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View Product Reviews170mm Knauf Loft Roll 44 Insulation Combi-Cut (8.01m2/Roll)
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Glass mineral wool loft insulation roll with Combi-Cut design. Suitable for cold pitched roofs at ceiling level with 400mm or 600mm joist centres. 170mm thickness ideal for meeting modern new build standards.
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Product Overview
Glass mineral wool loft insulation roll with Combi-Cut design. Suitable for cold pitched roofs at ceiling level with 400mm or 600mm joist centres. 170mm thickness ideal for meeting modern new build standards.
Delivery & Returns Information
How Our Delivery Works
We work with a nationwide network of trusted suppliers. As a result, items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you'll see multiple delivery charges at checkout. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery Areas & Charges
Delivery charges listed on our website apply to mainland UK, excluding the following postcode areas: AB, CF, DD, DG, FK, KW, IV, LA, LD, LL, NP, PA, PH, SA, SY
If your delivery address falls within one of these postcode areas, we’ll be in touch before processing your order to confirm any additional delivery costs.
Please note: We do not currently offer delivery outside the UK mainland.
Standard (Nationwide) Delivery
| Insulation, Plasterboard and Drylining Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £350 | £35 ex. VAT |
| Over £350 ex. VAT | FREE |
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £100 | £15 ex. VAT |
| Between £100 - £300 ex. VAT | £10 ex. VAT |
| Over £300 ex. VAT | FREE |
| Screws & Fixings and Adhesives & Sealants | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £50 | £5 ex. VAT |
| Over £50 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £50 ex. VAT |
| Over £400 ex. VAT | £35 ex. VAT |
| Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £50 ex. VAT |
| Over £300 ex. VAT | £35 ex. VAT |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
- {{home}} Use in floors and pitched roofs
- {{local_fire_department}} A1 non-combustible
- {{thermostat}} 0.044 W/mK thermal conductivity
- {{build}} Easy to handle and install
- {{content_cut}} Ready-cut for use at 600mm or 400mm centres
- {{public}} Zero Ozone Depletion Potential (ODP)
Technical Specification
| Material Type: | Glass Mineral |
|---|---|
| Thickness: | 170mm |
| Width: | 1140mm |
| Length: | 7030mm |
| Sales Unit: | Roll |
| Sales Unit Coverage: | 8.01m2 |
| Brand: | Knauf Insulation |
| Manufacturer's Reference: | 2404156 |
| Thermal Conductivity: | 0.044W/mK |
| Fire Rating: | A1 Non-Combustible |
Technical Downloads
Product Overview
Glass mineral wool loft insulation roll using ECOSE® Technology and a high recycled content.
Supplied with Combi-Cut part-splits, it can be installed as either 2 × 570mm or 3 × 380mm widths, aligning with 400mm or 600mm timber joist centres.
The roll adapts to slight substrate imperfections and knits together to eliminate gaps, achieving reliable coverage.
With a thermal conductivity of 0.044 W/mK and Euroclass A1 non-combustibility, it delivers dependable safety and performance.
At 170mm thick, it enhances loft insulation performance, supporting compliance with stricter energy-efficiency targets.
Features & Benefits
- Glass mineral wool composition: Provides strong thermal and acoustic insulation.
- Manufactured from recycled glass: Sustainable and environmentally responsible.
- Combi-Cut flexibility: Supplied part-cut to suit 400mm and 600mm joist centres.
- Resilient quilt form: Recovers after compression and conforms to irregular surfaces.
- Knits together in place: Minimises air gaps for continuous coverage.
- Euroclass A1 fire rating: Classified non-combustible for safe loft use.
- Thermal conductivity 0.044 W/mK: Ensures effective heat retention.
- 170mm thickness: Ideal for meeting demanding insulation specifications.
Applications
- Loft top-up insulation: Adds additional depth over existing insulation.
- Pitched roofs at ceiling level: Primary application between timber joists.
- Overlay insulation: Cross-laid to improve thermal resistance and reduce bridging.
- Timber joist floor systems: Can also provide insulation in suspended floors.
Installation Guidance
- Install between joists as first layer: Creates base thermal coverage.
- Lay second layer at right angles: Enhances performance by reducing gaps.
- Ensure tight fit with no voids: Maintains insulation continuity.
Compliance & Performance
- BS EN 13162 certified: Meets requirements for mineral wool insulation products.
- Euroclass A1 fire rating: Fully non-combustible material.
- Generic BRE Green Guide rating A+: Recognised as environmentally preferable.
- Zero ODP and Zero GWP: Contains no ozone-depleting or greenhouse gas substances.
- DECLARE Red List Free label: Free from formaldehyde, phenol, and other restricted substances.
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