100mm Isotherm
In stock
R599.00
The 100mm Isotherm Insulation provides dependable thermal performance with an R-value of 2.33 m²·K/W.
- Thickness: 100mm
- Coverage: 7.2m²
- Length: 6,000mm
- Width: 1,200mm
- R-value: 2.33
- Installed R-value: 2.73
- Density: 10kg/m³
For more information, Contact Us
100mm Isotherm Insulation
The 100mm Isotherm is a lightweight polyester ceiling insulation made from recycled PET plastic bottles. It’s designed for use in South African climate zones 3 and 5, offering a safe-to-handle, eco-conscious alternative to traditional glasswool.
With a product R-value of 1.57 m²·K/W and an installed R-value of 1.97 m²·K/W, it provides moderate thermal control for milder climates, reducing heat gain in summer and slowing heat loss in winter. Its soft texture and fibre-free composition make it comfortable to work with, even in tight roof spaces.
Certification Update
Isotherm insulation is no longer certified by the South African Bureau of Standards (SABS). The product did not pass updated compliance requirements, so it is not suitable for projects where SABS approval is mandatory.
If your project requires fully certified materials—such as government buildings, public institutions, or regulated commercial projects—consider alternatives like Knauf or Aerolite, which still carry SABS approval.
100mm Isotherm Specifications
| Specification | Details |
|---|---|
| Thickness | 100mm |
| Width | 1,200mm |
| Length | 6,000m |
| Coverage | 7.2m² |
| Density | 8.5kg/m³ |
| R-Value | ~ 2.33 m²·K/W |
| Installed R-Value | ~ 2.73 m²·K/W* |
| NRC | ≥ 0.75 |
| Fire Classification | B/B1/2 (B-class) |
| Compliance | SANS 10400-XA compliant for Durban |
| Material | 100% polyester from recycled PET bottles |
| Vapour Resistivity | Low – promotes roof space ventilation |
Benefits of 100mm Isotherm
- Cost-effective – a budget-friendly insulation solution for mild to moderate climates.
- Safe installation – non-irritant, dust-free, and non-allergenic.
- Limited acoustic improvement – NRC ≥ 0.75 can help lessen internal noise transfer.
- Eco-friendly – manufactured from recycled plastic bottles.
- Long service life – resists deterioration, moisture damage, and pest infestation.
Installer’s Advice
- Ideal for Zones 3 & 5, where building regulations require lower minimum R-values.
- Can be used as a top-up layer over existing insulation in cooler zones.
- Always install without compression to maintain thermal performance.
- Pair with a radiant barrier in hotter regions to reduce summer heat gain.
Related Isotherm Options
- 145mm – maximum thermal performance for Zones 1 & 4.
- 135mm – suited for Zones 2 & 6.
- 100mm – best for Zones 3 & 5.
- 75mm – commonly used for retrofits and topping up.
- 50mm – topping up or targeted insulation applications.
- 40mm – topping up in specific areas or niche uses.
Upgrade Your Ceiling
We supply and install 100mm Isotherm insulation across Johannesburg, Centurion, and Pretoria. Contact us for a competitive quote and professional installation to improve comfort and energy efficiency in your home.
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