.WOOD COATING - Recommended coating system for Wood Substract

 


 POOR IN CAN STORAGE
Pigment settled to the bottom and difficult to be stirred homogeneously
COMMON DEFECTS :-
Expire shell life of the paints.
Excessively warm storage.
Using unsuitable thinning materials.
Excessively thinning reducing the specific gravity and viscosity of the paint medium.
   
SOLUTIONS :-
Recommended to store in accordance specification.
Prevent from storing in warm condition.
Prevent from long storage.
Thin only with right thinners.
   

 

 POOR COVERAGE AND OPACITY
The subsurface color shows through the newly painted surface, giving an uneven blotchy look or a slight discoloration.
COMMON DEFECTS :-
Insufficient pigmentation to provide proper coverage and opacity.
Overstretching of paint.
Over thinning the paint has the same effect.
Painting on a surface that is especially smooth or slick.
Using poor quality brushes or roller that can't lay down a good coating.
Inappropriate mixing of paint.
Application of paint that is much lighter in color that the surface below.
   
SOLUTIONS :-
Follow the thinning ration as specified.
Use a good grade of paint and equipment.
To recoat with correct application of good quality paint.
Coat a layer of primer on subsurface before painting; It is always better to have the primer tinted toward the color of the paint.
Paint more than one coat for bright colors, for example white, semi-gloss or full gloss paints.
 POOR DRYING ON APPLICATION
COMMON DEFECTS :-
Applying too thick paint film onto the substrate.
Inappropriately mixing of base paint and hardener for two component paint.
Defective paint.
Poor ventilation.
   
SOLUTIONS :-
Apply an even coat of paint at sufficient film thickness so that it can cover well.
Follow the paint specification when mixing two component paint.
Apply paint at good ventilated areas.
Discard paint if it is defective.
   
 POOR EXTERIOR DURABILITY
Deterioration of the paint film, resulting in excessive or rapid loss of luster of the top coat, chalking and color fading.
COMMON DEFECTS :-
Due to pigment flocculation in the paint system
Due to poor light fasteners of the pigments.
Use of an interior paint outdoors
Use of lower grade gloss alkyd or oil-based paint in areas of direct sunlight.
   
SOLUTIONS :-
Direct sunshine can degrade the binder and pigment of the paints, causing it to chalk and lose its gloss.
All types of paint will lose some degree of luster over time, lower quality paint will generally lose gloss much earlier than better grades.
Hence use good quality paint like Duraway Paints.
   
 WRINKLING
A rough, crinkled paint surface, which occurs when uncured paint forms a "soft skin".
COMMON DEFECTS :-
Paint applied too thick.
Painting is done during extremely hot weather or cool damp weather, which causes the paint film to dry faster on top than on the bottom.
Exposing uncured paint to high humidity levels.
Painting over a dust or dirt surface.
   
SOLUTIONS :-
Ensure the top coat is completely hard dry, before applying the second coat of the paint.
Scrape or sand substrate to remove wrinkled coating.
If applying a primer, allow it to dry completely before applying top coat.
Repaint it avoiding extreme temperature with top quality paint.
   
 

 

 

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