Spray vs Rolling Exterior Paint: How We Decide on Every Project

When we quote for exterior painting projects, homeowners often ask us if it’s better to paint by rolling vs spraying exterior paint. With over 15 years in the painting industry, we know that unfortunately, there isn’t a catch-all answer that applies to all projects and homes: in some cases it can be better to spray, and in some cases it can be better to roll. In this post, we’ll discuss the differences of each, the positives and negatives, and the typical surfaces and situations where we choose to spray or roll. 

Rolling vs Spraying Exterior Paint: What's the difference?

Method	Rolling & Brushing	Spraying
Finish	Textured	Smooth texture
Speed	Faster set-up time, slower application	Slower set-up time, faster application
Material Usage	Lower	Higher (due to overspray)
Overspray Risk	None	Thorough masking is required
Best For	Textured surfaces, smaller areas, projects with lots of nearby landscaping, touch-ups	Doors, shutters, large uniform areas with few obstacles near by

The two key differences are:

• Rolling imparts a texture determined

  by the type of paint roller nap you use, while spraying paint is relatively textureless and smooth.

• Spraying requires more set-up ahead of time to properly mask off areas that aren’t being painted, while rolling doesn’t require much of a setup at all.

What is a Roller Nap?

Roller nap is the fuzzy part of the roller that refers to the length of the material the roller cover is made out of. Different types of naps are suitable for different surface types and desired finishes. The thickness of the nap determines how much paint it will apply to your walls and with what texture. 

Longer naps can reach into every surface and crevice, making them more suitable for heavily-textured surfaces. Thicker naps apply paint with a heavier hand - which saves you time -  but this leads to a rather textured finish (almost like orange peel). Shorter naps tend to provide a smoother finish.

Why Painters Back-Roll After Spraying

Many professionals will utilize back-rolling after spraying, which is using a roller to redistribute still-wet paint. This is done primarily for two reasons: to mimic texture and to ensure even coverage. 

While spraying, paint is directly applied to the surface but it typically isn’t able to penetrate into every single groove. This matters more for porous surfaces like fresh drywall and wooden siding. For porous surfaces in particular, we always go in with a roller after spraying to ensure that the paint gets thoroughly pressed into all surfaces, which will result in an even, consistent finish once dry.

Back-rolling can also be useful when matching the texture of previous surrounding surfaces. Spray texture is quite smooth in comparison to texture from a roller, so back-rolling helps it look more cohesive.

How We Decide Between Rolling and Spraying

More often than not, we are using rollers and brushes. While spraying is quicker in application, there is one important factor to be aware of: overspray. Overspray is the fine mist of paint that drifts beyond the surface you’re spraying. Instead of the paint applying only where you want it, overspray floats through the air and can settle on anything nearby.

When spraying, you must ensure that all nearby areas and surfaces are covered thoroughly with poly sheets or paper and that they are taped down. This is incredibly important in order to prevent paint from getting everywhere, but it’s also time consuming. 

In comparison, rolling requires little-to-no setup time: you pour paint into a roller tray and begin rolling. The application itself can take longer, but depending on the space, rolling can still save you time. If significant areas need to be covered with poly sheets, it may just be more worthwhile to roll instead of spraying.

When we decide between rolling and spraying, we consider how much is in the area nearby that will need to be covered. If there is a significant amount of things nearby (like neighboring houses, landscaping, cars, or windows), we tend to prefer rolling. Masking off entire areas is time-consuming and we generally think spraying isn’t worth the hassle in these situations, unless it’s specifically requested by the customer.

How Far Can Overspray Travel? Does Wind Affect it?

Yes, wind is one of the biggest factors in determining how far overspray can travel. On a calm day without wind, overspray from a sprayer typically settles within 5-20 feet, since fine paint particles dry quickly in the air. Unfortunately, even just a light breeze can carry those particles further. In windy conditions, overspray can travel 50 feet or more. 

This is why taking the time to properly mask off and technique is important. Paying attention to wind direction and speed before deciding to spray is important, and nearby cars, landscaping, and neighboring homes all factor into whether spraying is worth the risk on a given day.

Does Spraying Cost More or Less Than Rolling?

Generally, in terms of labor cost, spraying can be cheaper than rolling. However, it’s important to consider two factors: the time it takes to prep and the material cost.

Spraying uses more paint due to overspray. When gallons of paint range from $50-120 in Canada, this can add up. 

Spraying is faster, but rolling beats spraying when there is a significant amount of masking off time required. Each project is different, but you can visualize this yourself by imagining all the little things that would have to be covered to protect them from paint.

For example, if you were to be getting your entire house painted, setting up a spray booth one time for all the doors in the house would be cheaper than individually brushing and rolling each door. There isn’t much masking required and we can do most of the work utilizing the spray booth which only needs to be set up once.

On the other hand, if you were to be getting the exterior of your house painted and you have a significant amount of plants, decor, and other houses are very close by - rolling will likely be cheaper than spraying, as all of these things would have to be meticulously covered and sealed off to prevent them from accidentally getting painted.

In Conclusion

So, rolling vs spraying exterior paint, who wins? In our experience, one doesn’t tend to cost more than the other on average, since it’s all dependent on the space. This is why we look at each individual space. If you’re deciding on an exterior project, take a quick walk outside and assess the space. Are there a lot of things nearby that would need to be covered? What type of finish are you looking for? Are you painting textured surfaces like brick or stucco? All of these things help indicate whether or not you should be looking to have your home painted or sprayed.

Once you've walked through those questions, you'll usually have a pretty good sense of which method makes sense for your project. If you're in the Kitchener-Waterloo, Cambridge, or Guelph area, reach out today to book your painting consultation - we'll walk your home with you and tell you whether or not rolling or spraying makes more sense.