LESSONS LEARNED • MARCH 2026

ACGI Blog: How long does exterior house paint last in Oregon

How long does exterior house paint last in Oregon? Many factors will dictate how this question will be answered. Factor # 1- Substrate on your home or commercial building Factor # 2- What type of paint you are applying to the substrate Factor # 3- Are you applying a primer coat before you do a top-coat? If so is it oil or water based primer? Factor # 4- Location of the building or home. Factor # 5- What will the application process be by the licensed contractor? Factor # 6- What weather and humidity will be present when the application of primer and or paint is taking place on your painting project? Factor # 7- What is the chemical composition of the paint that you are using? Factor # 8- What fillers and binders are used in the compositional make up of the paint? diatomaceous earth, talc, lime, barytes, clay, etc. Factor # 9- What hiding pigments are used in the components of the paint? titanium dioxide, phthalo blue, red iron oxide Factor # 10- What is the binder in the paint? Binders include synthetic or natural resins such as alkyds, acrylics, vinyl-acrylics, vinyl acetate/ethylene (VAE), polyurethanes, polyesters, melamine resins, epoxy, or oils. Binders can be categorized according to drying, or curing mechanism. The four most common are simple solvent evaporation, oxidative crosslinking, catalyzed/cross linked polymerization, and coalescence. There are others.

Source: http://en.wikipedia.org/wiki/Paint

Written by ACGI Homes