Silicone sealant is a widely used building material. Its advantages are environmental protection, non-toxicity, good weather resistance, high and low temperature resistance, strong bonding, etc. So how to use silicone sealant?
How to use neutral silicone sealant
1. Preparation:
Before using silicone sealant, you must make adequate preparations. First of all, ensure that the construction environment is clean and dry, and there must be no pollutants such as oil, dust, and water stains on the surface of the substrate. This is the basic condition to ensure that the sealant can be fully bonded. In addition, it is recommended to prepare necessary tools before construction, such as glue guns, scrapers, detergents, etc. It should be noted that the construction temperature should generally be between 5 degrees Celsius and 40 degrees Celsius, which can ensure the best performance of the sealant.
2. Opening and loading sealant:
When opening the hose of silicone sealant, first cut the seal to ensure a smooth outflow path, and then install the hose on the glue gun. This is a relatively simple step, but you need to ensure that the inside and outside of the hose are clean to avoid contamination. During the loading process, carefully check whether the pressure rod and the glue outlet of the glue gun are normal to ensure that the sealant can be squeezed out evenly and smoothly.
3. Applying sealant:
When starting to apply the glue, it is recommended to slowly and evenly squeeze out the silicone sealant from one end of the gap that needs to be sealed. During the operation, keep the angle between the glue gun and the construction surface at about 45 degrees, so that the flow direction and amount of the sealant can be better controlled. After squeezing out the sealant, you can use a scraper to level it to ensure that the sealing surface is smooth and dense. Be careful not to apply it repeatedly, which may cause the adhesion of the sealant to decrease.
4. Curing and maintenance:
Silicone sealant cures relatively slowly, and it usually takes 24 to 48 hours to fully cure. During this process, try to avoid applying pressure or secondary treatment to the already constructed parts to avoid affecting the sealing effect. The best practice is to fix the components that need to be sealed without frequent movement. After completion, it is recommended to carry out appropriate maintenance work, such as avoiding the invasion of water vapor during the curing process, so as to ensure that the sealant achieves the best performance.
5. Common problems and solutions:
When using silicone sealant, common problems include unsatisfactory sealing effect, long curing time, and bubbles on the surface. Most of these problems are caused by improper construction or environmental adaptation. For the problem of unsatisfactory sealing effect, the cleanliness and dryness of the substrate surface should be checked to ensure sufficient bonding of the sealant. In addition, the long curing time may be related to the ambient humidity and temperature. At this time, the construction environment can be adjusted appropriately or a more suitable construction time can be selected. If bubbles appear on the surface, it is usually because air is mixed in during the construction process, which can be solved by squeezing and scraping.
6. Safety precautions:
When using silicone sealant, some safety precautions should be taken. Although silicone sealant is relatively environmentally friendly and non-toxic, it is still necessary to pay attention to ventilation during construction to avoid long-term inhalation of volatile gases. In addition, if the skin comes into contact with the sealant, it should be washed immediately with soapy water to avoid long-term contact. If it accidentally enters the eyes, it needs to be rinsed with clean water immediately and seek medical attention. In addition, unused sealants should be properly stored to avoid direct sunlight and high temperature environments to ensure their performance.
