Usually, there are three coat layers in a stucco. They are the scratch coat, thick brown coat, and the finish coat. You can color the final layer of the stucco. After mixing and applying the stucco, adequate time should be given for it to dry. The firmness of the outside appearance of the stucco does not establish that it is dry. Water is absorbed in different layers of stucco.
The drying of the stucco is a long and slow process. It usually takes 90 days for the layers of stucco to dry. Though, it can vary depending upon the portions of the mixing. Besides, weather condition also plays a vital role sometimes.
Can Stucco Absorb Water?
Stucco is not “waterproof,” but it can absorb water for a certain period as it is such a porous material. The absorbent of the stucco can hold water. It keeps the wall safe in wet conditions. Therefore, it prevents any future repair. The materials used, which are human-made, are more prone to have moisture issues. Options of exterior insulation can prevent most of the problems.
If stucco is wet for a short period, that is okay; it can handle that. But if the stucco is soaked for a long time, the water may flow through the stucco and damage any wooden frames or objects. Therefore it is noticeable that after raining or storm, stucco will take hours and, in many cases, days to be dehydrated.
Protective materials can be used to keep the stucco safe. A long time ago, people only used paint to safeguard, but there are many alternatives available. So, it is not a bad idea to paint stucco.
Water damage is the leading cause of stucco to deteriorate. It can cause leakage and peelings. The areas that come into contact with water regularly will become soft. Users should be careful and vigilant in resolving these issues.
How to mix substances to get the best outcome?
The best outcome of stucco and to make it dry quickly should be mixed in the correct proportions. Different layers of a stucco need different mixes of substances.
Mainly Portland cement is used, forming the scratch coat. Hydrated lime is used to ¼ part and 2-4 parts sand. The mixture needs to be slurry. Adequate water should be mixed to make it slurry. For getting a strong bond with the subsequent coat, the layer should be appropriately grooved before drying. The thickness should be around 3/8 of an inch.
The brown coat consists of materials of the same kind. The proportion of sand is a bit higher here. About 3-5 parts of sand are used in making this coat. Troweling is a process here to make the surface even.
To create the finishing coat, the proportions of the substances used are the same. For adding colors in this coat, mineral oxide pigments are added. In each bag of cement, 10 pounds of dye can be used. It is about 1/16 of an inch thick.
Does exterior stucco need to be wet before painting?
The stucco exterior can have a very high PH level, which is considered harmful before painting the exterior. So simply water can be applied to cure the high PH level. Water can be used daily of 3 or 4 times. By this method, it can quickly come down. But before painting, if the pH rate is consistent, then the stucco should be absolutely dry before you can paint.
In controlling the high pH rate, there is an alternate solution that is using a specialty primer. Omega stucco’s primer can be used; this will create consistency is suction. It also removes the thirst of the exterior. There are special primers to apply to stucco surfaces. It also works as a bridge between what you are about to paint.
For having a more successful project, the process before painting should be followed correctly.
How to get the best results in using exterior stucco?
To maintain the quality of stucco is a difficult task. It starts with the mixing of the stucco. All the ingredients have to be proportionate. The sand to cement ratio has to be exact. During various seasons it may require special maintenance. If you use too much cement, the plaster would be prone to shrinkage. On the other hand, using less glue than necessary can make the application fragile.
During wet weather, moisture can cause damage to the exterior stucco. Therefore a better drainage plane is required. To keep the moisture from getting through the weather-resistive barrier can be used. If a fence is used behind the lath, it can stop the water from migrating down the wall, which keeps the stucco stable.
For getting a long-lasting paint, power washing of stucco is recommended. While doing this, you can discover cracks and stains along. After washing, proper drying is a must to keep the moisture out of the surface.
If you are a person who likes to keep their things in good condition, then any minor imperfection can become an eyesore. Through regular maintenance, you can prevent minor cracks from becoming any more extensive problem. Pest infestations are to be dealt with quickly. The material is not flexible; it can also develop gauges and chips. These problems can be solved by proper guidance, or there are professionals who do such stuff on a daily basis.
Conclusion Therefore, the drying of stucco is a sensitive period. All the pre-stages of applying stucco are highly relevant to the drying time of stucco. The proportions and ingredients are to be appropriately maintained. The watering of the stucco before painting or using any repellent also has to be maintained. Water absorbed in the porous of stucco will evaporate, given the proper time. Proper use of flash and weep screeds are also recommended. Overlooking these initials can result in fatal damage to exterior stucco. People should also keep an open mind in learning and taking proper advice before applying.