How Does Water Get into Stucco Walls?

How Does Water Get into Stucco Walls?

Water penetration through stucco may be a very severe condition. While stucco siding is an enticing option for home siding due to its style, several issues may lead to water infiltration if not installed correctly.

Because stucco water penetration may lead to mold and other water damage issues, it is vital to repair it as soon as possible. Understanding how stucco water intrusion develops is the first step toward preventing and dealing with it if it happens in your home.

How Can Water Infiltrate Stucco?

Stucco is intended to give a strong and smooth siding option that can handle water without issue, but how can stucco water penetration happen? Water may penetrate stucco siding by direct absorption, cracks, or improper installation.

Direct Infiltration

Stucco is supposed to be waterproof when sealed, although this is only sometimes the case. Many factors might cause water to penetrate the stucco surface rapidly, resulting in a developing stucco water intrusion issue. Water may penetrate rather deeply after passing the surface due to wicking.

Water may infiltrate stucco if it is continually in touch with moisture. As long as the surface is not persistently moist, it should be able to withstand the weather. Water, on the other hand, has the capability of entering. If you have sprinklers that are mistakenly keeping the walls moist or any other source of constant water, you may have stucco water infiltration.

Entering Through Cracks

Stucco is only helpful as a water barrier, provided it is sturdy and unbroken. Water may enter via fractures for a variety of reasons. They may induce swelling and movement once inside, resulting in bigger holes that enable more water to enter.

Cracks may form for a variety of causes. When the outside of your house ages, little cracks may form. This is otherwise, in and of itself, a problem. structural problem. However, it may enable water to enter, causing mold and other issues.

Improperly Installed Flashing

Although stucco provides a strong barrier, it cannot protect your whole house. Your stucco siding will come into touch with windows, the underhang of your roof, and other fixtures and structures at different locations. Flashing and moisture barriers keep moisture out of these areas.

Improper installation, on the other hand, may result in stucco water penetration in specific spots. Remember that even if just a little water gets in, it may cause catastrophic damage over time.

What Factors Can Contribute to Water Intrusion?

A multitude of different factors may induce water intrusion. Various exterior installations, plant growth on the stucco surface, and other elements might all have an impact.

It is essential to be informed of possible hazards and dangers. They may be causing subtle damage to your home over time, eventually causing mold and rot. Water entry may be highly harmful, so evaluate these crucial places to protect your stucco siding.

Planters and Plants Too Close to Walls

Planting too near to external walls could cause problems. The basic reality is that soil holds massive amounts of moisture. Moisture will be drawn inside gradually if dirt touches your stucco façade.

Planters, flowerbeds, and garden boxes on the side of your house might be creating major problems. Any plant that grows too near your siding may generate an abnormally wet atmosphere that harms your siding's long-term upkeep.

Light Fixtures

Outside light fixtures are one of the most prevalent causes of stucco water penetration. Drilling a hole through the stucco for the light fixture box, often deficient in a moisture barrier, is one of them. As a result, rainwater may readily permeate the inside of the walls.

Light fixtures are the most prevalent problem, but they are far from the only one. An identical issue might emerge with any outdoor installation. Any exterior tap might lead to water penetration. Water might enter the house if a deck or patio is not properly segregated.

You could experience a similar problem if your home has numerous siding materials. Because each kind of siding has unique issues, ensuring that any such seam is maintained correctly may be challenging. Having your siding properly installed helps avoid this problem.

Ivy and Other Growth

Is ivy growing on your stucco siding? You may think it's gorgeous, but it might harm your property. Ivy is a plant that attaches itself to walls through rootlets. These protrusions may pierce the stucco's surface, enabling moisture to enter.

Ivy may cause substantial damage and enable significant moisture ingress over time. It's vital to include ivy since most homeowners don't believe an appealing plant can cause damage, but don't forget about other potentially toxic plants.

Moss may do just as much as, if not more, harm to your stucco siding. Its roots can reach deep into the earth, allowing moisture to enter and disseminate through the walls. While homeowners are less likely to let moss grow unchecked on their property's exterior, you must act immediately to minimize harm.

Deal with Stucco Water Intrusion the Right Way

Do you suspect that your house has stucco water intrusion? If this is the case, call Gold Star Stucco & EIFS Repair / Dayton Stucco to learn more about your alternatives. We can remove and repair damaged stucco, apply treatments to help prevent future problems and offer siding options.

Why Consider Working With Us?

Having worked over 20 years on the field, we at Gold Star Stucco, have been perfecting the art of standardized and/or customized stucco finishes.

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Our Featured Services

Below are the stucco and related services we offer.


From a quick to an in-depth review of your establishment to see if anything is amiss and would require fixing/replacement. 

We accomplish this either through the use of our high-end inspection equipment or the critical eye of our experienced professionals.
Our methods aim for both longevity and safety, applying the latest techniques for the best possible results. 

From removing stains to filling up holes, we have the solutions you need for all your stucco problems.



Don't wait until it's too late! Water damage on stucco is notorious for getting out of hand. Since it's not as noticeable until a good amount of damage is done, it's best to have frequent inspections to make sure that your home is safe from possible cracks and mold -- common symptoms of water infiltration.
Unlike most paints in the market, stucco paint is very important in adding extra protection your home/establishment.

Understanding that, we've come prepared with a wide variety of paints both in color and other practical benefits!



Also known as the "exterior insulation finish system", this is a "wall-padding" method that provides efficient insulation without the extra expense. 

Our team of professionals are skilled on EIFS construction alongside our group of consultants ready to help you with your exterior finish decisions.
Even the most durable material in building construction can get damaged in time. 

Here is where we come in with our experience and know-how on the field and our professionals to help deal with any cement stucco repairs/build.



Repair and replacement of stucco is an essential part of maintaining a building’s integrity. Thus, it's important to follow through with corrections as they are advised by the professionals to assure your home/establishment's durability and the safety of the people staying in it.


Gold Star Stucco's residential and commercial work is always accomplished with excellent craftsmanship for beautiful and durable results.

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