the differences between weatherproof silicone sealant and structual silicone sealant

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  • Date:2021/08/09

Silicone structure sealant and silicone weatherproof sealant are both belong to silicone sealant, however, they have some differences in use, character, price, and performance. Also, they use it differently.Because of that, we need to classify the products we use and use them properly. the sealant will be wasted or dangerous affairs happen If we use it wrongly.



The differences between silicone structure sealant and silicone weatherproof sealant

1, silicone weatherproof sealant is mainly used for sealing joints between materials, and silicone structural sealant is mainly used for bonding, both are not in the same place. structural silicone sealant is mainly used for non-structural.On the other hand, structural assembly bonding of different curtain walls, and weatherproof silicone sealant is mainly used for waterproof sealing of joints.

Because of that, we need to distinguish where to use it before using it.

2, silicone structural adhesive in addition to the characteristics of weatherproof sealant, but also has stronger bonding performance than weatherproof sealant, mainly in the tear strength, elongation at break, tensile strength is relatively strong, tensile strength is mainly used in pre-stress place.

3, the price of structural adhesive is higher than that of weather-resistant adhesive of the same grade, but the elasticity of weather-resistant adhesive is higher than that of structural adhesive.


the usage of silicone structural sealant, silicone weatherproof sealant:

Weather-resistant sealant

1, suitable for all kinds of curtain wall weather sealing, especially recommended for glass curtain wall, aluminum plate curtain wall, stone dry hanging weather sealing;

2, glass, metal, ceramic tile, glass, aluminum joint sealing;

3, Weather resistant sealant is suitable for masonry, concrete, rock, cement, marble, stainless steel, wood, anodized aluminum, and painted aluminum surface joint sealing. Primer is not needed in most cases.


Silicone structural adhesive

1.structural silicone sealant mainly used for structural or non-structural bonding assembly between metal and glass.

2. It can connect the glass directly with the surface of metal components to form a single assembly component, meeting


In conclusion: Structural silicone sealant and weatherproof silicone sealant have their own advantages and disadvantages. The weather resistance of weatherproof silicone sealant is slightly better than that of Structural silicone sealant. Structural adhesives are safer. Weatherproof silicone sealants are mainly weatherproof. If the glass ages quickly, the consequences of the glass falling are very serious. Therefore, the current structural silicone sealant is basically silica gel or silicone adhesives, which basically do not age in the natural environment. Weather-resistant glue does not involve safety, and the result of failure is generally water leakage and air leakage. Therefore, there are more types of weatherproof silicone sealant, including polyurethane, acrylic, etc., but silicone has the best performance in weatherproof ability.


CHNGOO silicone sealant (A professional silicone sealant supplier) has OS-796, SJ-168,  (weatherproof silicone sealant) which are in best quality with competitive price. Each of them has their own character. OS-796 is mainly used for windows, SJ 168 is mainly used for wall curtain.  AlsoSJ-268 is a type of structural silicone sealant which has excellent performance in bonding. 




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