Flaw

Phenomenon

Reason

Solution

Weeping (sagging)

The paint drops on the vertical surface downwards, forming tear-like or ripple-like appearance

• Too thick application in the first time
• Too much dilution
• Application on the unfinished smooth surface

• Avoid too thick application in the first time by apply it many times
• Reduce the dilution proportion
• Apply it on finished smooth surface

Crack

The pain forms small crack during the hardening process

• Too thick application
• Top paint applied before the primer is hardened
• High-elasticity primer used ?
• Base plane cracked

• Apply it in the normal dilution proportion
• Apply the top paint after the primer ?reaches the proper dry degree
• Change it with elastic paint

Orange peel

The coat forms appearance like orange peel after the coat becomes hardened

• Too high spraying viscosity
• Sprayer too far from the base plane
• Too high application? temperature

• Increase the dilution proportion
• Adjust it to proper distance (30cm)

Peeling and falling

The coat leaves from the base plane

• Too high humidity in the base plane
• Unstable coat adhesion due to unclean surface processing
• Poor quality primer used

• Resolve the wall leakage problem and make the wall dry fully
• Apply the paint after removing the peeled and fallen coat and making normal surface processing
• Select the supporting primer ?

Heavy brush trace

Trace exists after the coat becomes hardened.

• Too thick paint
• Improper application tool
• Too high ambient temperature , and too high water absorption speed

• Increase the dilution proportion
• Use soft brush and short roller

Local lost of luster

The coat shows uneven luster 不after it becomes hardened

• Rough base plane
• Too much dilution
• Too high spraying pressure
• Too strong alkaline on the wall surface

• Make the base plane flat and apply a layer of closed primer ?
• Increase the dilution proportion
• Reduce the atmosphere pressure
• Make surface processing on the wall with strong alkaline

Obvious joint line

Obvious joint line exists after painting or rolling

• Too large application area in the first time
• Too fast hardening process

• Reduce the application area in the first time
• Increase the dilution proportion

Pulverization

Powder substance appears on the coat surface

• Poor resistance to elements
• Unprocessed wall
• Too low application temperature
• Too much dilution

Remove the powder substance, and apply two layers of paint in normal dilution proportion with good resistance to elements after add the oily wall primer

Washed by rainwater

The film is uneven due to rainwater washing in a short time after the paint is applied.

The coat is not dry

• Avoid being washed by rainwater within 24 hours after applying the paint
• Reapply the paint on the washed coat surface

Shrinkage cavity

Volcano-like uneven phenomenon appears on the coat.

Paint and dust adhere to the base plane or are mixed in the paint

• Process the base plane carefully
• Avoid waste pollution
• Reapply the paint after the cavity is finished fully