Ecotherm Eco-Fix Foil Faced (TR26) 1200mm x 2400mm – 50

Ecotherm Eco-Fix Foil Faced (TR26) 1200mm x 2400mm – 50mm is a rigid polyisocyanurate (PIR) flat roof insulation board engineered for use with mechanically fixed single-ply waterproofing membranes. Part of Ecotherm’s Building Innovation range — and manufactured under the Kingspan Group — it delivers outstanding thermal performance in a lightweight, easy-to-handle format suited to both trade contractors and self-builders. At 50mm thick, it achieves a thermal conductivity of just 0.022 W/mK, making it one of the most thermally efficient foil-faced flat roof boards available in the UK.

Key Features and Specifications

• Material: Rigid thermoset polyisocyanurate (PIR) insulation core — fibre-free
• Facing: Aluminium composite foil on both sides
• Dimensions: 1200mm x 2400mm (8′ x 4′) — 2.88m² per board
• Thickness: 50mm
• Thermal conductivity (λ-value): 0.022 W/mK
• Compressive strength: Exceeds 150 kPa at 10% compression (BS EN 826: 2013)
• Reaction to fire: Euroclass F (System 4 AVCP)
• Product suitability: Mechanically fixed single-ply membranes
• Compatible deck types: Concrete, metal, and timber
• Mould & vermin resistance: Fibre-free core resists mould, microbial growth, and vermin
• Brand: Ecotherm (Kingspan Group)
• Standard: BS EN 13165

Applications

• New-build flat roof insulation with single-ply membranes (TPO, PVC, EPDM)
• Flat roof refurbishment and thermal upgrade on existing roofs
• Warm flat roof build-ups on concrete decks
• Metal deck and timber deck flat roof insulation
• Commercial and residential flat roofing projects requiring Part L compliance

Why Choose This Product

The Ecotherm Eco-Fix TR26 50mm board offers a proven combination of slim profile and high thermal resistance, helping you hit target U-values without adding unnecessary depth to the roof build-up. Its fibre-free PIR core resists mould and vermin, while the aluminium foil facing reduces radiant heat transfer. Compressive strength exceeding 150 kPa ensures the board performs reliably underfoot during installation and under membrane loads in service. Backed by Kingspan Group’s manufacturing standards, it is a trusted choice for roofing contractors, flat roof specialists, and trade buyers across the UK.

Delivery in and Around London

We deliver the Ecotherm Eco-Fix Foil Faced (TR26) 50mm board to London boroughs including Croydon, Lewisham, Southwark, Camden, and Hackney, as well as Greater London areas such as Enfield, Bexley, Redbridge, and Barnet. We also supply to the surrounding counties of Kent, Essex, Surrey, and Hertfordshire. Trade quantities and multi-board orders are welcome — contact us for volume pricing and scheduled site deliveries.