135mm Knauf Earthwool Ceiling Insulation Roll
In stock
Original price was: R956.00.R899.00Current price is: R899.00.
135mm Knauf is engineered for high performance, delivering a product R-value of 3.38 m²·K/W and an installed R-value of 3.76 m²·K/W.
- Thickness: 135mm
- Coverage: 9m2
- Length: 7,500m
- Width: 1,200m
- R-value: 3.38
- Installed R-value: 3.78
- Density: 12Kg
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135mm Knauf Insulation
The 135mm Knauf Ceiling Insulation is a premium-quality glasswool product manufactured using innovative Ecose® Technology. This formaldehyde-free, soft-to-touch insulation delivers excellent thermal performance and meets SANS 10400-XA energy efficiency standards across all South African climate zones.
When installed correctly, 135mm Knauf helps maintain indoor comfort year-round — keeping homes up to 6 °C cooler in summer and warmer in winter — while reducing the need for heating and cooling systems.
135mm Knauf Specifications
| Specification | Details |
|---|---|
| Thickness | 135mm |
| Width | 1.2m (1200mm) |
| Length | 7.5m (7500mm) |
| Coverage | ± 9 m² |
| R-Value | 3.38 m²·K/W |
| Installed R-Value | 3.78 m²·K/W |
| Thermal Conductivity | ~0.040 W/m·K |
| NRC | 1.13 |
| Fire Rating | Class A/A 1/1 – Fully non-combustible |
| Reaction to Fire | Euroclass A1 to BS EN 13501-1 |
| Compliance | SANS 10177-Part 5, SANS 10177-Part 3, EN 13501-1 |
| Certification | SABS approved |
| Material | Glasswool (up to 80% recycled content) |
| Density | ~12kg/m³ |
| Durability | Designed to last ± 50 years without losing performance |
| Packaging | Supplied compressed — expands to full thickness in 24–48 hours |
Benefits of 135mm Knauf
- Outstanding Thermal Insulation
With a product R-value of 3.38 and an installed R-value of 3.75, this insulation significantly reduces heat transfer, helping maintain stable indoor temperatures throughout the year. - Superior Acoustic Performance
A Noise Reduction Coefficient (NRC) of 1.1 means it’s excellent at dampening sound, making living spaces quieter and more comfortable. - Fire Safety You Can Trust
Fully non-combustible and tested to both SANS and Euroclass standards, ensuring maximum safety for residential and commercial applications. - Environmentally Responsible
Manufactured with up to 80% recycled glass content, helping reduce environmental impact while delivering high-quality performance. - Long-Lasting Investment
Designed to last up to 50 years without a drop in performance, making it a once-off solution that pays for itself in comfort and energy savings.
Installation Notes
- Fully meets SANS 10400-XA requirements for all South African climate zones
- Easy to lift, carry, and position thanks to its low weight
- Soft, user-friendly surface minimizes irritation during fitting
- Suitable for both professional installers and confident DIY users (protective clothing still advised)
Where 135mm Knauf Works Best
- Perfect for colder climates or homes that demand high thermal efficiency
- Suited for properties where achieving top-tier R-values is essential for compliance
- Excellent choice for spaces that require effective sound absorption
- A smart option for households focused on lowering energy usage and utility bills over the long term
Related Knauf Products
- 200mm Knauf — premium thickness for exceptional year-round energy savings.
- 135mm Knauf — superior R-value for colder climates and strict building compliance.
- 100mm Knauf — efficient insulation where installation depth is restricted.
- 75mm Knauf — perfect for retrofits or boosting existing insulation levels.
- 50mm Knauf — ideal for layering or use in compact ceiling spaces.
Upgrade Your Home Today
We supply and install 135mm Knauf in Johannesburg, Centurion, Pretoria, Durban, and Cape Town. Get your personalized quote today and start enjoying year-round comfort, fire safety, and long-term energy savings.
Delivery Information
At Home Insulations, we take pride in delivering high-quality insulation products, including XPS ceilings and various insulation materials, directly to your doorstep. To ensure that your order is delivered efficiently and safely, we have the following guidelines in place:
1. Delivery Process for Insulation Products
- For insulation products, we deliver stock orders within 3 to 5 days from the time of payment. This ensures quick and efficient delivery to meet your project timelines.
- There is a minimum order of 5 rolls required for product delivery. Please ensure your order meets this minimum quantity to arrange delivery.
- Delivery is charged separately and based on your distance (km) from us.
2. Delivery Process for XPS Boards
- XPS ceiling boards are delivered via large truck to ensure safe and secure transport. Our team is equipped to handle deliveries to locations in Johannesburg, Pretoria, Centurion, Durban, and Cape Town.
- Please note, XPS boards are cut to order, meaning we do not keep stock of pre-cut boards. Each order is processed and custom-cut based on your specific requirements, ensuring you receive the right size and thickness for your project.
- To guarantee delivery for the following week, all payments must be received by Thursday of the current week. This allows us enough time to prepare your order and schedule the delivery.
- Delivery is charged separately and based on your distance (km) from us.
Please note: that all ceiling boards are cut to order based on your specific requirements. As a result, we are unable to accept returns or offer refunds for products once they have been cut. We highly encourage you to double-check your measurements and specifications before placing your order to ensure the items are exactly what you need. If you have any questions or concerns about your order before it's processed, feel free to contact us, and we’ll be happy to assist you. Thank you for your understanding.
Delivery Locations
- We deliver to areas across South Africa, including Johannesburg, Pretoria, Centurion, Durban, and Cape Town. If you're outside these areas, please contact us for specific delivery arrangements.
If you have any questions or need assistance with your delivery, please don’t hesitate to reach out to our customer service team.
How To Order?
- Visit our online shop for insulation prices and stock availability.
- Add your product and quantity of rolls to the cart.
- Fill out your delivery address and contact details.
- We will email you the invoice after the order has been placed.
- Once we have received your payment we arrange delivery
Business Hours
- MON: 8:00AM - 4.00PM
- TUE: 8.00AM - 4.00PM
- WED: 8.00AM - 4.00PM
- THU: 8.00AM - 4.00PM
- FRI: 8.00AM - 4.00PM
- SAT: CLOSED
- SUN: CLOSED
For more information Contact Us
