How often should you wet new stucco?

Asked By: Sergejus Mcdonnell | Last Updated: 16th March, 2020
Category: hobbies and interests painting
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Plaster can be wetted periodically throughout the day to supply additional curing moisture; usually one or two times per day should suffice. In extreme conditions, sun and wind breaks can be used to provide extra protection from the elements. The first two days are the most critical period.

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Thereof, can new stucco get wet?

Cloudy weather is ideal, since a sunny day can make the stucco dry too quickly. However, it must not be rainy, merely cloudy. While the stucco is drying, it's important to keep it damp by misting the stucco with water. This prevents the stucco from drying too quickly, which could cause cracks.

Also Know, how often should you seal stucco? If new, stucco can be sealed with a clear concrete/ masonry sealer, which will penetrate into the stucco and stop moisture entrance. These are typically silicone type sealers. While effective, these finishes will usually need to be redone every 4-5 years.

Regarding this, how long should you wait between stucco coats?

Many experts be- lieve this is beneficial to the plaster by providing a stronger bond between the two coats and enhanced curing of the scratch coat. In either case, the brown coat must cure a minimum of 7 days prior to the application of the finish coat per the UBC and IBC. The NWCB “recommends” a minimum of 10 days.

Should you wet stucco before painting?

The stucco needs to be adequately cured before any paint is applied. During the curing time it is important the stucco be wetted down to pull the excess lime out. If this process is rushed, the stucco itself will deteriorate rapidly. Painting the stucco right away is not an option.

38 Related Question Answers Found

Can water go through stucco?

Stucco is not waterproof. Rain water is able to penetrate through stucco and cause moisture problems within wall assemblies and within the building, particularly at the base of walls. This water penetration can be reduced by proper maintenance of coatings and sealants.

How do you know if water is behind 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 water seal stucco?

Waterproof Paint
  1. One method that could be used to waterproof stucco is simply applying waterproof paint.
  2. Step 1 - Clean the Stucco.
  3. Step 2 - Paint Stucco.
  4. A great way to add waterproofing to stucco is to waterproof before you apply the stucco.
  5. Step 2 - Roll out Barrier.
  6. Step 3 - Apply Barrier.
  7. Step 4 -Add Stucco.

How long does stucco need to dry before rain?


Moisture-cure the stucco. The scratch coat should measure 3/8 inch thick, and it should moisture-cure for 48 hours before the brown coat is applied. In dry climates or windy weather, keeping the stucco moist during the curing period may require more frequent wetting.

What happens when Stucco gets wet?

In addition, real stucco sounds solid when it is tapped. It's also less sure to be damaged by a blow of some sort to the wall. Also, real stucco holds up well in wet conditions. It absorbs moisture and is porous but it also dries simply and without damage to the structure and won't cost so much in stucco repairs.

Is stucco good or bad?

Durability. Stucco is resistant to fire, rot, mold, impact, and termite infestation. Depending on local climate conditions, the finish on stucco homes can last as long as 100 years.

How long does stucco need to dry?

Cure Time: The scratch coat should be allowed to moist cure for a period of 3-5 days. This allows the cement to become hard enough to gain most of it's strength before the brown coat is applied. Cure Time: The brown coat requires a lot more time to cure (28 days is recommended).

What do you put under 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.

Can you pour concrete against stucco?


Remember that your stucco is certainly not waterproof and can be permeated by moisture. I would advise against pouring a concrete wall right up against the stucco.

Can you use mortar as stucco?

Mortar Mix Type S – A high-strength mortar mix that can be used as a masonry parge or finish coating or as a scratch and brown coat stucco. Water Resistant Stucco - Water Resistant Stucco is a portland/lime cement-based stucco with crystalline water-repellent technology.

What is the difference between stucco base coat and finish coat?

The brown coat covers the first base coat and creates a plane surface, leading to the best possible results for the finish coat. The finish coat is the thinnest of the coats, and its purpose is to impart a decorative surface to the plaster. Scratch, brown, and finish coats all have slightly different proportions.

Can you mix paint with stucco?

Modern stucco generally contains up to 10 percent of either a liquid paint tint or powder cement and mortar dye, custom mixed in one of two manners: either mixed with water before addition to the stucco or combined with the stucco as a dry ingredient.

How much does it cost to re stucco a home?

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.

How do you remove black mold from stucco?


Dissolve the oxygen bleach powder in water and put it in a hand-pump garden sprayer. Saturate the stucco and keep it wet with the solution for up to 30 minutes. Use a stiff scrub brush dipped in the solution to remove the black stains. Adding regular liquid dish soap helps the cleaning.

How long should stucco last?

Today, the material typically consists of more familiar ingredients like cement and sand, but it remains as tough as ever, often lasting as long as 50 or 80 years. However, in order to live out its expected lifespan successfully, stucco tends to require a modest amount of care and attention.

How long do you have to wait after scratch coat?

Applying Scratch Coat
After scoring the surface, it is best to let the surface cure for 10 to 12 hours to make sure it has solidified. After waiting for this amount of time, apply a gentle stream of water to hydrate the scratch coat.