Joint sealants play a crucial role in construction and maintenance, offering protection against water ingress, dust, and other environmental factors. In Bangladesh, where monsoon rains and humidity can wreak havoc on structures, selecting the right joint sealant is essential for ensuring durability and longevity. This article explores the best joint sealants available in Bangladesh, their prices, and key factors to consider when making a choice.
Contents
Understanding Joint Sealants
Joint sealants are materials used to seal joints or seams in various structures, including buildings, pavements, and bridges. They prevent the entry of water and air, accommodate movement, and enhance the aesthetic appeal of a project. Common types of joint sealants include:
- Silicone Sealants: Known for their flexibility and durability, silicone sealants are widely used in areas exposed to moisture.
- Polyurethane Sealants: These offer excellent adhesion and are ideal for heavy-duty applications.
- Acrylic Sealants: Suitable for interior applications, acrylic sealants are easy to paint over and are generally more affordable.
- Butyl Sealants: These are primarily used for roofing and other outdoor applications due to their excellent weather resistance.
Factors to Consider When Choosing a Joint Sealant
- Type of Application: Identify the specific use—whether for indoor or outdoor purposes, construction joints, or expansion joints.
- Movement Capability: Consider the extent of movement the joint will experience. Some sealants can accommodate more movement than others.
- Adhesion Properties: Ensure the sealant adheres well to the materials being joined, such as concrete, metal, or wood.
- Curing Time: Different sealants have varying curing times, which can affect project timelines.
- Weather Resistance: In Bangladesh, sealants must withstand humidity and rain, so choose products specifically designed for these conditions.
- Application Method: Some sealants come in cartridges and require a caulking gun, while others may be brush-applied.
- Cost: Price can vary widely depending on the type and brand of sealant.
Popular Joint Sealants in Bangladesh
Here’s a look at some of the best joint sealants available in Bangladesh, along with their approximate prices.
1. Sika Sikaflex
Type: Polyurethane Sealant
Features: Excellent adhesion, weather-resistant, and high movement capability.
Price: Approximately BDT 350-450 per 300ml cartridge.
Sika Sikaflex is renowned for its durability and flexibility, making it suitable for both interior and exterior applications. It can be used on various substrates, including concrete and metals.
2. Fosroc Polyurethanes
Type: Polyurethane Sealant
Features: High-performance, resistant to water and chemicals.
Price: Around BDT 500-600 per 600ml cartridge.
Fosroc products are widely used in construction for their robust performance. The polyurethane sealant is particularly useful for sealing joints in pavements and structures that experience significant movement.
3. DOW Corning 791
Type: Silicone Sealant
Features: Excellent weathering properties and UV resistance.
Price: Approximately BDT 600-700 per 300ml cartridge.
DOW Corning 791 is a premium silicone sealant ideal for glazing applications. Its high elasticity allows it to accommodate movement without cracking.
4. Asian Paints Sealant
Type: Acrylic Sealant
Features: Water-resistant, easy to paint over.
Price: Around BDT 200-300 per 400ml tube.
Asian Paints offers a range of affordable sealants suitable for interior applications. While not as durable as polyurethane or silicone, it is ideal for sealing gaps in indoor spaces.
5. Bostik Sealants
Type: Various (Silicone and Polyurethane)
Features: High adhesion, suitable for multiple surfaces.
Price: Ranges from BDT 400 to 800 depending on the type.
Bostik provides a variety of sealants tailored for specific applications, making it a versatile choice for builders and DIY enthusiasts.
6. Everbuild 125
Type: Hybrid Sealant
Features: Combines the best properties of silicone and polyurethane.
Price: Approximately BDT 500-700 per 300ml cartridge.
Everbuild 125 is gaining popularity for its easy application and excellent performance in both indoor and outdoor settings.
Price Comparison of Joint Sealants
Here’s a summary table of the prices for various joint sealants available in Bangladesh:
| Sealant Brand | Type | Price (BDT) |
|---|---|---|
| Sika Sikaflex | Polyurethane | 350-450 (300ml) |
| Fosroc Polyurethanes | Polyurethane | 500-600 (600ml) |
| DOW Corning 791 | Silicone | 600-700 (300ml) |
| Asian Paints | Acrylic | 200-300 (400ml) |
| Bostik Sealants | Various | 400-800 (varies) |
| Everbuild 125 | Hybrid | 500-700 (300ml) |
Where to Buy Joint Sealants in Bangladesh
Joint sealants can be purchased at various locations throughout Bangladesh, including:
- Local Hardware Stores: Most towns and cities have hardware stores that stock popular brands.
- Construction Supply Stores: Larger cities often have dedicated suppliers for construction materials, including sealants.
- Online Retailers: Websites like Daraz, Chaldal, and others offer a range of sealants with home delivery options.
- Manufacturer Outlets: Some brands have direct outlets where you can purchase products at competitive prices.
Conclusion
Choosing the best joint sealant for your project in Bangladesh requires considering factors such as application type, movement capabilities, and weather resistance. With a variety of options available at different price points, it’s crucial to assess your specific needs before making a purchase.
Brands like Sika, Fosroc, and DOW Corning stand out for their performance and reliability, while options from Asian Paints offer affordability for indoor projects. Always ensure you are buying from reputable suppliers to guarantee the quality of the sealant.