Steicoflex 036 50mm Wood Fibre Insulation Batts

50mm STEICOflex 036 wood fibre insulation batts (375mm width) deliver sustainable, high-performance thermal protection using renewable wood fibres. These flexible insulation boards combine excellent heat retention with natural moisture management, enhancing indoor comfort whilst minimising environmental impact. Fully biodegradable and responsibly sourced, they represent a dependable option for contemporary UK building projects.

Sourced from FSC-certified woodlands, the fibres ensure responsible forestry practices. The vapour-permeable design promotes healthy air circulation, reduces condensation buildup, and suits timber frame and tight stud configurations perfectly, safeguarding structural integrity whilst providing reliable thermal coverage.

Looking for the 575mm Width Version ? Visit Steicoflex 575mm

Key Benefits

• Model: Steico SteicoFlex 036
• Thickness: 50mm
• Board Length: 1190mm
• Board Width: 375mm
• Pack Quantity: 9
• Board Coverage: 0.446m2
• Pack Coverage: 4.01m2
• Weight/piece. [kg]: 1.115kg
• Pack Weight: 10.03kg
• Fire class (RTF) according to EN 13501-1: E
• Declared thermal resistance: [(m² K) / W]: 1.35
• Declared thermal conductivity: 0,036 W/(m K)
• Density: 50 kg/m³
• Water vapour diffusion resistance factor µ: 2
• Specific heat capacity: 2.100 J/(kg K)
• Declared level of airflow resistance: ≥5 (kPa s)/m²
• Material: Wood Fibre
• Product type: Flexible insulation
• Ingredients: Wood fibres, polyolefin fibres, ammonium sulfate

Product Overview

• Width: 375mm - ideal for standard UK stud spacing
• Material: Natural, breathable wood fibres
• Performance: Thermal and acoustic insulation
• Sustainability: Eco-friendly, recyclable and biodegradable
• Installation: Lightweight, flexible and easy to fit

This natural wood fibre insulation provides an environmentally conscious alternative to conventional mineral and synthetic products. Its permeable composition actively regulates temperature and humidity levels, promoting superior indoor air quality and extended building durability. Particularly suited to energy-conscious and sustainable construction schemes.

High Thermal Performance for Energy-Efficient Buildings

Delivering thermal conductivity of 0.036 W/mK, this 50mm product offers superior insulation against winter heat loss and summer heat gain. The result is reduced energy consumption, lower utility costs, and stable interior temperatures year-round. Suitable for residential and commercial properties throughout the UK.

Excellent Acoustic Insulation

These 375mm batts provide outstanding sound absorption capabilities, effectively dampening airborne noise and enhancing acoustic performance. Particularly effective in walls, floors and ceilings, making them suitable for residential homes, commercial offices, recording studios and mixed-use properties where noise reduction matters.

Easy, Flexible Installation

Engineered for straightforward and rapid installation, these flexible batts compress neatly between studs, joists and rafters. The 375mm dimension aligns with standard UK timber frame spacing, whilst the flexible nature permits simple trimming and fitting around pipes, wires and awkward areas. Appropriate for both trade professionals and self-build applications.

Eco-Friendly & Sustainable Insulation Choice

This product supports responsible building practices. Wood fibres derive from sustainably managed forests, and the entire product is recyclable and compostable. Selecting STEICOflex reduces your environmental footprint whilst satisfying contemporary UK building regulations for green construction.

Suitable Applications

• Homes: Improve comfort and reduce energy bills
• Commercial buildings: Enhance energy efficiency and acoustics
• Studios & offices: Effective sound insulation
• Renovations: Upgrade existing insulation sustainably
• New builds: Meet modern low-carbon construction standards

Healthier Indoor Environment

Formulated without hazardous substances, this product fosters a healthier interior atmosphere. Its hygroscopic properties minimise condensation and mould development, supporting improved air quality and occupant health.

Why Choose STEICOflex 036?

STEICOflex wood fibre insulation batts merge natural materials, outstanding thermal and acoustic qualities, and straightforward fitting. They represent the ideal solution for those requiring premium-grade, sustainable insulation across the UK.

Info

Browse our complete Steico Wood Fibre Insulation range. We deliver throughout the UK Mainland. To discuss product suitability for your scheme, request a volume discount, or speak with our team, contact us on 02039519012 / 02038839057, email sales@insulationbee.co.uk or use Live Chat - Competitive UK Insulation Pricing.