Agricultural and wooden based waste products (different hemp shives, flax shives, oat husk, wood chips) were used to develop eco-materials with low thermal conductivity (density around 200 kg/m3, specific heat capacity 1100– 2000 J/(kg*K). The bio-based fillers were tested and used together with mineral (gypsum and activated alumosilicates) and organic binders (potato starch) for the production of innovative insulation eco-materials by using pressure moulding, thus increasing the stability of the samples. Tests of mechanical properties of the developed eco-materials were performed on a Zwick Z100 universal testing machine, according to LVS EN 826. The thermal conductivity and specific heat capacity of the materials were determined using the LaserComp heat meter FOX600 and Netzsch HFM 446 Lambda Small according to the guidelines of Standard LVS EN 12667. The microstructure was analysed by micro-tomography, compatibility between fibres and binder were tested by FTIR, but physical properties were determined according to LV standards. Micro-encapsulated PCM slurry Microcaps PCM25-S50 was used to increase thermal properties of experimental developed eco-materials. In this case, microcapsules were introduced in the structure of the material during the production stage. The bio-based materials were experimentally developed with different amounts of micro-encapsulated PCMs to improve their properties. As a conclusion plant origin fibers are possible to use for development of the insulation materials with properties similar to the commercial materials obtained in the market. The novel materials correspond to the European Green Deal and the 2030 Climate Target Plan. The European Commission has recommended that the EU have to reduce its greenhouse gas emissions by at least