Peat meadow areas in North Friesland face severe water management problems. Because of climate change, they will have to cope with periods of heavy rainfall, but also long dry periods. Additionally, current water management practices have led to dewatering and subsequent land subsidence. The Better Wetter project aims to search for alternative business models and link those with regional economic development. A proposed solution is the cultivation of cattail (Typha spp.) in low-lying flooded land areas for its use as raw material for insulation materials.Exploration of the current research has shown a growing Dutch interest in usage of Cattail for insulation material in academic research, companies and organisations. In Germany and Austria, a market for cattail insulation has already successfully established. Market conditions require a small scale start of production to improve the knowledge on material characteristics and output volumes. When these requisites are met, several market partners will have concrete interest in purchasing the Cattail material. The research for the development of cattail-insulation materials should be designed towards the compliance of different technical standards specific to the intended market of the product. Thermal conductivity, as well as other important parameters such as moisture absorption, ecological quality, and mould and fire resistances should also be considered. Cattail-based insulation materials can be promoted in the construction of BREEAM-certified buildings if specific conditions are met.It is important to understand the cultivation practices for cattail in order to better understand how to increase the yield and quality of the final product. To achieve the best product as fast as possible, it is advised to transplant rhizomes for the production of cattail. Growing the plants in a low density showed to possibly increase the quality of the product, however this does have an impact on yield. The harvesting methods showed to be in a rather premature state at the moment and more research is needed to fully explore all the options.For insulation materials, an experiment performed in collaboration with Bouwgroep Dijkstra Draisma revealed the potential of using cattail as blow-in material, as well as some issues that should be considered when using cattail for this application. Firstly, the moisture content should be checked as the material must be dry enough. Secondly, a cold or heat pre-treatment may be needed to avoid the outbreak of pests. Finally, special attention must be paid to the shredding and mixing processes. Production of particle boards with cattail material is also recommended as it has been proven the suitability of this plant for producing this type of insulation.It was also shown that multiple components of cattail have potential in the production of bio-adhesives, particularly the rhizomes with their high concentration of starch and the leaves for lignin and cellulose. However, starch extraction is cumbersome and leaves are required for the insulation materials.At the end of this report, the main conclusions are addressed, together with advice for further development of cattail-based insulation materials.