Why Is My Paint Streaky? 4 Causes and Solutions

That flawless, photo-worthy paint job you envisioned instead looks like abstract art—and not on purpose. So, why is your paint streaky? It could be due to problems with technique or tools, or it could be the fault of discounted paint. Either way, it’s time to figure out how to turn your DIY mess into a masterpiece. 

1. Bad Coverage 

Amateur painters may not apply enough paint or might spread the paint too thin, leading to streaky paint. If the wall beneath the paint peeks through consistently after rolling, the roller may not have enough paint for a full-coverage stroke. 

How to Fix It

Load the right amount of paint onto your roller before applying it to the wall. You want enough paint to completely coat the roller without excess paint dripping off the sides or squeezing out and leaving roller marks behind. 

2. Low Quality Paint 

Not all paint is created equal. In fact, sometimes it’s worth investing in higher-priced paint to avoid streaky walls. Cheaper paint sometimes lacks the binders or pigment you need to properly coat your walls. 

How to Fix It

Check the texture of your walls to see if you need to buy a better quality paint to cover your walls. Textured walls may need paint that includes primer to better coat the bumps. Your local painting company may also be able to recommend specific types of paint based on the project you’re working on.

3. Not Enough Prep

Proper wall preparation plays a big part in the success of your paint job. If you fail to sand down and clean your walls prior to painting, dust and debris could cause uneven streaks. 

How to Fix It

Lightly sand and clean your streaky walls, and consider applying a primer first or buying paint with built-in primer to achieve better coverage. 

4. Roller Issues 

Loading too much or too little paint on a roller with the wrong nap can cause uneven streaks, as can applying too much pressure to your roller, which can squeeze out paint on the edges and leave behind roller marks. 

How to Fix It

Purchase the right type of nap roller for the paint job you’re doing (or fixing). For example, most interior walls and ceilings call for a 3/8 to 1/2-inch nap roller, while a 3/4 to 1-inch nap is better for textured surfaces like stucco or brick. You’ll also want to apply an even coat of paint to your roller and apply even, consistent pressure to avoid streaking. 

When to Call a Pro

A streak or two is something you can likely tackle yourself with a few extra brush strokes or touchups. However, if the streaks are extensive, cover several walls in multiple rooms, or require getting on a ladder to fix, it’s best to call a local painting professional. The cost to paint the interior of a house ranges from $966 to $3,087, depending on the size of your home and how extensive the streaks that need covering are. If that’s in your budget, it may be worthwhile to reach out to the experts.