Everyday thermal comfort
The glasswool layer resists heat flow in both directions. That makes well-insulated rooms less vulnerable to roof-space heat in summer and helps retain indoor warmth during cooler weather.
ECO FRIENDLY HOMES / AEROLITE SOFT TOUCH
100mm Aerolite Insulation
More comfort.
Less heat through the ceiling.
100mm Aerolite Insulation is a flexible Soft Touch glasswool blanket designed for ceiling upgrades and suitable new installations. Each roll covers a nominal 7.2 m², with material thermal resistance of R-2.50. Calculate your required rolls and request current pricing without going through a checkout.
Real roll quantities · Enquiry only · Pricing confirmed by quote
ISOVERSOFT TOUCH
7.2 m²Coverage per roll
2.50Material R-value · m²·K/W
6 × 1.2 mUnrolled dimensions
A1Non-combustible glasswool
BETTER CEILING COMFORT STARTS HERE
What makes 100mm Aerolite Insulation worth considering?
A ceiling can allow significant heat transfer between living spaces and the roof cavity. 100mm Aerolite Insulation helps limit that transfer, keeping indoor conditions more stable as outdoor temperatures change. It works passively once fitted and does not require electricity to deliver its insulating effect.
At 100 mm thick, the blanket offers a balance between thermal resistance and roll coverage. The right thickness still depends on your building's energy zone, insulation already in place and whether the work is a retrofit or new construction. The declared R-value of 100mm Aerolite Insulation must never be mistaken for a guarantee that an entire roof assembly meets a particular regulation.
Practical roll coverage
With 7.2 m² of nominal coverage per roll, 100mm Aerolite Insulation lets you estimate quantities by floor plan or measured ceiling area. Our live calculator rounds up to whole rolls.
Sound absorption
The fibrous construction provides useful acoustic absorption inside the ceiling void. It is not a standalone soundproofing system; ceilings, walls, gaps and other construction details also affect noise transmission.
FLEXIBLE. RESILIENT. EASY TO PLAN.
A Soft Touch blanket that works with the roof space.
The 100mm Aerolite Soft Touch product uses a resilient glasswool blanket packed into compact rolls. After unpacking, Isover advises allowing 24–48 hours for the product to recover its thickness. This is useful when planning transport, handling and installation.
The wording 100mm Soft Touch Aerolite describes the same product variation. The blanket can be trimmed for the spaces between timber members and laid to form a continuous insulating layer. Handle it carefully, keep it dry and avoid packing it down to make it fit underneath services or obstructions.
100mm Aerolite Insulation can be useful for replacing inadequate or damaged ceiling coverage, but assessing old material first is important. It may also form part of an engineered multi-layer solution where the design calls for it. Confirm required performance before selecting thickness solely on price.
BUY THE RIGHT SPECIFICATION
100mm Aerolite Insulation specifications
Knowing the true roll dimensions avoids ordering too little material. Isover lists this product variation as 6,000 mm long and 1,200 mm wide, giving 7.2 m² of nominal area per roll.
DECLARED MATERIAL R-VALUE2.50 m²·K/W
The 2.50 figure refers to the insulation material itself. Whole-roof performance depends on the remaining layers, thermal bridges and installation. For many new-build situations, 135 mm provides a higher material R-value.
Important: check your South African energy zone. Isover identifies the 100 mm variation for energy zone 5H (high humidity). In other zones, a different thickness may be required. This is not a blanket claim that 100 mm meets every new-building requirement.
| Product name | Aerolite Soft Touch |
|---|---|
| Manufacturer | Isover / Saint-Gobain |
| Nominal thickness | 100 mm |
| Length × width | 6,000 × 1,200 mm |
| Roll coverage | 7.2 m² |
| Material R-value | 2.50 m²·K/W |
| Product SKU | 21115 (Isover listing) |
| Material type | Flexible glasswool blanket |
| Fire classification | A1 to SANS 53501-1, per Isover |
| Intended use | Thermal and acoustic ceiling insulation |
Specifications are manufacturer-published and may be updated. Confirm product identification, supply requirements and any applicable compliance criteria before ordering.
LIVE ROLL QUANTITY PLANNER
Calculate 100mm Aerolite Insulation by m².
Enter the ceiling area you want to cover. One roll of 100mm Aerolite Insulation provides 7.2 m² before site cuts, overlaps or unavoidable offcuts. The calculator adds an optional allowance and rounds up to the next whole roll; you can change the final roll quantity in the quote form.
For a 100 m² ceiling with 100mm Aerolite Insulation, you need 14 rolls without an allowance (100.8 m² nominal coverage). Allowing 5% increases the estimate to 15 rolls, or 108 m² of nominal coverage. This is a practical planning calculation, not a site survey or final installation layout.
15rolls estimated
108 m²
nominal roll coverage
100 m² + 5% allowance, rounded up to whole rolls.
Calculation uses the 100 mm roll size of 7.2 m². All quantities are estimates until confirmed.
QUOTE BASED ON YOUR REQUIREMENTS
100mm Aerolite Price — request a current quote
The best way to compare a 100mm Aerolite Price is to look at how many rolls are needed and what is included. Supply-only prices differ from delivered or installed costs. Rather than show a figure that may have changed, we provide a current quotation based on your roll quantity and location.
For 100mm Aerolite Insulation, divide the quoted price per roll by 7.2 to calculate the material price per nominal square metre. Then consider VAT, delivery, site offcuts and any installation labour. This gives a more useful comparison than looking at roll prices without checking roll size.
A 100mm Aerolite Price enquiry can be for a few rolls or an entire ceiling. If you have the room measurements but not a finished area calculation, use the calculator and add notes explaining access, existing insulation and any unusual ceiling shapes.
INSTALLATION MATTERS
Fitting 100mm Aerolite Insulation correctly
A continuous layer of 100mm Aerolite Insulation is what makes a difference. Follow Isover’s installation instructions, site safety practices and the relevant requirements around wiring, luminaires, flues and ventilation.
- Inspect first.
Look for roof leaks, damaged ceiling boards, electrical hazards and existing insulating material before bringing rolls into the roof space.
- Measure real ceiling areas.
Break the project into rooms or roof-space sections. Allow for difficult edges and cutting; measure ceiling coverage rather than estimating from the overall property footprint.
- Place without compression.
Lay the blanket neatly and retain its designed 100 mm thickness. Cut around obstructions, maintain safe service clearances and leave ventilation paths open.
- Inspect the finished work.
Look for uninsulated gaps, hidden corners and displaced blankets. Use stable access equipment; never step directly onto ceiling boards.
GOOD QUESTIONS BEFORE YOU ORDER
100mm Aerolite Insulation FAQs
What is the roll size for 100mm Aerolite Insulation?
One roll of 100mm Aerolite Insulation is listed by Isover as 6 m long and 1.2 m wide. That equals a nominal 7.2 m² of coverage. Buy enough whole rolls for the planned ceiling area and likely offcuts.
What is the R-value of 100mm Aerolite Soft Touch?
Isover lists the material R-value as 2.50 m²·K/W. This is distinct from the thermal resistance of the complete roof and ceiling system. Check the applicable energy-zone requirement and the design specification.
Does 100mm Soft Touch Aerolite meet Cape Town regulations?
Do not assume it does for a new building. Isover’s energy-zone guide identifies the 100 mm option for zone 5H; it specifies 135 mm for most other listed zones. A qualified designer or installer should confirm the requirements for your particular building and location.
Can I place the product over existing insulation?
Possibly, provided existing material is safe, clean, dry and suitable to retain. Check for compression, gaps, ventilation paths and service clearances. Seek advice if the ceiling already has several layers or unknown insulation.
How do I compare the 100mm Aerolite Price per square metre?
Divide your quoted roll price by 7.2 m². Add delivery, VAT where applicable and installation charges if you are comparing total project prices. Our quote can distinguish material supply from a delivered or installed price.
Can I request rolls instead of square metres?
Yes. Use the Add to Quote button and enter a whole roll quantity directly. Alternatively, type the ceiling area into our calculator and transfer the estimated number of rolls into the form automatically.
READY TO IMPROVE CEILING COMFORT?
Request your 100mm Aerolite Insulation quote.
Tell us how much ceiling area you need to cover and where the rolls are going.