How can you tell if water is behind stucco?

Stucco Siding and Water Leakage

You'll likely see staining around the corners of windows or doors, possibly dark spots where at the roofline, and even hairline cracks. All of these are indicators of possible water damage and are signs of where water runs on or behind the stucco.

What happens when water gets behind stucco?

Water damage for stucco siding is highly problematic, and, if left untreated, holds potential for mold. Water damage can also result in cracks around windows and doors. Crumbling stucco and soft spots or indentations can be indications of very serious water damage.

How can I tell what is behind stucco?

You'd have to go through the insulation, through the sheathing, and through the house wrap, to see if there is any brick or other material before the stucco. At that point, there's a good chance you'll punch a hole right through the stucco anyway. The inside structure will tell ALL about the stability of the stucco.

Can water get through stucco?

Despite what many people think about stucco walls, stucco walls are not water-resistant. As a matter of fact water actually absorbs into the stucco. In most cases, the problem with water leaking through stucco is that the building envelope has been breached.

How do you fix moisture in stucco?

If you believe the stucco requires a minor repair, you can remove the damaged section of stucco, much like you would with damaged drywall or rotted wood. Patch the area with a stucco mix that matches your current exterior. Apply three coats of the stucco and allow for drying time between applications.

Identifying Water Intrusion Through Stucco

What does water damage look like on stucco?

Cracks and bubbles along the bottom edge of the wall — Resulting from a poor drainage system, water leaking through stucco walls shows up along the bottom edge. If you see dense cracks or odd bubbles, you're looking at the signs of stucco damage.

How do you waterproof stucco walls?

There are three key components to waterproofing a stucco house for the long term: Using a multiple layer approach to stucco installation, including an air gap in those layers, and correct installation of flashing around any openings in the stucco walls.

How do I know if my stucco house is bad?

What is under my stucco?

Sheathing is basically the “backing material” that can be found underneath the various layers of stucco that form the backing of residential and commercial buildings. They can be made out of wood, cement, gypsum, fiberglass and other materials.

How often does stucco need to be replaced?

Stucco is a very durable finish material with a typical life span of 50-80 years or more. Although it is one of the most durable surfaces available, it also features the lowest annual maintenance cost when compared to other siding materials. Stucco is a natural material consisting of an aggregate, a binder, and water.

Does a stud finder work on stucco?

Some newer construction buildings use a fiberglass product embedded in the stucco, so if there is no metal mesh, you can use the DeepScan® mode in your StudSensor™ or MultiScanner® stud finders. However, if the building has wire mesh in the stucco, then try these work around tips for locating studs behind stucco.

How can you tell the difference between stucco and EIFS?

Go outside and knock on an outer “stucco” wall of your home. If it sounds hollow, there is a good chance you have EIFS. If it feels like you are knocking on a brick wall, it is more likely that you are knocking on traditional “hard-coat” stucco.

Is there concrete behind stucco?

Stucco is Decorative

A stucco wall must be supported by some load-bearing material, such as wood or concrete. Stucco can be applied directly to any masonry-based wall, such as brick, concrete or cinder block.

How do you dry stucco?

When should I worry about cracks in stucco?

Larger cracks, we're talking 1/16 of an inch, are cause for concern. If you can slide your credit card into the crack in your stucco, it's time to seek some professional help. Larger cracks like these can indicate a structural issue that needs to be addressed prior to repairing the stucco.

What material is used behind stucco?

Traditional stucco is made from a mixture of Portland cement, fine sand, water, and hydrated lime. In addition, it may contain acrylic or glass fiber additives that improve its strength and flexibility.

Is there plywood behind stucco?

Stucco requires a rough surface that it can bond to, like the aforementioned masonry. Plywood products don't offer this, so lath needs to be applied, providing something for the stucco to bond to.

What does bad stucco look like?

While stucco is designed to naturally retain some moisture, lasting water spots on the exterior of your stucco home can indicate serious problems. Stucco water spots, commonly referred to as staining, can be seen as either white hazy streaks or as dark blotches in the color.

Is it expensive to re stucco a house?

Stucco siding installation on an average home costs $8,000 to $12,000 for materials and labor. To re-stucco a house, add $1 per square foot for stucco removal costs. Stucco installation costs about $7,500 for a small house, $11,000 for a medium-sized house, and $14,000 for a large house.

Can hairline cracks in stucco cause leaks?

#5 Depth of crack

Note that in a Traditional hard coat stucco, most hairline cracks only penetrate the finish coat, and not through the scratch coat or brown coat, thus they do not usually leak.

Does stucco need to be waterproofed?

Waterproofing is essential for almost every building project. If not properly sealed, structures will allow moisture to seep into materials, where it can become trapped. If this moisture does not drain properly, it can cause rotting, damage and mold. With this in mind, it's important to properly waterproof stucco.

Is there a sealant for stucco?

The best sealer for stucco is the Iso-Tek 8100. Best used as a water repellent sealer on natural stucco or as a primer and bonding agent for stucco that will be painted, the Iso-Tek 8100 is an industrial grade penetrating concrete sealer.

How often should a stucco house be painted?

Stucco is a popular exterior choice due to its durability. However, a stucco home will still need exterior maintenance. It is often recommended that stucco be painted every 5-10 years depending on its current condition.