Envelope Solution

We studied the insulation materials for wall, roof and window, both latest technologies and commercial materials. A database collecting different materials is developed in the project.

Material and solution

Insulating materials for walls/roofs and windows & insulation solutions

Insulating materials for walls, roofs

The reduction of the energy used by the building is to be achieved by multiple measures, which can be either passive or active measures. Whether or not to consider investing in renewable energy, lighting, heat pumps or any other green source of energy for the building, the first step should take is to improve the building’s envelope. Building envelope retrofits should address infiltration first and then thermal performance of the envelope materials. Thermal insulation is one of the most important passive measures. This will ensure to maximize the use of natural resources and don’t waste energy. Skipping this step, the building will end up spending much money buying very powerful systems to cover the energy needs of a badly insulated building or having a bad Indoor comfort. Insulation is one of the most efficient ways to save energy in buildings since it keeps it warm in the winter and cool in the summer. The area for insulation can be roof, floors, walls, windows and doors, according to scientific studies and years of experience, the first target for insulation could be the walls, since for a typical building, the walls will lose around 30 to 40 per cent of heat, the roof comes in second place, accounting for approximately 25% of heat loss. Then come windows and doors with 20% and finally, the floor.
In the project, commercial materials for walls and roofs were studied, including the most commond ones and “Super-insulator” :
• Mineral wool;
• Expanded polystyrene (EPS) or extruded polystyrene (XPS);
• Polyurethane (PUR).
• Aerogel
• Vacuum insulated panels (VIP)
• Gas-filled panel (GFP)

Insulating materials for windows

The manufacturers of windows are developing products more and more effective from the point of view of energy saving. The window is usually composed by one or more glass panes attached to a frame that covers typically less than 15% of the total area. In order to improve the insulation of the windows several strategies can be followed:
• Increasing the number of panes (triple-pane, quadruple-pane).
• Inserting gases with low thermal conductivity in the cavities between the panes (argon, krypton).
• Covering the internal surface of the panes with low-emissivity coatings in order to reduce the radiative heat transfer.

More details is avaiilable in the Community and our on-line Courses.


This is a database of the insulation materials currently available in the market, based on the data declared by the manufacturers or on literary data. Furthermore, this database will help you in decision making when selecting the best solutions from the energetic and economic standpoint.
You can create an account, with different privileges, that allows you calculate the optimal thickness of the selected material and to complete a form with the required parameters for a material and create a new record in the database.
Access Here