When it comes time to paint the exterior of your home, there are only two ways it can be done. Do it yourself or hire a painter. If you decide to do it yourself, plan on putting a lot of time and effort into the job. If the choice is to have a painter do it, plan on paying a lot more for professional job. In either case, the process needs to follow guidelines that will allow the paint system to not only look good but also provide long lasting protection. Either way, if the process is not done properly with the correct materials, the paint system is going to fail prematurely and it will need to be painted again sooner than it should, hence more money!
What most homeowners don’t know is that paint systems are not all the same and that paint is a sacrificial coating that actually gives itself up in order to protect the very substrate it is adhering to. There are different substrates, meaning there can be different types of siding and trim on your home such as clear cedar, knotty cedar, pine, cypress, fiberboard, asbestos, Azek, stucco, EIFS, aluminum and of course vinyl, to mention a few. A quick note on aluminum and vinyl. Yes, they can both be painted and will look great for a long, long time provided the proper cleaning and prep is performed. In actuality, painted aluminum or vinyl will last long than painted woods because they do not absorb moisture. Painted aluminum and vinyl have been known to last over 15 years between paintings while the typical wood sided home will need to be painted every 7 to 10 years.
For this blog we are going to use a house that has clear cedar horizontal clapboard siding. Cedar is a resilient wood that many think can be left in it’s natural state but it will discolor and begin to soften with a possibility of rot after just a few years. In addition, cedar is loaded with tannin oils that will rise to the top and bleed through most paints and it will also interfere with the adhesion of paints, causing the newly painted cedar to quickly peel. Moisture escaping from the interior of the home as well as exterior moisture will quicken tannin to rise to the surface resulting in peeling and staining.
Cedar Chipboard Before
Cedar Chipboard After
The proven way to repaint a cedar sided home is to:
Scrape all the loose and peeling paint.
Apply a tannin release product such as Revive from Sherwin Williams or Restore from Benjamin Moore to the entire surface to be repainted. Let the solution set for about 15 minutes and then rinse off with fresh water.
Allow the surface to thoroughly dry
Prime the siding with a high quality slow dry oil primer. Avoid the fast drying types, they will not sink into the wood fibers as well as the slow drying type.
Allow the primer to dry for at least 48 hours.
Apply either a solid body stain that contains acid blockers or a high quality paint that has been proven to be compatible with your type of siding.
Keep the newly painted system clean. Inspect on a regular basis for mildew and mold. If present, clean by using a light wash system, do NOT powerwash.
Following these simple steps will increase the adhesion and longevity of the paint system.
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