200mm Knauf Earthwool Loft Roll 40 Combi Cut

200mm Knauf Earthwool Insulation Loft Roll 40 is a Glass Mineral Wool roll engineered for cold loft spaces where insulation is fitted at ceiling level beneath pitched roofs. This 200mm loft insulation provides excellent thermal performance across its range.

Boasting non-combustible properties, the 200mm Knauf Loft Roll 40 achieves the top Euroclass A1 fire rating. The product is manufactured using Knauf Insulation proprietary bio-based binder, ECOSE® Technology.

Product specification

Brand: Knauf®

Model: 200mm Knauf Loft Roll 40

Thickness: 200mm

Length: 4850mm

Width: 1140mm (2x570 3x380)

Dimensions: 8,5840mm x 1,140mm x 200mm

Pack Coverage: 5.53m2

Material: Glass Mineral Wool

Profile: Combi-Cut | 2x570mm | 3x380mm

Facing: Unfaced

R-Value: 4.85m2K/W

Thermal Conductivity: 0.040 W/mK

Fire Classification: Euroclass A1

Vapour Resistivity: 5.00MNs/g.m

Applications: Pitched roof at ceiling level

ECOSE Technology: Yes

Features: Quick and simple installation

Manufacturer: Knauf Insulation Earthwool®

200mm Knauf Loft insulation Roll 40 is available in the following formats:

• Combi-cut rolls
• Ready-cut rolls
• Uncut rolls
• Short length, combi-cut rolls

ADVANTAGES

1. Lightweight and compact when compressed, making transport and handling straightforward on-site.
2. Combi-cut variants feature partial perforation, giving you the choice to fit between joists or use as a full-width roll, boosting installation speed.
3. Ready-cut options arrive pre-sized, streamlining on-site work.
4. Uncut variants allow customisation—fit between joists or deploy as full-width rolls for rapid installation.
5. Extended lengths are manufactured to enable swift, hassle-free installation and maximise on-site productivity (Combi-cut, ready-cut, and uncut rolls).
6. Shorter lengths provide a budget-friendly option in smaller packs, particularly for short-length Combi-cut rolls.

Application

200mm Loft Rolls provide thermal insulation for cold pitched roofs at ceiling level. Installation typically involves two layers: the first layer sits between the joists, whilst the second layer runs over and perpendicular to the joists.

Sizes:

Management, Cutting, and Storage Guidelines:

• 200mm Knauf Loft Roll 40 is straightforward to manage thanks to its light weight and simple installation process. Cutting to size is quick and easy.
• The 200mm Loft Insulation Rolls come in recyclable polythene packs (4-LDPE) for short-term on-site protection.
• For longer-term protection, store the product indoors or under cover, raised off the ground.
• Avoid leaving Loft Rolls exposed to weather for extended periods.

About

Our 200mm Glass Mineral Wool insulation range incorporates up to 80% recycled content. By maximising recycled glass in manufacturing, we minimise the need for virgin raw materials.

Thermal

The 200mm insulation delivers energy-saving benefits and thermal efficiency, keeping buildings warm in winter and cool in summer. Heat loss accelerates when temperature differences between inside and outside are greater. Our 200mm Knauf mineral wool insulation solutions help maintain stable indoor temperatures by reducing heat transfer via convection, conduction, and radiation. Proper insulation significantly cuts energy costs by reducing heating demands in winter or cooling demands in summer.

Fire Safety

The 200mm loft insulation provides passive fire protection capabilities. Buildings must be designed and constructed to minimise fire risk, restrict spread, maintain structural integrity, and enable safe evacuation. Our non-combustible mineral wool insulation acts as a fire barrier and does not fuel fire progression, reducing overall impact and severity.

Acoustic

Insulation's acoustic properties are vital for creating comfortable internal environments. Noise control enhances quality of life in homes and promotes healthy, productive spaces in offices, hospitals, schools, and other buildings. Our 200mm Knauf mineral wool insulation rolls deliver strong sound absorption and noise reduction in new builds and retrofit projects, resulting in superior sound insulation and acoustic comfort.

Info

Browse our Knauf Insulation range and filter by thickness or coverage using the left-hand menu. For product suitability advice or bulk quotations, contact us on +4402038839057 , email sales@insulationbee or use Live Chat - Best UK Knauf Loft Insulation Prices.