NEW PRODUCT: SLIMFLEX – The Smarter Flexible Liner

Poujoulat Introduces SLIMFLEX‑ISO: A Game‑Changer in Chimney Relining

July 2025 - Poujoulat, a leading name in chimney and flue systems, has unveiled its latest innovation: SLIMFLEX‑ISO, a state-of-the-art insulated flexible liner that sets a new standard in chimney renovation.

Unveiled at the BEPOSITIVE trade show earlier this year, SLIMFLEX‑ISO is a first-of-its-kind, ultra-slim solution featuring a high-quality stainless steel liner at its core, surrounded by a 13 mm layer of mineral insulation and an outer sheath of robust glass fibre material.  This compact design enables seamless relining of conventional masonry flues, even in tight spaces—a major advancement over bulkier traditional options.

At the heart of the system lies the innovative GRIPFLEX header end-piece, designed to bind the insulation and glass fibre sheath snugly to the liner’s core. Its robust, ergonomic profile aids installers in guiding the liner through difficult bends and offsets. The result? Faster, smoother installations and improved flue draft performance.

Poujoulat UK offers SLIMFLEX‑ISO in multiple diameters - from 80 mm up to 150 mm - presented in convenient 25 m coils and pre-cut lengths - complete with GRIPFLEX headers.

SLIMFLEX‑ISO complements Poujoulat’s broader range of flexible flue solutions - such as STARFLEX, the trusted double-skin stainless steel liner for multi-fuel applications - and is fully compatible with all STARFLEX components, ensuring seamless integration and installation flexibility.

What This Means for Installers and Homeowners

• Ultra‑thin profile: The 13 mm insulation makes SLIMFLEX‑ISO ideal for space-limited environments.
• Installer-friendly: End-piece GRIPFLEX eases threading through tricky offsets.
   
• Customisable and efficient: Coil format with easy cutting saves time and materials.
   
• Enhanced performance: Insulation improves and increases draught, prevents low-temperature flue gas and dew point formation, thereby extending the operating life of the chimney liner and boosting appliance efficiency.
   
• Certified quality: SLIMFLEX‑ISO is CE marked and fully compliant with BS EN 1856‑2, carrying the designation T450 N1 W V2 L50010 G—assuring high standards of safety, performance, and durability.

“SLIMFLEX‑ISO gives installers a reliable, future-proof solution for lining existing stacks -especially in tight or awkward flue runs,” says Anthony Reed-Forrester, Managing Director at Poujoulat UK. “Renowned for its innovation, Poujoulat continues to lead the way with this major step forward in chimney renovation - making relining simpler, neater, and more energy-efficient than ever before.”

For more information, visit poujoulat.co.uk/Slimflex