Concrete and Mortar 
Exterior Waterproofing 
Professional Sealants 
Roof Waterproofing 
Substructure Waterproofing 
Tiling and Grouting 
Water Tanks and Other Areas 
Wet Areas 
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| PROPERTIES | STANDARD | RESULTS |
|---|---|---|
| Physical State | Viscous paste | |
| Appearance | Opaque | |
| Colour | White, black, grey | |
| Density (gm/cc) | 1.35-1.50 | |
| Tensile Strength (mPa) | ASTM D 412: 2016 | Approx. 2 |
| Elongation (%) | ASTM D 412: 2016 | > 500 |
| Shore A | ASTM D 2240: 2015 | 34 |
| MAF | ASTM C 719: 2014 | ±50 % |
| Depth Cure | Approx.1-2mm/ day | |
| Effects of Heat Ageing | ASTM C 1246:2017 | No cracking and chalking |
| Stain and Colour Change | ASTM C 510:2016 | No staining and no colour change |
| Tack Free | ASTM C 679:2015 | No transfer of test specimen to the polythene film @ 72 hrs |
| Adhesion-In-Peel Strength (N) | ASTM C 794:2018 | 74.2 N (cohesive failure within the sealant and no adhesive bond loss b/w adhesive and substrate) |
- For gap filling
- Sealing control and expansion joint
- Bonding of metals, glass, ceramics
FAQ
What is Trubuild Sealmaster Flexi?
Trubuild Sealmaster Flexi is a high-performance, single-component, moisture-curing MS polymer sealant designed for sealing and bonding applications in construction and industrial projects. It offers excellent adhesion, flexibility, and durability.
What are the key features of Trubuild Sealmaster Flexi?
Trubuild Sealmaster Flexi is a versatile, eco-friendly MS polymer sealant with good gap-filling properties. It is paintable, non-staining, low VOC, and free of isocyanates and solvents. It provides excellent resistance to UV, weathering, and aging.
What surfaces can Trubuild Sealmaster Flexi adhere to?
Trubuild Sealmaster Flexi exhibits excellent adhesion to a wide range of substrates, including concrete, masonry, brick, stone, ceramic, metal, glass, wood, PVC, polycarbonate, and many plastics, without the need for a primer in most cases.
What type of joint movement can Trubuild Sealmaster Flexi accommodate?
Trubuild Sealmaster Flexi can accommodate up to 25% joint movement in both extension and compression. This makes it suitable for sealing dynamic joints subjected to moderate thermal or structural movements.
Is Trubuild Sealmaster Flexi suitable for exterior applications?
Yes, Trubuild Sealmaster Flexi is designed for both interior and exterior sealing and bonding applications. Its excellent weathering resistance and UV stability make it ideal for sealing joints in building facades, windows, doors, and other exterior elements exposed to sunlight and rain.
How is Trubuild Sealmaster Flexi applied?
Trubuild Sealmaster Flexi is supplied in cartridges and can be easily applied using a standard caulking gun. The joint should be properly designed, clean, dry, and free from grease or dust. Use backing rod or bond breaker tape to control the sealant depth and prevent three-sided adhesion.
What is the skin time and cure time of Trubuild Sealmaster Flexi?
Trubuild Sealmaster Flexi has a skin time of approximately 30 minutes and cures at a rate of 3-4 mm per 24 hours under standard conditions (23°C, 50% RH). The actual cure time will depend on the joint dimensions, temperature, humidity, and substrate type.
Can Trubuild Sealmaster Flexi be painted over?
Yes, Trubuild Sealmaster Flexi is paintable with most water-based and synthetic paints. However, it is recommended to conduct a compatibility test before painting and allow the sealant to fully cure. Some highly filled or rigid paint systems may crack over the flexible sealant.
What is the shelf life of Trubuild Sealmaster Flexi?
When stored in its original, unopened packaging in a cool, dry place at temperatures between 5°C and 25°C, Trubuild Sealmaster Flexi has a shelf life of 12 months from the date of manufacture.
What are some common applications of Trubuild Sealmaster Flexi?
Trubuild Sealmaster Flexi is versatile and can be used for sealing joints in precast concrete panels, masonry walls, metal cladding, window and door perimeters, HVAC ducting, and roofing details. It is also suitable for bonding and bedding applications in building and construction.