Transcription of 6. Common Defects
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6. Common Defects
Common defects306. Common DefectsA paint defect is in many cases due to a number ofcauses. In some cases, several Defects may occursimultaneously and hinder the determination of thecauses and redemption achieve good painting work, applicators and sitesupervisors should understand the causes andpreventive measures of Common Defects that occur atdifferent stages of works. They should also be familiarwith the remedial measures that can be taken to rectifyany unforeseen general, paint Defects can occur during: Paint storage; Application, drying and curing; and Service to Table to for details on the causes,preventive measures and remedial methods for thesecommon of pigment to the bottomand failure to Insufficient stirringduring storage Storage for longduration or underexcessively warmcondition Excessive dilution ordilution withunsuitable materialsTable Common Defects During Paint StoragePreventive Measures Store asrecommended bymanufacturer Avoid direct sunlightand long storage Dilute withappropriate thinnersas recommended bymanufacturerRemedial Methods Stir paint to ahomogeneousconsistency Employ mechanicalstirring for heavysettling Move to appropriatestorage conditions asrecommended bymanufacturer Discard paintSkinningFormation of a layer of skin on thecontainer.
and alkyd resins, which are easily affected by light, heat or environmental contaminants • Use non-yellowing paints • Prepare surface and repaint with non-yellowing paints Saponification • Use of alkyd-based paints on cement based materials. …
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