First of all, the option "wall" in the choices for where I spread the acrylic is not correct, as I spread it on the terrace. Since there is no option for "terrace", I chose the closest one in relation to the other options. This insulation is the best there is. I have been working with acrylic insulation for 30 years. This is the most suitable for short-term insulation. I mean that permanent insulation with pitch and felt is the top, but if you don't have the money, then you go for economical methods that will do the job for at least 3 years depending on the climate of course. For the area of Athens, I believe I will have at least 3 years of carefree insulation. I bought 3 out of the 10 kilograms and covered an area of 80 square meters, following faithfully the dilution instructions with water that are on the packaging. I used a roller to apply it and not to waste material, I didn't pour it into trays, I simply dipped the roller directly into the ten-kilo and carried it with me every now and then until it was finished. If you have leftover material, do as we did. Put it back in the packaging it came in. Close it very well as if it had never been opened and store it in a cool and shady place.