Airless spray painting is the new norm for exterior painting due to the many benefits that the method offers.
Although spray painting creates a beautiful, even appearance, and can be applied in a thicker coating than the traditional brush-and-roll application, the sealing and adhesion isn’t always satisfactory on rougher surfaces. This cannot be overlooked, because proper adhesion to a surface is vital to a quality, long-lasting paint job.
Back brushing is the process of working the paint into a rougher surface after it has been sprayed. Back brushing should be done while the sprayed paint is still wet. With a brush or roller, work the paint into the cracks and crevices on the surface. This helps create a better bond to the surface, as you are now able to work the paint in to the smaller imperfections.
Back brushing is an important step in an exterior paint job for rougher surfaces and just about any type of surface that has become cracked and weathered over time by being exposed to the elements.
The following steps further explain the benefits of this two-step method:
Allows for faster application of product and helps in the prevention of lap marks and brush marks
Keeps paint fresh in hoses until applied to the surface, preventing premature drying
Allows paint to uniformly cover rough surfaces or hard to reach places
Minimizes mess during painting
Forces product to penetrate the surface and seep into cracks/pores
Evenly distributes applied product over all surfaces, allowing for a smooth, uniform final finish
Ensures every corner, joint, and surface has a proper coat of paint applied