Statement: The extension appears to be subsiding relative to the house. First, examine the horizontal and vertical alignment between the house and the extension. There may be nothing wrong here, but it's also possible that the extension has a different foundation than the house, resulting in this effect. This should be investigated or further investigated. Then, it can be determined whether the movement of the extension/conservatory is active or stabilized, and therefore acceptable.
The soil structure under an existing house is different from that under an extension; if no pile foundation has been used, uneven settlement almost always follows.
Piling has been installed under the house, but not under the extension. In this case, too, uneven settlement almost always occurs, or even worse, the extension sinks away from the house. Foundation repair or stabilization of the soil structure may be a possible solution.
Nowadays, several repair methods are available to provide an extension with a foundation with piles.
There are specific points of attention that need to be taken into account if an extension has been constructed
If the extension appears to be subsiding relative to the house, there must be visually observable deviations in the horizontal and vertical alignment between the house and the extension. The extension may be based on a different foundation than the house. If this is the case, further investigation or inquiry should be conducted. This will determine whether the movement of the extension/conservatory is active or stabilized and therefore acceptable.
If there are no visible thermal bridges connecting the conservatory to the house, this means the conservatory isn't properly insulated and could lead to moisture problems on the interior walls (formerly facades). For a clear moisture measurement and solution, contact a professional.
Is repair and improvement necessary? Roof repairs can be done in several ways! We recommend involving a qualified contractor who can weigh the various options and advise you further.
We often encounter this situation: a beautiful extension is built, but the existing crawl space ventilation isn't connected to the new exterior wall. The result is that the existing crawl space no longer ventilates, with all the risks that can arise.
The cost of a building inspection (up to 250 m²) is only €489 including VAT. We'll conduct a comprehensive building inspection and you'll receive a building report. Do you have any questions? We're happy to help and can schedule an appointment with an expert inspector right away if you wish!
