium Ceiling Insulation for Maximum Comfort
If you want a serious insulation solution that actually performs, Knauf Insulation is one of the top choices in South Africa.
This is not cheap, low-density material that collapses over time. Knauf uses Earthwool® technology, which delivers:
- Higher thermal performance
- Better sound absorption
- Non-itch, easy handling
- Long-term durability
For homeowners and contractors who understand insulation properly, Knauf sits right at the top of the market.
Why Knauf Insulation Is Different
Most insulation products look the same to the untrained eye. They are not.
Knauf insulation is manufactured using advanced glass mineral wool bonded with a bio-based binder instead of harsh chemicals. That matters.
Key Benefits:
- Excellent thermal resistance (R-values)
- Fire-resistant (non-combustible)
- Superior acoustic performance
- Eco-friendly manufacturing
- No added formaldehyde
If you’re installing insulation once and expecting it to last decades — this is the level you should be looking at.
KNAUF INSULATION – FULL SPECIFICATION GRID
| Specification | 50mm Knauf | 63mm Acoustic Roll | 75mm Knauf | 100mm Knauf | 135mm Knauf |
|---|---|---|---|---|---|
| Thickness | 50mm | 63mm | 75mm | 100mm | 135mm |
| Material | Glass Mineral Wool | Glass Mineral Wool | Glass Mineral Wool | Glass Mineral Wool | Glass Mineral Wool |
| Density (kg/m³) | ±13 kg/m³ | ±14 kg/m³ | ±12 kg/m³ | ±12 kg/m³ | ±12 kg/m³ |
| R-Value (Declared) | 1.25 | 1.50 | 1.88 | 2.50 | 3.38 |
| R-Value Installed | ±1.20 | ±1.45 | ±1.80 | ±2.40 – 2.90 | ±3.20 – 3.78 |
| Thermal Conductivity (λ) | 0.040 W/mK | 0.040 W/mK | 0.040 W/mK | 0.040 W/mK | 0.040 W/mK |
| Roll Length | 19m | 15m | 12.8m | 10m | 7.5m |
| Roll Width | 1200mm | 1200mm | 1200mm | 1200mm | 1200mm |
| Coverage per Roll (m²) | 22.8 m² | 18 m² | 15.36 m² | 12 m² | 9 m² |
| NRC (Acoustic Rating) | ±0.75 | ±0.89 | ±0.85 | ±1.04 | ±1.13 |
| Fire Rating (EUROCLASS) | A1 | A1 | A1 | A1 | A1 |
| Fire Classification (SA) | SANS 10177-5 Class A | SANS 10177-5 Class A | SANS 10177-5 Class A | SANS 10177-5 Class A | SANS 10177-5 Class A |
| Reaction to Fire Standard | EN 13501-1 | EN 13501-1 | EN 13501-1 | EN 13501-1 | EN 13501-1 |
| Combustibility | Non-combustible | Non-combustible | Non-combustible | Non-combustible | Non-combustible |
Knauf Insulation Thickness Options
Choosing the correct ceiling insulation thickness is critical for achieving the best results. Each thickness is suited to different needs, budgets, and building types.
50mm Knauf Insulation
Specifications:
- Thickness: 50mm
- R-value: ± 1.25
- Installed R-value: ± 1.20
- NRC: ± 0.75
- Roll Size: ± 1200mm x 19m (22.80m²)
Summary:
50mm is entry-level insulation. It helps slightly, but it’s not ideal for serious heat control. Use only where the budget is tight or space is limited.
63mm Knauf Acoustic
Specifications:
- Thickness: 63mm
- R-value: ± 1.50
- Installed R-value: ± 1.45
- NRC: ± 0.85–0.95
- Roll Size: ± 1200mm x 15m
Summary:
Designed more for sound absorption than thermal performance. Ideal for offices, apartments, and multi-room buildings.
75mm Knauf Insulation
Specifications:
- Thickness: 75mm
- R-value: ± 1.85
- Installed R-value: ± 1.80
- NRC: ± 0.85
- Roll Size: ± 1200mm x 15m
Summary:
A solid mid-range option. Noticeable improvement in comfort, but still not top-tier performance.
100mm Knauf Insulation
Specifications:
- Thickness: 100mm
- R-value: ± 2.50
- Installed R-value: ± 2.40
- NRC: ± 0.90
- Roll Size: ± 1200mm x 10m (12m²)
Summary:
This is where insulation starts making a real difference. Recommended minimum for most homes in South Africa.
135mm Knauf Insulation
Specifications:
- Thickness: 135mm
- R-value: ± 3.35
- Installed R-value: ± 3.20
- NRC: ± 0.95–1.05
- Roll Size: ± 1200mm 7.5m (9.0m²)
Summary:
This is the best performing option. Maximum heat resistance, excellent sound control, and long-term savings.
If you’re serious about insulation — this is the one.
Fire Rating & Safety
Knauf insulation is non-combustible and meets Class A1 fire rating standards.
That means:
- It does not contribute to fire spread
- It can withstand high temperatures
- It improves building safety
For ceilings, this is non-negotiable.
Acoustic Performance NRC Explained
The Noise Reduction Coefficient (NRC) measures how much sound the insulation absorbs.
- 1.0 = moderate sound reduction
- 1.15 = excellent sound absorption
Knauf insulation performs extremely well, especially in:
- Bedrooms
- Offices
- Multi-unit housing
Knauf Awards & Global Recognition
Knauf is not a small local brand. It’s a global manufacturer with decades of proven performance.
Key Highlights:
- Recognised for sustainable manufacturing
- Awards for eco-friendly insulation technology (ECOSE®)
- Global leader in building materials
- Certified to international quality standards
When you install Knauf, you’re using a product trusted worldwide.
Why Proper Installation Matters
Even the best insulation fails if installed badly.
Correct installation includes:
- Full coverage between ceiling joists
- No compression of insulation
- No gaps or overlaps
- Proper thickness maintained
Installed R-value vs Actual R-value:
- Lab R-value = ideal conditions
- Installed R-value = real-world performance
This is why professional installation is critical.
Knauf Insulation Prices (South Africa)
Prices vary depending on:
- Thickness
- Coverage area
- Installation requirements
Typical Price Range:
- 50mm: Budget range
- 75mm–100mm: Mid-range
- 135mm: Premium
Who Should Use Knauf Insulation?
- Homeowners wanting lower electricity bills
- Builders needing compliance and quality
- Property developers
- Office and commercial buildings
❓ Frequently Asked Questions (FAQ)
1. What is the best thickness for Knauf insulation?
135mm gives the best performance. 100mm is the minimum recommended.
2. How long does Knauf insulation last?
Properly installed, it lasts 40+ years.
3. Is Knauf insulation safe to handle?
Yes. It uses ECOSE® technology and is far less irritating than older insulation types.
4. Does insulation really reduce electricity costs?
Yes. It reduces heating and cooling demand significantly.
5. Can I install Knauf insulation myself?
You can, but professional installation ensures proper performance.
6. Is Knauf better than Aerolite?
Both are good, but Knauf offers improved handling and eco benefits.
7. Does insulation help in summer?
Yes — it keeps heat out, making homes cooler.
8. Will insulation help with noise?
Yes. Especially thicker options like 100mm and 135mm.
9. Is Knauf insulation fireproof?
It is non-combustible, meaning it does not burn.
10. How much insulation do I need?
Depends on your roof size. Measure square meters or request a quote.
IS YOUR HOME HOT IN SUMMER & COLD IN WINTER
Then insulation is not optional — it’s essential.
FIND OUT MORE
Installing Knauf Thermal Insulation in The Roof Space
Knauf Roof Insulation
Knauf Ceiling Insulation Cape Town
100mm Knauf Insulation
