Damage - damage in the masonry - mold - salt

Damage - damage in the masonry - mold - salt: mold

Damage to and in the brickwork can have many causes. Salts count as well as Mold, frostbite and rusty rebars, Allen has in common is that Moisture in the formation and extension of damage patterns plays a big role.

damages caused by mechanical loads without water involvement On the other hand, they are extremely rare and, as a rule, the causes for this can be determined quite quickly: Subsidence or shocks caused by demolition and construction work in the vicinity are quite significant events.

Mostly it's the damage Water pollution affecting the masonry pull. We would like to help you here with the cause research and also give you some tips for rectification.

  • Contents: Masonry damage, damage and causes
  • Causes of damage from the inside
  • Causes of damage from the outside
  • Blasts of frost and salt
  • Mold - dangerous spores
  • Chemical damage causes
  • Attention: rust in the basement

In the In most cases water and moisture damage occurs in the masonry in the basement on. The exception is hidden and open burst pipes - but here, too, the water usually follows gravity, so that the consequences show up in many cases first in the basement.

All further Damage can be attributed to either internal or external causesbe n. Here it is sometimes necessary to develop a detective sense in the cause research. And as damage to the fabric of buildings often involves considerable values ​​at stake, it certainly makes sense in case of doubt to ask an expert for advice.

Causes of damage from the inside

Damage - damage in the masonry - mold - salt: mold

Condensation caused by incorrect ventilation is one of the major causes of moisture from the inside. Basement windows should therefore remain closed in warm weather.

In addition to the water input from pipe bursts, it is mainly condensation moisture that causes wet walls in the basement. The basement walls are usually colder than the walls in the rest of the house, so be aware of it Moisture from the room air quickly precipitates.

One reason for this is wrong airing. Contribute significantly Cellar window at, which is wide open on warm summer days become. As a result, warm air flows into the basement and cools down there.

as cold, The humidity condenses on cooling partly to water, which precipitates on the walls.

Damage - damage in the masonry - mold - salt: wall

When water comes from outside through the wall, the external seal will not work as desired. In this case it makes sense to renew it

This can be easily avoided by Basement mainly airs when it is cool outsidethat is, about late in the evening or early in the morning.

For the "right ventilation" the same rules apply as in living rooms, as far as they can be implemented on the ground because of the conditions: Short airing, if possible with draft, to a complete air change to achieve no permanently tilted windows. Do not place cabinets or large furniture in the basement directly against the wall to prevent waterlogging.

Causes of damage from the outside

Damage - damage in the masonry - mold - salt: mold

Water that rises from the bottom of the building in the wall can be stopped with a horizontal dam. The lock can also be retrofitted.

Wetness can of course also from the outside come. In the first place two ways play a role, which takes the water.

For one thing it can through the basement walls penetration. That can after heavy rains or high groundwater levels happen.

But also the Earth moisture can enter the masonry pull. The problem here is regularly a nonexistent, insufficient or defective perimeter sealSo the lack of an effective seal outside on the basement walls.

The house is then in the water like a ship at sea, but the Walls are leak or porous, In such cases, sealing in the long term alone will help from the outside - a labor-intensive and lengthy affair, as the basement walls need to be uncovered.

The other problem may be the lack of a functioning horizontal barrier to prevent the rising of water due to the so-called capillary action. If this is the cause, usually one can be retrofitted mechanical or chemical horizontal barrier Install.

Blasts of frost and salt

Damage - damage in the masonry - mold - salt: wall

Different salts can be dissolved by water from the building materials and then crystallize. They can break off plaster and in extreme cases even destroy the substance of the wall.

Moist walls are much more than just a visual problem. Water can destroy masonry over time. This can be done simply by freezing moisture in the wall.

Ice has a larger volume than liquid water, so it can be used during Freezing in extreme cases pushing wall components apart or bursting bricks and create cracks this way. The cracks penetrate the water even more easily - a vicious circle that can only be interrupted by a renovation and the professional sealing of the wall.

Somewhat more complicated is the Away with blasting through masonry salts, The water in the wall releases salts from the building materials, typically sulfates or calcium nitrate (Wall saltpetre), which crystallize again in dry phases - often on the wall surface or just below the plaster.

These Crystals in turn attract ambient humiditye on. Ultimately, the plaster can chip off or the masonry can be superficially destroyed - a process that is progressing.

Damage - damage in the masonry - mold - salt: damage

Here you can see in the area of ​​the basement walls large-scale plaster blasting on the outside - high time for a renovation.

Alarm signs are here sloping or down bloating putty and salt efflorescencen on the wall. The first measure must be here again, the Origin of the water to clarify and further penetration a bar advance. Then the wall must be dehumidified and desalinated.

Damage - damage in the masonry - mold - salt: mold

A professionally applied renovation plaster can bring the solution to wet, ausalzenden walls

For this purpose, there are renovation plasters, which because of their pore structure, the water out of the wall, but not let in. They also collect remaining salts in their pores.

Before the application of such a restoration plaster must the wall through Scrub and brush off thoroughly from efflorescence become.

By the way, some plasters are applied as so-called sacrificial plasters: after they have absorbed water and salts for a sufficient time and pulled them out of the wall, you hit them again and then bring a suitable permanent putz on.

Mold - dangerous spores

Damage - damage in the masonry - mold - salt: mold

Mold is not only ugly, the spores in the air pose a health hazard to the residents.

As unsightly as Harmful consequence of damp walls is a mold attack, It can occur anywhere where moisture on organic materials can be found over a long period of time, because these two factors are sufficient for the mold as a basis for life.

The unsightly pads are already for themselves annoying, but more dangerous are the spores, the mold emits. They can lead to health hazards - from allergic reactions to full-blown asthma.

Damage - damage in the masonry - mold - salt: masonry

An effective preventative measure against mold is the insulation of the outer shell of a building. As so-called perimeter insulation, it is also useful in the basement.

Mold must therefore be eliminated immediately. The affected plaster surfaces must be cut off generously become. To kill the remaining mycelium in the wall, a blowtorch can be used.

If you live in the cellar, work, celebrate, or even have a sauna and a fitness room down here, this means a higher humidity level.

An effective preventive measure against mold is - in addition to the renovation of a moistened from the outside wall - effective thermal insulation. Insulated walls are on the Inside much warmer, therefore, there is a much lower risk that condensate forms on it.

Attention: rust in the basement

Damage - damage in the masonry - mold - salt: salt

Rust marks are always an alarm signal - whether on the ceiling or here on reinforced concrete components.

If one discovers traces of rust on the cellar ceiling and is one Buildings at the ripe age of about one hundred years, then the basement ceiling was probably designed as a steel girder construction.

Rust in the ceiling area, especially at the transition to the walls, can in In this case, indicate a lack of viability.

The supports of the steel girders in the walls are the critical points; It is therefore imperative that the building fabric is checked by an expert to let.

The same applies to rust marks on newer buildings. Here it can be assumed that the reinforcement of reinforced concrete components was affected.

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Video Board: Efflorescence Tips and Tricks