Knauf Earthwool
50mm Knauf Ceiling Insulation
50mm Knauf Ceiling Roll is a lightweight glass mineral wool insulation roll for pitched roofs insulated at ceiling level. Each 1.2m × 19m roll covers 22.80m² and provides R1.25 thermal resistance, NRC 0.81 acoustic absorption, ECOSE® Technology and an A1 non-combustible fire classification.
(R-value)
(non-combustible)
Product Overview
50mm Knauf Ceiling Insulation is a lightweight glass mineral wool ceiling roll for pitched roofs insulated at ceiling level. Each roll measures 1.2m × 19.00m, covers 22.80m² and provides a South African R-value of R1.25.
The 50mm roll provides an NRC of 0.81 for acoustic absorption, carries an A1 non-combustible fire classification and is manufactured with ECOSE® Technology. Its long 19m roll provides 22.80m² coverage from each pack.
Key Benefits
- ✓ R1.25 thermal resistance at 50mm thickness
- ✓ 22.80m² coverage from each 1.2m × 19.00m roll
- ✓ NRC 0.81 acoustic absorption
- ✓ Long 19m roll provides high coverage per pack
- ✓ Designed for pitched roofs insulated at ceiling level
- ✓ A1 non-combustible fire classification
- ✓ Manufactured with ECOSE® Technology
Typical Application
A practical thin-layer option for pitched roofs insulated at ceiling level, including projects where a 50mm glass mineral wool layer is specified.
Technical Product Data
50mm Knauf Technical Specifications
Detailed product information for 50mm Knauf Ceiling Insulation, including the 1.2m × 19.00m roll, 22.80m² coverage, R1.25 thermal resistance, NRC 0.81 acoustic performance and A1 fire classification.
| Brand | Knauf Earthwool |
|---|---|
| Product type | Ceiling Insulation |
| Material | Glasswool |
| Thickness | 50mm |
| Nominal roll size | 1.2m (W) × 19.00m (L) |
| Coverage per roll | 22.80m² |
| R-value | 1.25m²·K/W |
| Euro R-value | 1.25m²·K/W |
| NRC | 0.81 |
| Binder technology | ECOSE® Technology |
| Fire classification | A1 Non-Combustible |
| Available formats | Combi-cut or uncut full-width roll |
| Applications | Ceiling insulation, pitched roofs, retrofit projects and layered insulation systems |
Insulation Applications
50mm Knauf Applications
See where the 50mm Knauf Ceiling Roll fits within pitched-roof ceiling insulation, upgrades and layered insulation systems.
50mm Ceiling Insulation
Use at ceiling level in pitched roofs where a 50mm glass mineral wool layer suits the design.
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New-Build Ceiling Projects
Suitable for new-build specifications requiring a 50mm glass mineral wool layer with R1.25.
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Retrofit & Layered Insulation
Useful for retrofit work or as an additional layer within a multi-layer ceiling insulation build-up.
View Ceiling Insulation →Professional Installation
Installing 50mm Knauf Ceiling Insulation
Correct installation helps the 50mm Knauf Ceiling Roll deliver its intended R1.25 thermal performance.
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Installation ServicesProduct Documentation
Knauf Technical Downloads
View technical information, product literature and fire certification for Knauf Ceiling Roll.
Knauf Insulation Datasheet
Product dimensions, R-values, acoustic performance and technical specifications.
View Datasheet →Knauf Introduction Guide
Additional product and brand information supplied by Knauf Insulation.
View Brochure →Knauf Fire Certification
Fire performance certification for Knauf Ceiling Roll.
View Certificate →50mm Knauf Product Information
Frequently Asked Questions
50mm Knauf Ceiling Roll provides a South African R-value of R1.25m²·K/W.
One roll covers 22.80m² and has a nominal roll size of 1.2m × 19.00m.
The 50mm Knauf Ceiling Roll has an NRC of 0.81 for acoustic absorption.
Yes. Knauf lists the 50mm Ceiling Roll in both Combi-cut and uncut full-width formats.
The product carries an A1 non-combustible fire classification.
ECOSE® Technology is Knauf Insulation's bio-based binder technology used in its glass mineral wool products.
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