Dampness is one of the details that can most affect the image of a property when it goes on the market. Sometimes it seems like something small, but for a buyer it can raise many doubts: whether there are leaks, whether the property is well maintained or whether they will have to take on repairs after buying.

That is why, before selling a house, it is advisable to carefully check walls, ceilings and areas where dampness may appear. A simple method to carry out an initial check is the aluminium foil trick.

What the aluminium foil trick consists of

The trick is simple. A piece of aluminium foil is placed on the area of the wall where dampness is suspected and left there for 24 to 48 hours.

Afterwards, it is removed and you observe where the dampness appears. If it is on the side attached to the wall, it may indicate that the problem comes from a leak or from inside the wall. If it appears on the outer side of the foil, it is usually more related to condensation.

It is not a definitive solution, but it can help to better understand the source of the problem before making decisions.

Why it is important before selling a property

A property with signs of dampness conveys insecurity. Even if the rest of the house is fine, a stain on the wall can make the buyer think of hidden problems or unexpected costs.

This can lead to more negotiation, less interest or even the buyer rejecting the property.

Detecting it in advance allows time to act. Sometimes it is enough to improve ventilation, repair a small leak or repaint properly after solving the root of the problem.

What type of dampness is more concerning

Condensation is usually more common in homes that have been closed for long periods or have poor ventilation. It can appear in bedrooms, bathrooms or cold areas of the house.

Leaks, on the other hand, usually require more attention, as they may come from façades, roofs, terraces, pipes or exterior walls.

That is why it is important not to cover the stain without knowing where it comes from. Painting over it may improve the appearance for a few days, but if the problem is still there, it will reappear.

How this affects Costa Blanca and Costa Cálida

In areas such as Torrevieja, Pilar de la Horadada, Orihuela Costa, San Pedro del Pinatar or La Manga del Mar Menor, dampness can appear more easily due to the proximity to the sea, irregular ventilation or properties that remain closed for periods of time.

This does not mean the property is in poor condition. It is often a common issue in coastal areas, but it should be checked before showing the property.

A well-ventilated, clean home with no visible dampness conveys much more confidence from the first viewing.

Can it affect the sale price

A buyer who detects dampness will usually think about repairs, costs and possible future problems. This can lead them to try to negotiate the price or lose interest.

On the other hand, a well-prepared property generates a much more positive impression. The buyer focuses on the advantages of the property, not on possible defects.

Is it a problem or an opportunity

If dampness appears during a viewing, it can become a problem. If it is detected before putting the property on the market, it is an opportunity to correct it and improve the presentation.

Preparing the property before publishing helps avoid surprises and improves the image of the listing, photos and viewings.

At Munfort, we help owners in Costa Blanca South and Costa Cálida prepare their property before going on the market, taking care of details that can greatly influence the sale.