Common Problems with Exterior Painting

Problems With Exterior Painting

Exterior Painting

Painting the outside of your home isn’t as easy as some painting blog owners make it out to be. Still, you can turn it into a DIY project if you are aware of some of the common problems many homeowners experience with exterior painting. If you familiarize yourself about the reasons why exterior paint fails, you’ll be better able to paint your house the right way. This will save you from a lot of hassle in the long run.

Here are some of the problems with exterior paint:


Bubbling is caused by trapped water vapors. You can avoid this problem by ensuring that the exterior surface of the house and the area underneath the siding is completely dry before you begin the project. Also, avoid painting in hot temperatures, as it could lead to bubbling and blistering. For this reason, many experts recommend painting during cooler months.


Cracking and flaking are usually caused by low quality paints and poor preparation. Cheap paints don’t adhere as well as higher quality paints. Also, spreading the paint too thinly over bare wood may lead to cracks. In windy weather, latex paints can dry too quickly, thus causing flakiness. Avoid these problems by using the ideal type of paint and making sure that the surface is prepared.


To prevent peeling on wood, you must clean the surface of all dirt, grease and dust. If there are still layers of old paint on a surface, remove all of that old paint before putting on a fresh coat. You might also want to use a vinyl spackling compound to prepare problem areas. You will want to sand the surface and apply an oil-based sealer over any patches.

Rusty nails

Rust appearing in exterior paint could be a sign that rusty nail heads have been left in the siding. To prevent this from happening, replace the nails with rust-resistant fasteners such as hot-dipped galvanized nails. If there are any nails you can’t remove, sand the head and apply a rust converter to it.


Any black, brown, or gray spot is an indication of mildew. As with many other problems, mildew is usually caused by low quality paints applied directly onto bare wood. Remove existing mildew with diluted bleach, and allow it to sit for a few minutes before wiping it off. To prevent mildew problems in the future, always prime surfaces. Use a quality latex acrylic paint for areas susceptible to moisture.


If you are dealing with a vinyl surface, buckling may be a problem. The best way to prevent is to paint the vinyl with acrylic latex in a light colour. Dark colours absorb more heat, which causes the siding to expand.


When there is a powdery residue on a painted surface, either the paint was applied too thinly or the area wasn’t primed properly. Make sure that you use the right type of primer for the project and that you apply sufficient amount of paint. Don’t try to thin it out too much.

As long as you avoid making these mistakes and do research on paint, primer, and other products you need to use, your exterior painting efforts should be worthwhile.