135mm Isotherm
In stock
R695,00 incl. VAT
135mm Isotherm is a polyester ceiling insulation roll produced from recycled PET fibers. It offers a soft, fiber-free material suitable for residential ceilings where a non-irritant product is preferred. This thickness supports year-round comfort by helping regulate indoor temperatures in a simple, low-maintenance way.
Est. Delivery: 14 September – 15 September
135mm Isotherm Insulation
135mm Isotherm is a polyester ceiling insulation material suited to residential homes that prefer a soft, fibre-free product. Made from recycled PET bottles, it contains no loose fibres or chemical irritants, offering a cleaner alternative to traditional fibrous insulation. The material is designed to hold its shape, allowing it to maintain consistent thickness over time and assist with general indoor comfort.
This product is not SABS approved, making it appropriate for households that prioritize a non-irritant, polyester-based insulation option rather than a compliance-driven specification.
Key Features
- Soft, non-irritant polyester fibres
- Made from recycled PET bottles
- Fibre-free composition
- Hydrophobic material with low moisture absorption
- Retains loft without collapsing
- Consistent insulation comfort
- Suitable for homes where clean, non-fibrous insulation is preferred
- Lightweight and easy to position in ceiling cavities
Typical Applications
- Residential ceiling insulation
- Homes focusing on non-irritant materials
- Bedrooms, living rooms and family areas
- Houses occupied by sensitive or allergy-prone individuals
- Eco-conscious building projects using recycled materials
Why Choose 135mm Isotherm?
Choose this thickness if you want:
- A fiber-free ceiling insulation material
- A soft polyester product made from recycled PET
- A roll that maintains its shape over time
- Stable insulation comfort for year-round use
- A cleaner alternative to fibrous insulation products
Product Specifications
- Material: Polyester (recycled PET)
- Thickness: 135mm
- Density: 11.5kg/m³
- Roll Width: 1,200mm
- Roll Length: 5,000mm
- Total Coverage: 6m² per roll
- Product R-Value: 3.14
- Climatic Zones: 2 & 6
- Fire Classification: B/B1/2 classification
- SABS Approved: No
- Durability: Retains loft and structure over extended periods
135mm Isotherm Insulation Overview
135mm Isotherm provides a fiber-free option for residential ceilings where a soft, non-irritant material is preferred. Its recycled PET construction and stable loft help support steady indoor comfort while offering a cleaner insulation choice suited to a wide range of home environments.
Where to Go Next
- Return to the Insulation Overview → Insulation Guide
- Explore insulation by brand → Brands
- Browse all Isotherm products → Isotherm
- Compare ceiling insulation options → Ceiling Insulation
Delivery Information
At Insulation Warehouse, we provide fast, reliable delivery across our service network so you get the insulation you need without delays. We are an online insulation store and do not operate as a walk-in retail outlet. All orders are placed online, processed immediately, and delivered directly to your home, site, or business.
Delivery Timeframes
- Most standard orders are delivered within 1–3 business days
- Fast dispatch from our storage facilities
- Orders are shipped as soon as payment is received
Specialized Product Lead Times
A few specialized or less common items may require additional preparation before dispatch. These can include:
- Industrial densities
- Custom-sized or made-to-order insulation
- Foil-faced products
- Commercial or non-standard rolls
When these items require extra time, we’ll let you know the expected delivery window.
Delivery Network
We deliver insulation products throughout:
- Johannesburg
- Centurion
- Pretoria
These areas form our primary delivery network, ensuring quick turnaround times for homeowners, installers, and contractors.
We can also deliver to surrounding suburbs — just send us your address if you’re unsure.
Delivery Process
- Orders leave our storage facility once paid for in full
- Delivery updates and timelines are provided
- Large orders may arrive on pallets to ensure product protection
Fast, Reliable Service
Our goal is to provide the quickest, most convenient delivery service possible. Whether you’re insulating a home, office, or development, our streamlined logistics ensure your materials arrive safely and on time.
