Renovation of the cellar or expert refurbishment?


Basements are a common problem area - not only in old houses but also duchwegs in those of recent construction date. Moisture, leaks or sloping plaster from rising and precipitating salts are a common problem. What you can do yourself, read here.

Background information

Not a few cellars cause problems - and actually need a thorough renovation. Unrefurbished, damp cellars pose a threat to the building fabric of the entire building, and can lead to mold throughout the house as a long-term consequence. Remedy here, but requires a planned and meaningful approach.

Cause research is essential

First of all, it's about taking stock. Are there any damp spots - and where do they come from? Rising soil moisture, rising moisture in the walls or pressing groundwater or leachate? Is there possibly a lack of ventilation?

Depending on what brings the cause research to light, you need to take the right measures. Often, bottom joint sealings or waterproofing with bitumen sealant are indispensable from the outside - here, however, the specialist must get to work. For smaller problems, you can also help yourself.

Beware of "miracle products"

There are a large number of over-the-counter "miracle products" on the market, which can often be used even by laymen. Unfortunately, they can not work wonders, and certainly not without sound root cause research and correction. Often a lot of money is wasted here - so be careful.

Step-by-step instructions for renovating the basement

  • depending on the necessary refurbishment measure
  • for checking small carpenter's hammer
  • otherwise depending on the required refurbishment measure

1. Check the cellar

Carefully inspect the basement for visible damage - efflorescence caused by rising salts, moisture damage and damp spots, mold. If necessary, also seek the advice of an independent expert who will examine the cellar. Measure the moisture in the basement with a hygrometer and check for adequate ventilation.

2. Have sealing measures carried out

If necessary, have a specialist company carry out the necessary sealing measures - such as a basic joint seal or a waterproofing of the cellar from the outside.

If necessary, first ensure sufficient forced ventilation of the cellar - otherwise, damp walls can never dry. If necessary, remove any existing mold with 70% alcohol and carefully beat damaged plaster.

3. Perform interior renovation

In any case, whatever you can do yourself, remove and replace old, damaged plaster, install drying equipment and provide adequate ventilation. This is already a lot won.

Tips & Tricks

Keep in mind that especially in older homes, the basements were designed so that food does not dry out. A certain basic moisture was intended here, and does not harm the house either. Be very careful here with overly effective waterproofing and renovation plasters below the ground level.


Video Board: Ideas for renovating a Victorian terraced house