Painting plays an important role in indoor decoration. It’s prone to have some tough problems. As long as the causes of painting problems are identified and solved with correct methods, there would be satisfactory results. Here are some common painting problems that may occur in decoration and relevant solutions which can be helpful.
If the original coating contain gloss paint or powder-like paint with unprocessed mill base, another layer of painting on the surface is likely not be sticky enough because of smooth original coating; paint may fall off from decayed wood or metal with rusty spots; due to poor quality, paint is prone to spall.
If a small area of paint fall off, you can burnish the area with a piece of fine sand paper, smear some putty, brush one layer of primer and paint it again; for large area of spalling, you have to scrape all paint off and repaint it.
It is very common to find paint sparkling on wood surfaces. First, you can puncture the bubbles. If there is water, it means that it permeates underneath paint and evaporates into steam which jacks up the paint into many bubbles. At this point, remove the paint with a sirocco gun first and let timber become dry naturally, brush priming paint and repaint on the repaired wood surfaces finally.
If there is no water, the swelling paint may be caused by air expansion in the sun, which means that wood grains are likely to craze and the air permeates into the grains. In such situation, you should shave off the swelling paint, reoccupy the grains with resin padding and repaint it; or you can paint microporous coating after shaving.
Expect spalling and sparkling, other paintproblems, such as cracking paint and unsmooth paint, may occur during indoor decoration. With clear analysis and solutions, all these problems can be settled.