Best Waterproof Paint for Exterior Walls 2025: Top 7 Long-Lasting & Affordable Picks!

Best waterproof paint for exterior walls 2025: Waterproof paint will act as the first line of defense against the effects of weather on your home. Not only will it increase the life of your walls and prevent moisture, but in some cases, it can also make your home more energy efficient.

If your walls hold water, heat will be lost from the building more quickly and your heating bills will be higher.

In this article, let’s discuss what’s required from a waterproof paint, what you should look out for, and then recommend some products.

Best Waterproof Paint for Exterior Walls

I’m going to keep it nice and simple and tell you two masonry products I think you should consider. The first is a good quality trade paint that will meet all your needs and is available at a reasonable price.

The second one is the best waterproof paint for exterior walls (based on my experience as a professional decorator and the research I’ve done over the years). However, it comes with a premium price tag.

Wethertex AP77

• Weathertex masonry paint is a little underrated, but it shouldn’t be.
• AP77 is manufactured in Yorkshire and is priced similarly to standard trade masonry paint on the market. 
• However, it is not standard masonry paint.
• It’s a silicone-based paint, so it’s very waterproof and breathable.
• You’ll find it easy to apply, has good opacity, and leaves a nice matte finish.
• It does everything masonry paint needs to do and is perfect for exterior walls.
• It is a product I use regularly in the summer months, and one I have total confidence in.
• The colors appear intense, and it doesn’t fade in the sun like other colors.

Emperor Paint Masonry Paint

Emperor paint is probably the best waterproof paint for exterior walls. It is very expensive, but it depends on the quality of resins used in the paint it is described as ‘hydrophobic’, which means it repels water. It is also very breathable.

• From an application and finish perspective, this masonry paint performs as well as anything else I have tried.
• It has great opacity, it is easy to apply, and is lovely and deep in tinted colors.
• The longevity of the paint is very impressive.
• You should expect a painted surface to last up to 25 years, which is quite remarkable.
• We’re talking about a person needing to paint an exterior wall about three or four times in their life!
• I’ve only been decorating for about 20 years, though, so I’ve never seen this before.
• The heat-retaining properties of this paint are also well documented and tested.
• By keeping your exterior walls dry like Emperor Paint, your home will require less energy to heat.

The Best Tools for Applying Masonry Paint to Exterior Walls

Whether you use one of the water-repellent paints featured on this blog or use regular masonry paint, having the right tools for the job will help. 

Paint Roller:

A long pile roller and a sturdy pole will help you apply generous coats of masonry paint and really work it into every gap in your wall. This is important for creating a completely waterproof layer. My choice would be a Purdy Colossus. 

Paint Brush:

You’ll also need a brush with a thick stock that will hold its shape. Avoid those skinny 4-inch brushes labeled “masonry brushes” at your local DIY shop because they’re useless.

If you want a cheap but good brush, go for the Kana Professional Synthetic. However, the best brush for applying waterproof masonry paint on exterior walls is the Purdy Monarch Elite XL. It can be expensive, but take care of it and it will last for years.