Rigid PIR Insulation 1200 x 2400 x 120mm

Key features

• Thermal conductivity 0.022 W/mK for consistent heat loss reduction
• Compressive strength 175 kPa provides structural stability under building loads
• 1200 × 2400mm board size suits standard cavity widths and timber frame spacings
• 120mm thickness balances thermal performance with practical handling
• Lightweight foam construction simplifies installation and reduces labour time
• BBA product assurance supports building control compliance and professional specification
• Compatible with floors, walls and roof applications in new build and retrofit
• Available from multiple manufacturers (Ecotherm, IKO, Mannok, Recticel, Unilin) ensuring supply continuity

Specifications

Board dimensions

1200 × 2400 × 120mm

Thermal conductivity

0.022 W/mK

Compressive strength

175 kPa

Material

Rigid polyisocyanurate (PIR) foam

Density

approximately 30–35 kg/m³

Fire performance

Euroclass B-s1, d0 (typical)

Moisture resistance

closed-cell foam structure

Board area per unit

2.88 m²

Approximate weight per board

10–12 kg

Manufacturers supplied

Ecotherm, IKO, Mannok, Recticel, Unilin (subject to availability)

Product assurance

BBA certified

Applications

floors, walls, roofs, cavity fill, thermal bridging

Common applications

• Cavity wall insulation in new build and retrofit projects
• Pitched roof insulation between rafters or above purlins
• Flat roof insulation in warm-roof and inverted-roof specifications
• Suspended timber floor insulation between joists
• Solid floor insulation above concrete slabs
• Thermal bridging reduction at lintels, jambs and party walls
• Basement and below-ground wall insulation
• Timber frame external wall insulation
• Refurbishment and energy-efficiency upgrades to existing buildings
• Commercial and industrial building envelope improvements

Search keywords

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Description

Rigid PIR insulation board in 1200 × 2400 × 120mm format is a lightweight foam solution for new build, refurbishment and retrofit insulation across floor, wall and roof applications. The standard board size enables straightforward handling and installation in trade and serious DIY workflows. Thermal conductivity of 0.022 W/mK delivers consistent performance, whilst compressive strength of 175 kPa provides structural stability under typical loading conditions.

The 120mm thickness suits mid-range thermal requirements in building fabric upgrades. BBA product assurance underpins specification confidence for building control and professional specification. We supply PIR insulation boards from Ecotherm, IKO, Mannok, Recticel and Unilin depending on current stock availability. All brands meet the same thermal and structural performance criteria.