flaking

Flaking refers to the detachment and peeling off of layers of paint, varnish or other coatings from surfaces. This process often occurs on building façades, metal parts and wooden surfaces and is a visible sign of aging or damage to the coating. Flaking can be caused by various factors such as weather influences, improper surface preparation or the use of unsuitable materials.

Causes of flaking
Moisture: One of the main reasons for flaking is the penetration of moisture. When water gets behind the paint layer, it can cause the adhesion of the paint to the surface to fail, forming blisters that eventually lead to peeling.
Insufficient surface preparation: A poorly prepared surface that has not been thoroughly cleaned or degreased before painting can impair adhesion and lead to flaking.
Temperature fluctuations: Extreme temperature changes can cause materials to expand and contract, putting stress on the paint layer and causing it to flake.
Aging and weathering: Over time and with constant exposure to sun, rain and wind, paints and varnishes lose their elasticity and adhesion, which leads to cracks and flaking.
Unsuitable coating materials: Using paints or varnishes that are not suitable for the specific surface or environmental conditions can also cause poor adhesion and flaking.

Consequences of flaking
Aesthetic impact: Flaking affects the appearance of surfaces and buildings, which can create an unkempt and neglected impression.
Loss of protection: The peeling layer may lose its protective function, making the underlying surface vulnerable to moisture, corrosion or other environmental effects.
Costly repairs: If flaking is not dealt with in time, it can cause serious damage to the building fabric, requiring complex and expensive repairs.

Prevention and treatment of flaking
Thorough surface preparation: Before applying a new coating, the surface should be thoroughly cleaned, degreased and sanded if necessary to ensure optimal adhesion.
Use of suitable materials: Choosing paints and varnishes that are appropriate for the specific surface and the prevailing environmental conditions is crucial to avoid flaking.
Regular maintenance: Regular inspections and maintenance of coated surfaces can help detect early signs of flaking and address them promptly.
Protection against moisture: Protecting surfaces from moisture through sealing, roofing or other protective measures can significantly reduce the risk of flaking.

Importance of correct coating
Proper surface preparation and the choice of the right coating materials are essential to prevent flaking and extend the life of paints and varnishes. Regular maintenance and early detection of problems can avoid costly repairs and maintain the appearance and protection of surfaces in the long term.

Additional information
Further information on preventing and treating flaking can be found on specialized websites and in professional literature on construction and surface technology.