Poor Flow And Levelling

Poor Flow And Levelling 1

Definition Failure of paint to dry to a smooth film, resulting in unsightly brush and roller marks after the paint dries. Causes Use of low-quality paint Use of low-quality tools/wrong roller cover Re-brushing or re-rolling areas that are partially dried Too much heat – usually above 90 ºF – or too little humidity, which causes […]

Surfactant Leaching

Surfactant Leaching 2

Definition Surfactant leaching appears as blotchy, sometimes glossy, tan or brownish spots on the surface of latex paints. Surfactants are a necessary ingredient in making paint. They evaporate and are not part of the paint film; their appearance does not harm it any way. In most cases, the leaching occurs slowly and is washed away […]

Poor Alkali Resistance

Poor Alkali Resistance 3

Definition Colour loss and overall deterioration of paint film on fresh masonry. Causes Applying oil-based or vinyl water-based paints to new masonry that has not fully cured Solutions Allow fresh masonry surfaces to cure for at least 30 days before painting. If this is not possible, use a high-quality, alkali-resistant primer. Test alkalinity of the […]

Galvanised Metal

Galvanised Metal 4

Definition Paint has lost its adhesion to a galvanized metal surface. Causes Inadequate or improper surface preparation Failure to use a primer before applying an oil-based or vinyl water-based paint Failure to sand baked-on enamel finishes or glossy surfaces before painting Solutions Remove all loose, peeling paint down to the bare metal. Clean the exposed […]

Fading

Fading 5

Definition Premature and/or excessive lightening of the paint colour that typically occurs on surfaces with a southern exposure. Fading/poor colour retention can also be a result of chalking of the paint film. Causes Use of a low-quality paint, or interior grade of paint for an exterior application Use of a paint colour that is prone […]

Efflorescence

Efflorescence 6

Definition White deposits (soluble salts) that appear on concrete, brick, block, stucco, mortar and other masonry surfaces when exposed to moisture. In addition to creating an unattractive appearance, deposits can grow and will cause adhesion problems if not properly removed before repainting. Causes Failure to properly prepare the surface by removing all previous salt deposits […]

Cracking

Cracking 7

Definition Splitting of the paint film through at least one coat, leading to failure of the paint. Hairline cracks appear initially, but progress to paint chips falling off the surface – or flaking – and severe cracks in the surface will appear. Complete failure of the paint can occur if left untreated. Causes Over-thinning of […]

Chalking

Chalking 8

Definition The formation of fine powder on the surface of the paint, due to weathering. Progression All paints chalk to some degree; it is a normal, desirable way for the paint film to wear. Quality paints may chalk mildly, but still maintain a sound surface for many years. Medium and heavy chalking can cause color […]

Burnishing

Burnishing 9

Definition Increase in gloss or sheen of the paint film when rubbed, scrubbed or brushed up against; more noticeable in darker colours. Causes Use of a flat paint in high-traffic areas where a finish with a higher sheen level would have better resistance to burnishing Frequent washing and spot-cleaning Use of abrasive cloth and/or cleaners […]

Blistering

Blistering 10

Definition Lifting of the paint film from the underlying surface, which appears as bubbles or blisters in the paint, usually caused by heat, moisture or a combination of both. This condition can eventually lead to peeling of the paint if not corrected. Causes Painting in direct sunlight or on a surface that is too hot […]