The wallpaper, while providing an aesthetic decoration, does not provide significant thermal insulation on its own. Its thickness and composition are generally not sufficient to offer notable thermal insulation properties.

If you are looking to improve thermal insulation in a room, it is more effective to consider other solutions:

1. Insulation in walls: Installing insulating materials such as fiberglass, mineral wool or rigid foam panels in walls can have a significant impact on thermal insulation of a room.

2. Double glazing: Opting for double-glazed windows helps reduce heat loss and improves the energy efficiency of your home.

3. Insulated doors: Installing interior and exterior doors that have insulating properties helps keep heat inside the house and improve thermal comfort.

4. Thermal curtains or blinds: The use of thermal curtains or blinds can help retain heat in winter and block heat in summer, thus contributing to energy savings.

5. Sealing air leaks: Identifying and sealing any air leaks around windows, doors and other openings is essential to prevent unwanted heat loss and improve efficiency energy of your home.

Although wallpaper is not a direct solution for thermal insulation, you can combine it with other home improvements to create a more energy-efficient and aesthetically pleasing environment. If you have questions about how to improve the thermal insulation of your home, consider consulting a professional in energy efficiency or a contractor specialized in home improvements.