40mm Steico Flex 036 Wood Fibre Insulation 375mm

40mm STEICOflex 036 wood fibre insulation batts (375mm width) provide a sustainable, high-performance insulation option manufactured from renewable wood fibres. These batts deliver excellent thermal efficiency and moisture regulation, enhancing indoor comfort whilst minimising environmental impact. Fully biodegradable, they represent a responsible, durable choice for contemporary UK construction projects.

The wood fibres come from FSC-certified forests, guaranteeing responsible forest management practices. Vapour-open and breathable in nature, these batts promote healthy indoor air quality, minimise condensation problems, and work exceptionally well in timber frame and narrow stud applications, offering dependable insulation whilst safeguarding the building structure.

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

Key Benefits

• Model: Steico SteicoFlex 036
• Thickness: 40mm
• Board Length: 1190mm
• Board Width: 375mm
• Pack Quantity: 10
• Board Coverage: 0.446m2
• Pack Coverage: 4.46m2
• Weight/piece. [kg]: 1.4kg
• Pack Weight: 8.92kg
• Fire class (RTF) according to EN 13501-1: E
• Declared thermal resistance: [(m² K) / W]: 1.10
• 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 - suited to 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

40mm STEICOflex 036 is produced from natural wood fibres, delivering a sustainable alternative to mineral wool and synthetic insulation products. Its breathable composition helps manage temperature and moisture levels, contributing to enhanced indoor air quality and improved long-term building performance. Particularly suited to low-energy and environmentally conscious construction schemes.

High Thermal Performance for Energy-Efficient Buildings

Featuring thermal conductivity of 0.036 W/mK, 40mm STEICOflex 036 delivers superior insulation against winter heat loss and summer overheating. This performance helps minimise energy consumption, reduce heating costs and maintain stable indoor temperatures year-round. Appropriate for residential and commercial properties throughout the UK.

Excellent Acoustic Insulation

40mm STEICOflex 036 375mm provides exceptional sound absorption, effectively reducing airborne noise and improving acoustic performance. It suits applications in walls, floors and ceilings, making it a preferred option for homes, offices, studios and mixed-use properties where noise reduction is important.

Easy, Flexible Installation

These 40mm flexible insulation batts are engineered for straightforward and rapid installation, fitting snugly between studs, joists and rafters. The 375mm width aligns with standard UK timber frame dimensions, whilst the flexible nature permits simple trimming and installation around services and complex spaces. Suitable for both experienced installers and self-build projects.

Eco-Friendly & Sustainable Insulation Choice

40mm STEICO 036 375mm supports responsible building practices. Wood fibres originate from sustainably managed forests, and the product is entirely recyclable and biodegradable. Selecting STEICOflex helps lower environmental footprint whilst satisfying current UK building regulations for environmental performance.

Suitable Applications

• Homes: Enhance comfort and lower energy expenses
• Commercial buildings: Boost energy efficiency and sound control
• Studios & offices: Dependable acoustic insulation
• Renovations: Upgrade insulation with sustainable solutions
• New builds: Comply with modern low-carbon construction requirements

Healthier Indoor Environment

Formulated without harmful substances, 375mm STEICO 036 fosters a healthier indoor setting for occupants. Its moisture-balancing characteristics minimise condensation and mould formation, fostering improved indoor air quality and resident health.

Why Choose STEICOflex 036?

STEICOflex wood fibre insulation batts unite natural materials, outstanding thermal and acoustic properties, and straightforward installation. They represent an excellent option for those seeking premium, sustainable insulation across the UK.

Info

Explore our full range of Steico Wood Fibre Insulation products. We deliver to all UK Mainland locations. To discuss product suitability for your project or request a bulk discount quotation, contact us on 02039519012 / 02038839057, email sales@insulationbee.co.uk or use Live Chat - Lowest UK Insulation Prices near me.