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Paint failure is a common phenomenon and it occurs on a large scale. A paint job is not a permanent job. The 2-3 layers of color coating usually measure about 40-50 mm in thickness after drying. Paint comes off of the walls eventually and it requires the renewal after a certain period of time. The problem occurs when the breakdown of paint occurs after a short time. A painting job requires a lot of preparation and its durability depends upon all the factors that should be taken into consideration before the carrying out painting job. Most common reasons for the failure of paint are given below.
Poor Surface preparation
This is the most common reason for the paint failure. Poor surface preparation causes poor adhesion of the paint on the surface. Lack of proper sticking of the paint to the surface results into paint film to come off early.
Chalking
Paint Chalking is the formation of fine, white, chalky powder on the surface of the paint film. It occurs due to weathering of paint. The paint binders slowly degrade due to moisture which results into easing the hold of the binder on paint pigments.
Flaking
The phenomenon of the paint film lifting from the underlying surface in the form of flakes is called as flaking. This occurs due to inadequate adhesion and lack of flexibility. Flaking can also occur due to overspreading or under spreading of the paint.
Alkali
When the lime in wall reacts with carbon dioxide from the air the alkalinity of the wall increases and it attacks the integrity of paint film which results into the color loss.
Moisture
The water that gathers on the wall surface due to rain or dew penetrates the paint film which results in discoloration or peeling.
Cracking
Lower quality paints lack flexibility and thin coats are less adhesive. When the painting is done under hot weather conditions, the water-based paints dries too fast. The splitting of dry films through one coat leads failure of the whole painting job.
Dirt Pickup
Dust particles and dirt usually accumulate lower quality paint surfaces by air pollution, soil splashing, and other physical factors. Accumulation of dirt resists the paint to stick to the surface properly. Poor adhesion of paint results into the paint failure.
Fading
Chalking of the wall surface results in poor color retention. Harsh weather or extreme sunlight results into fading.
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Peeling
Paint coating comes off easily before time due to poor adhesion. Poor Adhesion of paint coating results into peeling.
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