fachadas-decoman

Services

Facade pathologies

MOST COMMON PROBLEMS AFFECTING BUILDING FACADES:

The problems that a building facade may present are very diverse and at Decoman we offer you solution for all of them:


· Carbonation.

This is the uncontrolled advance of CO2 carbon dioxide (present in the air) through concrete. It affects the durability of the structural frame which, due to a decrease in pH, no longer remains protected and can corrode. When a corrosion process is triggered, the useful life of the building facade can be seriously reduced.

Treatment:

Remove all defective areas and clean up until you reach the frame, then apply an anti-rust primer. To recompose the concrete, we must use the most appropriate concrete repair mortar indicated for each specific case.


· Fissures and cracks.

Their origin can be diverse: they may be due to a moisture or damp issue within the wall itself, subsidence of the structure, or lack of elasticity of the cladding...

Treatment:

Open up a “V” crack, removing parts of detached mortar or damaged paint. Consolidate the open crack, to ensure a better anchoring of the filling product. Then apply special elastic putty for facades. In the event that the crack is larger than usual, other solutions such as mallatex, fiberglass rods, etc. should be applied.


· Blistering and peeling.

This can happen due to the lack of water vapor permeability of some surfaces. Continued and untreated blistering can lead to scaling and wall peeling.

Treatment:

Spray the surface with pressurised water (180 bar) and then scrape the areas that remain loose with manual tools (spatula, wire brush, etc.). Once the surface dries, a special elastic putty for facades is applied.


· Damp patches on the facade.

Moisture and pollution are the causes. Together or separately they can cause the wall to peel.

Treatment:

Spray the surface with pressurised water (up to 220 bar) and then scrape the areas that remain loose with manual tools (spatula, wire brush, etc.).. The source of the damp will then be treated, together with application of a fixative.


· Eflorescences.

White stains on the surface of the paint, cement or brick, transported there by moisture/damp, which impairs the adhesion of the paint to the structure.

Treatment:

Detecting and neutralizing the focus of moisture/damp is essential for the rehabilitation process to be correct. Once that has been achieved the surface must be blasted with pressurized water (180 bar) and then areas that remain loose must be scraped by manual means (spatula, wire brush, etc.) Once the surface dries, a special elastic putty for facades is applied.


· Biological colonies (infestations) on facades.

Moisture is their great ally. A biological attack of this sort multiplies the moisture absorption capacity of the wall, thereby increasing its effects.

Treatment:

Spray the surface with pressurized water, and then treat infected areas with special disinfectant products to prevent their reproduction.

 

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