Extension specific problems

The connection between the extension and the facade of the existing house "moves" due to settlement of the materials. If this connection has a hard joint, we recommend sealing the opening with a flexible expansion joint sealant. A flexible joint sealant allows the building components to move slightly relative to each other without this being immediately visible. Due to the risk of water ingress and pests, a vertical opening is undesirable. Therefore, any remaining hard joint is best removed.

There are specific points of attention that need to be taken into account if an extension has been constructed

• Facade connection of house (lead) to roof.
• Cold bridge original facade
• Is the existing crawl space ventilation routed to the new facade or is it blocked?
• Extension subsidence in relation to the house
• In the case of an outbuilding, more attention is paid to asbestos applications and, for example, wood-damaging substances.
• Want more certainty? You might consider a building inspection .

If the extension appears to be subsiding relative to the house, there must be visually detectable 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.

• A thermal bridge is, in practical terms, a connection in a structure that conducts the "cold" from outside to the inside of the structure. Moisture from the facade can also easily enter the home this way.
• If moisture affects the walls for a long period of time, plasterwork may come loose at some point and/or structural elements present in the wall may be damaged.
• In many cases, a solution or improvement can be achieved. For example, by retrofitting a lead strip or waterproofing a facade.

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!