Learning about Different Types of Sealants
Speaking of construction projects, sealants are important components that fail to garner the attention they deserve. A high-grade sealant plays an important role in improving the quality life of a building or structure. It acts as a barrier that prevents fluids and other substances from passing through surfaces, joints, or openings, causing damage in the long run. It also prevents the passage of air, sound, dust and in some cases even mitigates fire from spreading.
Sealants have a wide range of properties with respect to strength, flexibility, appearance, permanence, solubility, corrosion resistance etc that make them suitable for different applications. You can achieve desired results by matching the most suitable sealant to your substrate materials.
Here is a list of sealants used in building and construction projects that will give you a better understanding of different types of sealants:
Polysulfide sealants: Polysulphide sealants are highly adaptable sealants that demonstrate good resistance to saltwater, ozone and sunlight. Widely used in the construction process, they are mainly used to seal off the various types of channels and different kinds of joints. It provides a seal that is completely waterproof and minimizes the water leakage risks and any kind of damage and erosion to the substrate.
Silicon based sealants: Silicon-based sealants have good thermal resistance, desirable dynamic movement capability and good adhesion. However, for certain substrates like stones, staining can be an issue, and in some other cases, the use of primers could be a necessity. An expensive option, silicon-based sealants have very good durability performance.
Acrylic sealants: Similar to silicone sealants, acrylic sealants are single-component elastomeric acrylic sealants. Their movement accommodation does not match that of silicon sealants and polysulphide sealants. Showing low shrinkage properties but excellent adhesion properties to all kinds of building materials, these usually give a fine finish and appearance to the surface due to their acrylic property. An added advantage of these sealants is that they accept any paint material readily.
Polyurethane sealants: Available in single and multi-component formulations, polyurethane sealants are best when used in horizontal joints or non-sagging, vertical applications. In particular, these are ideal for roofing, foundation, expansion and control joints etc. These have excellent tear and abrasion resistance, reasonable chemical and weather resistance and are practical options for a broad range of joint sizes. Even polyurethane paints are good-to-go options for protecting substrates from various types of harmful impacts such as corrosion, weathering, abrasion and other deteriorating processes.
Butyl sealants: These are elastomer-based plastic sealants that adhere well to a broad variety of substrates including metal, concrete, glass, wood, ceramics etc. Butyl sealants unlike other sealants do not cure (the properties do not change over time). They show low abrasion resistance and are usually not suitable for demanding building applications.
Polyisobutylenes sealants: These sealants have properties similar to natural rubber but with better durability, improved resistance to chemicals and minimal permeability. Commonly used for insulating glazing units (IGU), they are good at resisting the transmission of vapor and gases. They are generally factory-applied, rather than site applied.
If you want to know which sealant is the best, the answer lies in your area of application. Ideally, speaking, no singular sealant type can be classified as the superior most. This is because some are simply better at certain applications than others owing to their physical and chemical properties. But, yes, one thing that can make a difference in all cases and hence should not be ignored is the good brand.
Next time, while finalizing your sealants for your respective project make sure you opt for the right brand like Dr.CIPY. It’s a reliable brand offering top quality sealants that work well for several types of construction projects. If you are among the ones who do not like to compromise with the quality then Dr.CIPY’s range is just the right choice for you.
