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I bought an old house in 2010 and now this winter I saw hair lifts on a load-bearing wall. Since the purchase I have installed PVC double glazed windows. I do not have a lot of ventilation in this house. Also I must specify you that I have no foundation and that in front of me I have a dry well (according to the old inhabitants, because the town hall does not know); on the other hand the city will do road works in 2015. They will put gutters to clean because there are homes that have water in the cellars. My house is on limit and after me the land belongs to the town hall. I asked them to do a peripterous drainage of the house: I have no answer. What do you think of the boxes from Isotec. I do not know what to do…?

First, make sure that it is a question of capillary rise. At the description of the problem, it seems that a certain previous equilibrium had been established: a little capillary rise, but a naturally ventilated house, destroyed by the installation of new and, by definition, waterproof joinery. Correcting this by installing a VMC, a VMI, extractors or humidity-sensitive vents is a first step.
Then, it seems prudent to wait for any positive effects that may result from the installation of gutters by the municipality, likely to limit the excess moisture in the surrounding terrain.
Finally, if all these actions do not bring enough improvement, the installation of peripheral drainage, as well as resin injections in the lower part of the wall or walls concerned, should help overcome these problems.
As for the different systems supposed to reduce the humidity, they can, for some, have a positive action, but they do not solve the fundamental problem.

On the same topic

  • DIY tips
    • Treatment of the humidity of walls and floors
    • Restoration of old, wet and saltpainted masonry

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