Recently, my husband and I decided to start insulating our house. We changed the windows, added weather stripping to the doors, and stuck a reflector behind the radiator. We thought that would be enough, but after talking to our neighbor, we found out that it's also advisable to insulate the floor since we live on the first floor and the basements are damp. We called a specialist from the company "Smart Home." They quickly took measurements, carefully dismantled the floor, and added some insulating film. It didn't cost as much as we thought, and it also comes with a warranty of over 10 years. Now we are waiting for the cold weather!