In our dining room the temperature is correct, on the other hand in its continuity the entry and the kitchen (contiguous to the entrance) are rooms where one heats up to 22 to obtain barely 20 degrees (kitchen and entrance have a wall facing the outside) I therefore plan to ask Depron, for cons I wonder if there is an interest also ask the Depron on 2 walls "terraced" kitchen / entry that they do not give on the outside and who each have a radiator (which turns but does not offer the expected heat).
A few millimeters of an insulating material like Depron do not bring anything at the level of insulation. This type of product is very interesting to avoid condensation on a cold wall but not to provide true insulation. Only insulating doubling of sufficient thickness (more than 10 cm) can bring a significant improvement.
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