Failures Wrinkling Why coatings wrinkle, shrivel or lift into ridges — thick films, heat, strong solvents and recoat timing — and how… 5 min read
Failures Undercutting & Rust Creep Why corrosion creeps under coatings from damage, edges and welds, how to measure undercutting, and how to repair and prevent… 5 min read
Failures Cathodic Disbondment Why coatings lift around holidays on cathodically protected steel, how to confirm cathodic disbondment in the field, and how to… 6 min read
Failures Pinholes & Outgassing What causes pinholes, bubbles and outgassing in coatings over concrete and zinc primers, and how to detect, repair and prevent… 5 min read
Failures Delamination & Adhesion Failure Why coatings peel from substrates or between coats, how to diagnose adhesion failure with field tests, and how to repair… 6 min read
Failures Yellowing & Discoloration Why coatings yellow or change color — UV on aromatic epoxies, alkyd dark-yellowing, heat, exhaust gases, chemicals — and how… 4 min read
Failures Sags & Runs Sags, runs and curtains in coatings: causes like excess wet film, over-thinning and cold, plus how to diagnose, repair and… 4 min read
Failures Orange Peel Orange peel in sprayed coatings: what it looks like, why poor atomization, viscosity and fast solvents cause it, and how… 4 min read
Failures Osmotic Blistering Osmotic blistering in coatings: how salts and soluble material draw water under the film, how to investigate blisters, and how… 4 min read
Failures How to Investigate a Coating Failure A step-by-step method for investigating coating failures: records review, site survey, field tests, sampling, lab analysis and root-cause reporting. 4 min read
Failures Saponification Why alkyd and oil-based coatings turn soft, sticky and peel on concrete, galvanizing and zinc primers, and how to diagnose,… 5 min read
