The construction sector continuously strives for sustainable development and works to find environmentally friendly solutions. Today, buildings' energy use accounts for more than 30% of the world's total energy use and global carbon dioxide emissions. A significant part of the industry's emissions comes from the insulation materials they choose, which is crucial for the issue of sustainability.

The purpose of this study is to examine existing insulation materials more deeply to identify and present the alternatives that meet the most sustainability criteria to a greater degree, and which can be helpful to construction companies when choosing insulation in their projects. The study examines how well each insulation material meets important criteria according to BBR and the interests of the construction industry. The criteria studied include environmental impact, thermal conductivity, moisture and mold properties, fire safety, sound insulation, waste management and purchase price.

To achieve the purpose, a literature study is used as a method, where relevant data was collected from various databases such as Scopus and Google Scholar.

The results show that all insulation materials fulfill certain criteria in different ways, such as thermal conductivity, environmental impact, purchase price, waste management and moisture and mold management, while they fulfill sound insulation at basically the same level. Hemp insulation was identified as the least harmful to the environment and with sustainable properties. Traditional mineral wool shows the greatest environmental impact.

The conclusion is that no insulation material fully meets all criteria, but some materials are more durable than others based on certain criteria.