Knauf Earthwool
75mm Knauf Ceiling Insulation
75mm Knauf Ceiling Roll is glass mineral wool designed for pitched roofs insulated at ceiling level. Each 1.2m × 12.8m roll covers 15.36m² and provides R1.88 thermal resistance, NRC 0.93 acoustic absorption, ECOSE® Technology and an A1 non-combustible fire classification.
(R-value)
(non-combustible)
Product Overview
75mm Knauf Ceiling Insulation is a glass mineral wool ceiling roll designed for pitched roofs insulated at ceiling level. Each roll measures 1.2m × 12.80m, covers 15.36m² and provides a South African R-value of R1.88.
The 75mm roll also provides an NRC of 0.93 for acoustic absorption, has an A1 non-combustible fire classification and is manufactured with ECOSE® Technology. Knauf supplies Ceiling Roll in Combi-cut and uncut formats to suit different joist layouts.
Key Benefits
- ✓ R1.88 thermal resistance at 75mm thickness
- ✓ 15.36m² coverage from each 1.2m × 12.80m roll
- ✓ NRC 0.93 acoustic absorption
- ✓ Available as Combi-cut or uncut full-width roll
- ✓ Designed for pitched roofs insulated at ceiling level
- ✓ A1 non-combustible fire classification
- ✓ Manufactured with ECOSE® Technology
Typical Application
Designed for pitched roofs insulated at ceiling level, with the roll laid between joists or used as part of a layered ceiling-insulation build-up.
Technical Product Data
75mm Knauf Technical Specifications
Detailed product information for 75mm Knauf Ceiling Insulation, including roll dimensions, 15.36m² coverage, R1.88 thermal resistance, NRC 0.93 acoustic performance and A1 fire classification.
| Brand | Knauf Earthwool |
|---|---|
| Product type | Ceiling Insulation |
| Material | Glasswool |
| Thickness | 75mm |
| Nominal roll size | 1.2m (W) × 12.80m (L) |
| Coverage per roll | 15.36m² |
| R-value | 1.88m²·K/W |
| Euro R-value | 1.85m²·K/W |
| NRC | 0.93 |
| Binder technology | ECOSE® Technology |
| Fire classification | A1 Non-Combustible |
| Applications | Ceiling insulation, retrofit projects, new homes and insulation upgrades |
Insulation Applications
75mm Knauf Applications
See where 75mm Knauf Ceiling Roll fits within pitched-roof ceiling insulation, retrofit work and layered installations.
75mm Ceiling Insulation
Use at ceiling level in pitched roofs, typically laid between joists or combined with a second layer.
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New-Build Ceiling Projects
Use where the project design calls for a 75mm glass mineral wool layer with an R-value of R1.88.
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Retrofit & Insulation Upgrades
Suitable for ceiling upgrades and retrofit projects where a 75mm layer is appropriate to the build-up.
View Ceiling Insulation →Professional Installation
Installing 75mm Knauf Ceiling Insulation
Correct installation helps the 75mm Knauf Ceiling Roll maintain its intended thermal performance at ceiling level.
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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 →75mm Knauf Product Information
Frequently Asked Questions
75mm Knauf Ceiling Roll provides a South African R-value of R1.88m²·K/W.
One roll covers 15.36m² and has a nominal roll size of 1.2m × 12.80m.
The 75mm Knauf Ceiling Roll has an NRC of 0.93 for acoustic absorption.
Yes. Knauf lists 75mm 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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