Metisse PMA is a sustainable acoustic and thermal insulation material developed by the French company Le Relais Métisse, produced from recycled textile fibers sourced from post-consumer waste such as old clothing and denim jeans, consisting of at least 85% recycled fibers (primarily cotton) bound with 15% polyester.[1][2][3] It features key variants like the 45 mm thickness at 45 kg/m³ density, specifically optimized for superior sound absorption with an acoustic efficiency of αw ≈ 0.95, making it highly effective for reducing noise in building applications.[1][2] First introduced in 2007 as part of Le Relais Métisse's eco-innovation efforts to repurpose non-reusable textiles that would otherwise be incinerated, it is manufactured in facilities in France and distributed across Europe, including Belgium and the Netherlands.[3][4]

This material stands out in green building projects due to its high acoustic tuning for mid- and high-frequency absorption, vapor permeability for humidity regulation, and fire classification of Euroclass B, while being non-irritating and easy to install without producing dust or requiring protective masks.[1][2] Composed of at least 85% recycled textile fibers (primarily cotton) bound with 15% polyester and treated with zinc pyrithione to prevent mold and pests, it supports circular economy principles by transforming waste streams into a biobased product with a low ecological footprint, as verified through Life Cycle Analysis (LCA) and certifications like ACERMI for Metisse products.[1][3][4] Unlike traditional insulations like mineral wool, Metisse PMA offers resilience—returning to its original thickness after compression—and is suitable for applications in partition walls, ceilings, floors, and timber frame constructions, contributing to energy savings and healthier indoor environments.[1][2] Its production also aligns with social sustainability by creating employment opportunities through partner organizations focused on integrating people with barriers to work.[1]

Description

Metisse PMA is a non-woven insulation panel primarily composed of 85% recycled cotton fibers sourced from post-consumer textile waste, such as old clothing, combined with 15% polyester binding fibers.[5][6] It is available in standard dimensions of 1200 mm x 600 mm and thicknesses including 20 mm and 45 mm, making it suitable for various installation formats.[2][7]