
What is the best weather to apply stucco?
The best conditions to apply stucco are on overcast days with the temperature in the 50-60 F range. Since you can control when the stucco is applied, do not apply any stucco if the temperature will drop below 32 F within days of applying either the base or finish coat of stucco.
How thick do you have to be to apply stucco?
Applying stucco is almost always a two-step process. You typically apply a base or scratch coat that is approximately 3/8-inch thick. The stucco mixture is a combination of clean sand, masonry cement and Portland cement.
How do you apply stucco directly to a wall?
After the bonding agent has been allowed to dry, the stucco can be applied directly to the wall. The application of the stucco should begin with a scratch coat, a 1/4" to 1/2" layer of mortar, which is applied directly to the structure and allowed to slightly harden. 3.
How does weather affect stucco work?
HOT AND COLD Helpful tips for placing plaster/stucco materials in hot and cold conditions. Weather has a significant effect on the application requirements and nuances of plaster/stucco seasonally and it can sometimes be daily. Contributing factors are: temperature, humidity, wind and the exposure of the sun.

What temperature is too cold for stucco?
For best performance, the temperature of newly applied stucco should be maintained at a minimum of 40 degrees Fahrenheit. In many cases, this can be achieved by heating the structure and covering the exterior surfaces. As temperatures drop lower, plaster ingredients can be heated before mixing the stucco.
Can stucco be done in winter?
Stucco can be attainable in the winter by use of an enclosure and a source of heat. Why is this? The pros of stucco in warmer temperatures are that the EIFS components that are a weather barrier, Styrofoam adhesive, base coat and finish coat that contain water evaporates.
Does stucco crack in cold weather?
Not So Good News During the Winter Months This moisture can swell and freeze, causing additional damage to your finish. Stucco is susceptible to cracking, and what looks like a small problem now may grow into a larger one down the road.
Why is stucco not used in cold climates?
Stucco Siding in the Winter This is because the siding material is known for dry, arid climates. Although stucco siding insulates extremely well (keeping heat out in hot climates), it absorbs water easily and does not perform well when exposed to a lot of moisture.
How long does stucco take to dry?
Stucco manufacturers typically call for moist-curing stucco a minimum of 48 hours. There are two widely accepted methods for curing stucco: surface-misting (or fogging) and the double-back method. The best curing method is surface-misting with water.
How long should stucco cure before rain?
Stucco needs to dry for at least 48 hours before it rains. Depending on what stage of the installation process you're at, rain can affect the drying process by causing the mixture to become too wet and slide off the wall or alter the stucco's appearance when it does dry.
What climate is best for stucco?
A hot, dry, and desert-like climate creates a perfect environment for stucco since stucco does not do well with ongoing heavy precipitation or excessive moisture.
How long does stucco last on house?
50-80 yearsStucco 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.
Why are houses in Florida made of stucco?
Houses in Florida are made of stucco because stucco is fairly inexpensive, creates a great finished look, and is easy to apply to homes constructed with concrete blocks. It is less popular in some regions because it can be damaged as a house shifts and settles over time.
Why are houses in California made of stucco?
In the West and Southwest, where brick and stone were too scarce and too pricey to use as building materials, stucco became the siding of choice. Hundreds of thousands of affordable homes were slathered with the stuff.
Does stucco hold up in snow?
Stucco typically needs to terminate roughly 4 inches above grade. When snow totals reach upwards of 12 inches, like those from Winter Storm Jonas, moisture can creep up and wreak structural damage on framing. Come springtime, that water will have nowhere to drain but behind the stucco and into your home.
Does stucco hold up in snow?
Stucco typically needs to terminate roughly 4 inches above grade. When snow totals reach upwards of 12 inches, like those from Winter Storm Jonas, moisture can creep up and wreak structural damage on framing. Come springtime, that water will have nowhere to drain but behind the stucco and into your home.
What climate is stucco best for?
A hot, dry, and desert-like climate creates a perfect environment for stucco since stucco does not do well with ongoing heavy precipitation or excessive moisture.
What's the lowest temperature you can plaster in?
32 degrees FahrenheitAt 32 degrees Fahrenheit (0 degrees Celsius) and below, plaster will freeze on the wall and cause weakening of the plaster. Damage to the plaster can be so severe that you can rub it off the wall using only your hand.
How long does a stucco exterior last?
50-80 yearsStucco 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.
Can you move to Arizona to install stucco?
This means you don’t have to move to Arizona or New Mexico if you want to get a stucco exterior on your home—people throughout the Midwest and Atlantic Coast regions are perfectly capable of benefiting from stucco surfaces, as it’s able to handle a wide range of temperatures and weather conditions.
Can you repair stucco in the winter?
There is always the possibility that some of the winter elements ( like snow, ice or freezing cold) could do some damage to your home’s exterior and the stucco, but the good news is that stucco is usually pretty easy to repair. For example, say you’ve had a lot of snow built up around your house during the winter. In such a case, it’s likely that the bottom of the stucco will see the harshest impact, as it will have been exposed to constant moisture, which could encourage the formation of cracks of varying sizes. The good news is that if cracks are less than 1/8 inch wide, you can repair the stucco yourself without even having to call out a professional. If they are larger, you can hire a stucco contractor and they’ll still be able to make the repairs so long as you do not delay.
Is stucco a porous material?
While stucco can be damaged when exposed to the elements, it is a generally durable material. It features a barrier underneath that prevents moisture from getting into your home, which is good when you consider stucco is a naturally porous material. Stucco contractors understand how to install stucco with a proper base layer to prevent issues that could result from long-term moisture exposure.
Is stucco good for winter?
The good news is that stucco is quite weather resistant, which means it can be a great choice no matter what type of climate you’re in. Stucco can actually be quite beneficial for homes that see a lot of cold weather throughout the winter. As always , the most important thing is to just make sure you’re working with a contractor who reliably provides a high level of work.
How does stucco evaporate?
After the hydration process, the water simply evaporates leaving behind a solid stucco cladding. During the hot summer months evaporation happens really fast, and in the wind, even faster. So then, during the hot times, slowing down the evaporation of the stucco cladding, or adding moisture back into the stucco cladding becomes an important factor. Allowing water to evaporate quickly does compromise the hydration process and the integrity of the stucco cladding.
Can you mist stucco on a hot wall?
When it comes time to do the finish, don’t try to spread it on a hot wall. You will have a lot of frustration, little working time and the finished product may look less than desirable. For stucco walls you can mist the brown coat to drop the surface temperature, the key word being “mist.”.
What are the factors that affect plaster application?
Contributing factors are: temperature, humidity, wind and the exposure of the sun.
What is the temperature of hot weather?
Hot weather is defined as ambient temperature exceeding 100 degrees Fahrenheit (37.8 degrees Celsius) or 90 degrees Fahrenheit (32.2 degrees Celsius) with a wind velocity greater than 8 mph (12.9 km per hour). Compounding factors include low relative humidity and direct sunshine. Below are some of the effects on the plaster:
When was stucco installed?
Stucco textures are as varied as plants in a forest. This texture looks like it did the day it was installed in 1916. PHOTO CREDIT: Tim Carter
How thick is stucco?
Applying stucco is almost always a two-step process. You typically apply a base or scratch coat that is approximately 3/8-inch thick. The stucco mixture is a combination of clean sand, masonry cement and Portland cement. Masonry cement is often a mixture of Portland cement and hydrated lime.
How wide should a stucco wall be?
Before you start to apply the stucco to your home, I suggest you practice first. You can do this by building an 8-foot wide by 8- foot wide wall from 2x4's. Cover the studs with 1/2"-inch-thick cement board. It is important that you get comfortable with the tools and techniques of applying the stucco.
Do it yourself stucco?
The biggest challenges one faces in a do-it-yourself stucco job is mixing the stucco and getting it to the work location. To get professional results, the person applying the stucco needs to be fresh and concentrating on applying the material, not worn out from mixing and wheelbarrowing stucco mix around a jobsite.
Can you rent scaffolding for stucco?
You can rent the needed scaffolding and a powered mixer that will be required for this job. Brick, concrete block walls and even poured concrete walls are excellent surfaces to stucco. It is a common practice to stucco exposed poured-concrete foundations to mask the irregularities created by the wood or metal forms.
Can you have stucco on brick?
DEAR GAYNELL: Good news! You can have stucco applied to your brick home. What I can't answer is whether or not you possess the skills to apply exterior stucco. Not only do you need hand-eye coordination, you will need certain tools and equipment. These challenges are not insurmountable, but they can create issues. You can rent the needed scaffolding and a powered mixer that will be required for this job.
What is stucco exterior?
Stucco is a somewhat colloquial term for portland cement plaster, and some people consider it to refer to an exterior, not interior, finish. Exterior insulation and finish system is sometimes (incorrectly) called “synthetic” stucco.
How is Portland cement plaster applied?
Portland cement plaster is applied either by hand or machine to exterior and interior wall surfaces in two or three coats. It may be applied directly to a solid base such as masonry or concrete walls, or it can be applied to metal lath attached to frame construction, solid masonry, or concrete construction.
Can stucco be heated?
As temperatures drop lower, plaster ingredients can be heated before mixing the stucco. Both water and sand have enough mass to hold heat well, though it is often easiest to heat water. However, either one, or both, materials can be heated to give plaster added protection in cold weather.
When can you apply stucco products?
There is a temperature range for the application of portland cement stucco base coats and finishes:
What else can I do to improve the quality of stucco?
There are three things that make a big difference in the outcome of a stucco project.
What is a conventional stucco system?
Conventional – or three-coat – stucco will have a mechanically fastened weather barrier, or sprayed or rolled-on air and moisture barriers. Over the weather barrier will be expanded or woven wire lath, and then a portland cement scratch and brown coat. The finish can be a variety of products used individually – or in combination – to provide color and texture to the surface.
What are hard coat stucco systems?
These are terms associated with one-coat and three-coat stucco systems They are described as hard coat systems because the base coats used for these wall assemblies are formulated with portland cement as the ‘backbone’ of the assembly.
What is the role of aggregates in a hard coat stucco system?
When the aggregates are graded and proportioned correctly – and combined with portland cement – the matrix cures into a hard and durable wall. Properly graded and proportioned aggregates save you money, because they provide the maximum yield for a stucco base coat.
What about colored stucco or exterior stucco – how is it applied?
Colored stucco or exterior stucco is a cement/lime mix that is highly durable and cost efficient product for adding texture and color over one-coat or conventional stucco systems. The manufacturer’s offerings on colored stucco usually include a selection of aggregates for achieving various textures. The skill of the applicator also comes into play with textures for colored stucco.
What paint can I use for stucco?
All cement plaster , no matter what the system, has a high pH content that can be detrimental to paints. New stucco (within the first year of application) should be primed and painted with the paint manufacturers’ coatings designed for high pH surfaces. It is important to follow the manufacturers’ instructions for 1) the type of coating to apply, 2) the timing between coats, and 3) the finished mil thicknesses when the coatings are dry. The information you need to make sure the right paint is applied correctly will be found on the paint manufacturers’ website.
How long does it take for stucco to harden?
3. After the mortar has hardened slightly, it should be scratched to a depth of 1/8" and allowed to harden for between 36 and 48 hours, periodically misting ...
What is stucco? What is its purpose?
Applying stucco is a great way to enhance the beauty of any home, and the application of this great material is well within the skill set of most homeowners. If stucco seems right for you, consider what type of surface you will be covering. The application methods will vary depending on whether the existing wall is wood, block, brick, concrete, ...
How thick should a scratch coat be?
A flat finishing trowel can be used to apply a finish coat between 1/8" and 1/4" thick to the scratch coat. If a powdered pigment is desired, the pigment should have water added to it and be mixed completely before being added to the stucco.
