90mm Rockwool Flexi Insulation Slab

90mm Rockwool Flexi is a high-performance stone wool insulation product engineered to deliver both thermal and acoustic insulation capabilities. Distinguished by its patented flexible edge design on one side, this insulation slab ensures superior performance across multiple building applications.

The flexible edge technology on this Rockwool Flexi slab creates a precise friction fit between the product and structural framework. Installation is straightforward, with the slab positioned easily between fresh timber. As timber naturally dries and contracts, the insulation expands to fill any gaps, maintaining thermal continuity. Classified as Euroclass A1 non-combustible, this 90mm Flexi Slab delivers enhanced fire safety alongside excellent thermal and acoustic insulation performance.

This mineral wool insulation product suits numerous building applications, from pitched roof installations to timber-framed external walls and internal partition systems.

Product Specification

Thickness: 90mm

Width: 600mm

Length: 1200mm

Dimensions: 1200x600mm - 4.32m2

Density: 33kg/m3

Weight of 1m2: 1.65kg

Weight: 12.83kg

Thermal Conductivity: 50-120mm 0.038 W/mK / 140mm> 0.035 W/mK

R-Value: 2.43m2K/W

Product Standards: BS EN 13162

Reaction to fire (Euroclass): Euroclass A1

Acoustic: Achieves Part E (resistance to sound) when installed in accordance to ROCKWOOL guidelines

Water vapour resistance: 5.2 MNs/gm

Water repellent: Yes

FEATURES AND BENEFITS:

• Excellent thermal performance. • Effective noise absorption. • Euroclass A1 non-combustible. • FLEXI Edge ensures tight friction fit. • Remains securely in place when timber studs dry out and contract. • Mineral wool insulation batts (slabs) CE marked to BS EN 13162:2012+A1:2015

Applications

1. Intermediate Floor Insulation
2. Separating Floor
3. Rafter Line
4. Separating Wall
5. Partition Wall
6. Pitched Roof
7. Timber Frame
8. Floor Solutions

About

This 90mm Rockwool Flexi non-combustible insulation slab represents an advanced multi-purpose insulation solution featuring innovative flexible edge technology. Developed through patented engineering, it provides rapid installation with a reliable friction fit that guarantees consistent performance. The flexible edge maintains optimal contact between the product and its supporting structure, enabling straightforward installation and reliable thermal efficiency.

The adaptability of Rockwool Flexi 90mm makes it suitable for diverse building scenarios. From timber-framed external walls and roof rafters to floor systems and partition walls, this insulation product performs effectively across all applications. Its flexibility allows seamless integration into various building components, enhancing overall thermal and acoustic performance.

With 90mm Flexi Insulation Slab, you benefit from innovative design and premium quality engineered to address your insulation requirements with reliability and ease.

Info

Explore our comprehensive Rockwool range and refine by thickness or coverage using the left-hand filters. For guidance on product suitability for your specific project or to request a bulk quotation, contact us by phone on +4402038839057, email sales@insulationbee, or use our Live Chat service - Competitive UK Insulation Pricing.