EnergyLite Insulation – Premium Ceiling & Acoustic Wool
EnergyLite Insulation is a professional-grade glasswool product designed for thermal and acoustic control in ceilings, walls, and industrial applications. Manufactured using non-combustible glass fibers bonded with a sustainable resin, it delivers consistent performance, durability, and safety for all building types.
This versatile insulation is available in multiple densities (24, 47.5, 64, and 80 kg/m³) and thicknesses (40 mm, 50 mm, 75 mm, 100 mm), ensuring optimal performance for every project. Whether you’re insulating a home, office, retail outlet, or factory, EnergyLite provides the perfect balance of efficiency, comfort, and fire safety.
Key Features
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Exceptional Thermal Insulation – Maintains indoor comfort year-round and reduces energy use.
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Acoustic Sound Absorption – Minimizes noise transfer in ceilings and walls.
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Non-Combustible – Fire-safe glasswool certified to SANS 10177-5.
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Eco-Friendly Composition – Made from recycled glass and free of CFCs or HCFCs.
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Rigid & Durable – Retains shape, resists sagging, and maintains insulation performance.
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Easy to Install – Lightweight, flexible, and compatible with most ceiling and wall systems.
EnergyLite Insulation Density Options Explained
EnergyLite 24 kg/m³
This is the entry-level density — light, flexible, and ideal for standard thermal insulation where acoustic control is secondary. Commonly used in residential ceilings and low-traffic areas, it provides reliable thermal resistance and helps lower heating and cooling costs.
Applications: Residential ceilings, suspended ceiling voids, and general-purpose insulation.
Performance: Lightweight yet effective; easy to cut and fit between trusses or framing.
EnergyLite 47.5 kg/m³
The mid-range density offering an excellent balance between sound absorption and thermal performance. It provides improved rigidity for vertical and overhead installations and delivers superior noise control in homes, offices, and classrooms.
Applications: Drywall partitions, office ceilings, acoustic panels, and bulkhead insulation.
Performance: Enhanced acoustic comfort, higher compressive strength, and easy handling.
EnergyLite 64 kg/m³
The high-density option designed for projects requiring advanced acoustic isolation and temperature regulation. It effectively absorbs low-frequency sound and withstands high mechanical stress without deformation.
Applications: Schools, cinemas, conference rooms, and mechanical plant enclosures.
Performance: Outstanding noise reduction, long-term thermal stability, and superior durability.
EnergyLite 80 kg/m³
The premium-grade density engineered for extreme conditions and demanding environments. It offers maximum soundproofing, fire safety, and vibration resistance, making it the first choice for industrial and high-performance acoustic walls.
Applications: Industrial ceilings, HVAC ducts, power plants, theatres, and studios.
Performance: Highest R-value per thickness, best sound absorption (NRC ≈ 1.00), and exceptional mechanical strength.
Thickness Options Explained
40 mm EnergyLite Insulation
Slimline insulation ideal for tight spaces or retrofit ceilings. It delivers effective thermal performance in shallow cavities without compromising ceiling depth.
Best used in: Suspended ceilings, low-clearance ceilings, or where minimal build-up is required.
50 mm EnergyLite Insulation
A versatile choice for standard ceiling and wall cavities. The 50 mm thickness offers a strong balance between energy efficiency and acoustic comfort.
Best used in: Residential and office ceilings, drywall partitions, and general-purpose applications.
75 mm EnergyLite Insulation
Provides superior acoustic absorption and a higher R-value for enhanced thermal regulation. It’s the go-to thickness for buildings that require peace and privacy between rooms.
Best used in: Schools, offices, hotels, and healthcare facilities.
100 mm EnergyLite Insulation
The maximum thickness in the range, designed for heavy-duty applications. Ideal for extreme climates or areas requiring top-tier soundproofing.
Best used in: Industrial buildings, studios, and high-performance energy-efficient structures.
Technical Specifications
| Property | Unit | 24 kg/m³ | 47.5 kg/m³ | 64 kg/m³ | 80 kg/m³ |
|---|---|---|---|---|---|
| Thermal Conductivity (λ) | W/m·K | 0.040 | 0.037 | 0.035 | 0.034 |
| R-Value (40 mm) | m²·K/W | 1.00 | 1.08 | 1.14 | 1.18 |
| R-Value (50 mm) | m²·K/W | 1.25 | 1.35 | 1.43 | 1.47 |
| R-Value (75 mm) | m²·K/W | 1.87 | 2.02 | 2.14 | 2.21 |
| R-Value (100 mm) | m²·K/W | 2.50 | 2.70 | 2.85 | 2.94 |
| Density Range | kg/m³ | 24 | 47.5 | 64 | 80 |
| Sound Absorption (NRC) | — | 0.70 | 0.85 | 0.95 | 1.00 |
| Fire Rating | — | Non-combustible | Non-combustible | Non-combustible | Non-combustible |
| Water Vapor Absorption | % | < 2 % | < 2 % | < 2 % | < 2 % |
| Corrosiveness | — | Non-corrosive | Non-corrosive | Non-corrosive | Non-corrosive |
| Recycled Content | % | Up to 80 % | Up to 80 % | Up to 80 % | Up to 80 % |
Ideal Applications For EnergyLite Insulation
| Building Type | Recommended Density & Thickness | Purpose |
|---|---|---|
| Residential Ceilings | 24 kg/m³ × 40–50 mm | Affordable thermal insulation for comfort and energy savings. |
| Office Drywall Partitions | 47.5 kg/m³ × 50–75 mm | Balanced acoustic and thermal insulation for quiet, productive spaces. |
| Educational Facilities | 64 kg/m³ × 75 mm | Enhanced noise reduction and safety for classrooms and lecture halls. |
| Stud Walls (Commercial) | 64 kg/m³ × 75–100 mm | Improves privacy and comfort in multi-room buildings. |
| Theatres, Studios & Cinemas | 80 kg/m³ × 100 mm | High-performance soundproofing and vibration control. |
| Industrial Roofs & Ducting | 80 kg/m³ × 100 mm | Durable, fire-safe insulation for high-temperature environments. |
Fire & Safety Performance of EnergyLite Insulation
EnergyLite is non-combustible, meeting SANS 10177-5 fire safety standards. It does not burn, emit toxic smoke, or support flame spread — making it suitable for public buildings, offices, and high-occupancy spaces.
Its inert glass fibre composition ensures zero corrosion on metal structures and long-term performance in high-humidity environments.
Environmental Commitment
EnergyLite is manufactured with up to 80 % recycled glass, reducing landfill waste and embodied carbon. It’s formaldehyde-free, CFC/HCFC-free, and compliant with Green Star SA environmental requirements.
By installing EnergyLite, builders and homeowners support sustainable construction without compromising quality or comfort.
Installation Guidelines
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Measure stud or truss spacing before cutting.
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Cut EnergyLite slightly oversize for a snug fit.
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Do not compress the insulation — compression reduces R-value.
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Seal joints with appropriate boards or membranes to prevent air leakage.
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Handle with care: wear gloves and a dust mask when installing.
EnergyLite fits easily between standard ceiling battens, drywall studs, and steel framing systems. No adhesives or mechanical fasteners are needed — just a clean, tight friction fit.
Performance Summary
| Performance Attribute | Result | Standard |
|---|---|---|
| Fire Performance | Non-combustible | SANS 10177-5 |
| Thermal Efficiency | High R-values up to 2.94 | ASTM C518 |
| Acoustic Absorption | NRC up to 1.00 | ASTM E1050 |
| Water Resistance | < 2 % absorption | ASTM C1104 |
| Corrosion Resistance | No corrosion | ASTM C665 |
| Environmental Compliance | Recycled & formaldehyde-free | Green Star SA |
Why Choose EnergyLite Insulation
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Tested to South African building and fire standards.
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Engineered for long-term stability and performance.
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Ideal for both thermal and acoustic specifications.
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Backed by expert advice from Cape Ceilings & Drywalling.
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Supplied in various densities and thicknesses for complete design flexibility.
Typical Uses
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Residential ceiling voids and drywall partitions.
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Office, school, and retail acoustic systems.
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Industrial ceilings and duct insulation.
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Sound-rated stud walls and recording studios.
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Refurbishment of existing ceiling structures for energy compliance.
Maintenance and Longevity
Once installed, EnergyLite requires no maintenance. It won’t sag, deteriorate, or absorb moisture, and its performance remains consistent throughout the building’s lifetime. It also acts as a barrier against condensation and helps protect ceiling materials from thermal stress.
How EnergyLite Compares
Compared to traditional ceiling insulation materials, EnergyLite offers superior fire performance, higher R-values per thickness, and longer lifespan. Its glasswool structure provides natural sound absorption that foam or foil products cannot match — making it the professional’s choice for premium installations.
Product Packaging
EnergyLite comes in compressed, lightweight rolls or slabs, easy to transport and store. Each pack expands on opening to full thickness, maximizing coverage and reducing waste on-site.
Conclusion
EnergyLite Insulation delivers unmatched performance in thermal comfort, sound control, and safety. Available in 24 kg/m³, 47.5 kg/m³, 64 kg/m³, and 80 kg/m³ densities and 40 mm – 100 mm thicknesses, it’s the professional insulation solution trusted across South Africa’s residential, commercial, and industrial sectors.
Whether you’re upgrading a ceiling or insulating an entire complex, EnergyLite ensures consistent quality, superior efficiency, and lasting protection — supplied and supported by Cape Ceilings & Drywalling.
Shop EnergyLite Insulation today — high-performance ceiling and acoustic wool for every project. Enjoy superior sound, fire, and thermal protection with Cape Ceilings & Drywalling.
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