Problem Solving (4)

      1.Mud Cracking

Deep irregular cracks that resembles dried mud.

What causes it?

·Applying paint too thickly on porous/uneven surface for attempting to hide substrate with low covering paint

·Painting heavy coat of paint on embossed or textured surface

·Surfaces that are not prepared properly; contaminants were not removed

·Paint is allowed to build up in corners during application

How to solve it?

·Remove the affected area by scarping and sanding. Sand the area smooth and wipe it clean

·Repaint after applying appropriate primer

·Follow label instructions for proper surface preparation, and appropriate film build

·Determine the correct roller cover; on smooth surface, fine finish roller with nap size 1/4” or 3/8” is sufficient, on textured surface; exterior roller with nap size 3/4″ or greater is sufficient

·Use quality paint that minimize applying too thick a coat of paint for covering

 

       2.Obvious Repair (Touch-up)

 An area where, has noticeable difference after repainting or repair.

What causes it?

·Touching-up the area with a different tool from  a tool used for previous application; eg.  Using a roller for touching up on brush applied surface.

·Touching-up with paint batch that is different from the previous application.

·Repaired area has different texture from the surrounding surface.

How to solve it?

·Keep sample from original paint for touching up or note batch number of original paint.

·Try to make repair work as close to original or feather repair to avoid sharp edges between repaired area and surrounding.

·Use same tool to apply touch-up.

 

       3.Flaking

Lifting of paint in the form of flakes from underlying surface.

 What causes it?

·Inadequate adhesion and flexibility of low quality paints

·Oil based paints applied on latex paints

·Applying paint on a substrate with poor surface preparation

·Paint drying too fast due to environmental conditions

·Paint becoming brittle with age, failing to expand and contract with temperature and humidity changes

·Extreme cracking or alligatoring caused by a second or third coat of paint that is applied before the previous coat dries completely, or whrn the undercoat is incompatible with the finish coat.

        How to solve it?

·Remove any flaking paint by scraping, sanding or scrubbing wire brushing

·Feather the area to surrounding by sanding and repaint

·Sand weathered wood to fresh prior to paint

·Do not allow wood to weather before painting

 

         4.Fading

Excessive lightning of the paint colour on surfaces that are exposed to sunlight.

What causes it?

·Inadequate adhesion and flexibility of low quality paints

·Oil based paints applied on latex paints

·Applying paint on a substrate  with poor surface preparation

·Paint drying too fast due to environmental conditions

·Paint becoming brittle with age, failing to expand and contract with temperature and humidity changes

·Extreme cracking or alligatoring caused by a second or third coat of paint that is applied before the previous coat dries completely, or whrn the undercoat is incompatible with the finish coat.

How to solve it?

·Remove any flaking paint by scraping, sanding or scrubbing wire brushing.

·Feather the area to surrounding by sanding and repaint.

·Sand weathered wood to fresh prior to paint.

·Do not allow wood to weather before painting.