PAVAFLEX Wood Fibre Insulation

PAVAFLEX is a natural, high performance flexible wood fibre insulation slab designed for use between rafters, studs, and joists. Easy to handle and fiction fit into place, it offers exceptional thermal, acoustic and moisture regulating performance, making it a durable and eco friendly alternative to conventional insulation.

Key Benefits

• Easy to Install - flexible batts friction fit snugly between rafters, studs, and joists without gaps.
• Comfortable to Handle - unlike many conventional insulations, PAVAFLEX is gentle on the skin and dust free.
• Thermal Protection (Winter and Summer) - with low thermal conductivity (λᴰ = 0.038 W/mK) and high specific heat capacity (2100 J/kgK), PAVAFLEX keeps buildings warm in winter while providing excellent summer heat protection by storing daytime heat and releasing it at night.
• Breathable and Vapour Open - high vapour permeability (μ = 2) prevents trapped moisture and protects against condensation damage.
• Excellent Sound Insulation - dense and porous fibre structure provides strong acoustic protection, reducing unwanted noise transfer.
• Sustainable and Carbon Locking - made from waste wood fibres sourced from sustainable forestry. Pavaflex helps lock carbon within buildings, avoids CO₂-intensive alternatives, and can be fully recycled, composted, or incinerated for energy recovery at end of life.

Carbon Locking Properties

• Trees naturally capture and store CO₂.
• Harvested wood fibres in PAVAFLEX keep that carbon locked in buildings for decades.
• European forests are sustainably managed - with more trees planted than felled.
• Replacing conventional insulation with wood fibre reduces reliance on CO₂-intensive materials.
• One of the simplest ways to combat climate change is by using more wood in construction.

Applications

• Roof insulation (between or under rafters).
• Internal and external timber frame walls. 
• Partition walls and ceilings.
• Joists and floor insulation.

Technical Data

• Bulk density - 50 kg/m³
• Thermal conductivity (λᴰ) - 0.038 W/mK (EN 13171)
• Specific heat capacity (c) - 2100 J/kgK
• Water vapour diffusion resistance (μ) - 2
• Reaction to fire - class E (en 13501-1)
• Waste codes (EWC) - 030105; 170201; 170604
• Edge profile - straight
• Fixing - friction fitted (mechanical fixing optional, subject to application)
• Storage - store dry, protected from damage. Install only when dry. Pallets should not be stacked

Available Sizes

Pavaflex 575mm (for wider stud/rafter spacing)

Pavaflex 375mm (for narrow stud/rafter spacing)