Paint Problems and How to Prevent Them
Knowing why paint fails is the best way to get a long-lasting, problem-free paint job.
Although you’ve probably never thought about it, paint manufacturers don’t actually make the ingredients that they use in their paints. Instead, they buy the components from chemical companies and combine them to their own specifications. To ensure that the paint companies are getting the best-performing ingredients, the chemical companies employ paint chemists to formulate and test paint in many ways, including real-world scenarios.
I recently had the chance to meet with employees from the Dow Chemical Company and a team of technical experts who test paint for the Paint Quality Institute (PQI) in a complex near Philadelphia. This “paint farm” has more than 40,000 samples and includes painted building materials ranging from vinyl and fiber-cement siding to steel bridge parts and weathered decking. The complex even includes special racking to hold some of the samples upside down to simulate how paints perform under porch ceilings and soffits, where they won’t be washed by rain.
It’s the perfect environment to investigate the best ways to fix paint failures, from blistering, chalking, cracking/flaking, and mildew, all the way to peeling, efflorescence, frosting, poor hiding, and tannin staining.View PDF