Hi , My wife and I bought a house in the Lot (46)in March where we moved on a permanent basis. We are now dealing with an alarming number of wide fissures which most likely are due to the hot weather which we have all been enjoying recently . The cracks seem to run centrally through the house from front to back and although we have obviously approached the Mairie about a declaration of a " catastrophe " it seems unlikely that this will happen soon if at all. Our concern is the rate at which the cracks are developing both on the floor and the walls . Whilst we looked to get a structural engineer to come and look we were told by our insurance company "Pacifica" that any report by an external surveyor would not be admissible when making a possible claim .We have been advised by a builder that we need to underpin the house and my question is simply has anyone used or can recommend one of these companies who would service Lot (46) . We know there is Soltechnic but can anyone recommend any others. We really feel that we need to deal with these cracks quickly as a damage limitation to the rest of the house. The house was built in the seventies .So if there are any builders or anyone who has experience of this sort of issue who can advise or recommend we'd love to hear from you .