GRESBOND | PUA-100
GRESBOND | PUA-100
Highly Flexible, Two-Component Polyurethane Adhesive for Diverse Surfaces Like Metal, Plywood & Drywalls
product Description
GRESBOND PUA-100 is a high-performance, two-component polyurethane thinset adhesive designed for superior bonding of tiles and stone on both interior and exterior floors and walls. Engineered for exceptional flexibility, it is ideal for a wide range of substrates, including metal, plywood, and drywall. This multipurpose adhesive ensures strong and durable adhesion, making it the perfect solution for challenging installations.
Standard Compliance/specification
Complies to Type 5 'T S2' as per IS 15477: 2019 - Adhesives for use with ceramic, mosaic and stone tiles - Specification.
Classified as R2T per EN 12004/ISO 13007: reaction resin adhesive (R), improved (2), slip-resistant (T).
Area of Use
Features and Advantages
Application Substrates
Limitations
Technical Information | Application Properties
Installation
Installation
Instructions
Surface Preparation
The substrate must be levelled, cured, undamaged, compact, rigid, resistant, dry and free from any debonding agents and from damp rising.
All surfaces must be plumb and true to within 6 mm in 10 ft (3m).
Dry, dusty surfaces should be dampened with water & excess water should be swept off.
New concrete slabs shall be damp cured and 28 days old before application which will reduce the shrinkage from tile fixing surface.
Rust on iron surfaces must be removed by sandblasting.
Expansion joints are to be provided & filled with suitable sealant.
Don't cover expansion joints with thin set tile adhesive/tile.
Mixing
The two components of GRESBOND PUA-100 are supplied in ready-to-mix bucket.
Pour the part B into part A and mix well until a uniform white paste is obtained.
Mix with a suitable mechanical stirrer or slow-speed drills (50-100 rpm) until a lump-free homogeneous paste is obtained.
Always mix the required quantity, which can be consumed within pot life.
Leave the mixture for 5 minutes before use.
The ratio of the part A and part B is fixed, and any modification and/or inappropriate ratio could cause incorrect hardening of the product.
Application
Apply adhesive to the substrate with the flat side of the trowel.
Comb on additional adhesive with the notched side.
Use the proper sized notched trowel to ensure full bedding of the tile.
Tiles must be fixed within 60 minutes of adhesive being applied, depending on atmospheric conditions.
Check the adhesive ribs periodically and if a skin has formed, remove the dried adhesive and apply fresh adhesive.
Press the tiles firmly into position with a slight twisting action, checking periodically that good contact is maintained with the back of each tile and beat in using a rubber mallet to embed tile and adjust level.
Leave no voids behind tiles.
For large size tiles or irregular surfaces, adhesive can additionally be buttered on the backs of the tiles to ensure full adhesive contact.
Use suitable support along with adhesive for fixing tiles on vertical surfaces.
Leave adequate joints between individual wall and floor tiles using GRESBOND spacers.
The joint width shall be as per the recommendation of the architect/engineer. Provide joints (spaces) on the periphery of the area without allowing the tile/stone to be bound by the peripheral area.
Fill the resulting grout joints with flexible materials like GRESBOND epoxy range/suitable silicon or acrylic sealants.
Clean off surplus adhesive from the tile face and between joints.
Clean tools and tile work with water or suitable solvent while adhesive is fresh. Once cured, the adhesive can only be removed by mechanical means.
Precautions & Notes
Avoid damp surfaces
Do not modify ratios
Protect from rain and traffic for 12 hours
For heights >3m, use mechanical fasteners for extra safety
Leave gap around tiles and fill with appropriate grout
Properties
Working Properties
Performance Properties(as per ISO 13007 & EN 12004 – R2T)
| Test | Requirement | Result |
|---|---|---|
| Initial shear adhesion strength | ≥2.0 N/mm² | ≥5.0 N/mm² |
| Shear adhesion strength after water immersion | ≥2.0 N/mm² | ≥5.0 N/mm² |
| Shear adhesion strength after thermal shock | ≥2.0 N/mm² | ≥5.0 N/mm² |
| Tensile adhesion - Open time (at 60 minutes) | ≥1.0 N/mm² | ≥1.5 N/mm² |
| Slip resistance (T) | ≤0.5 mm | ≤0.3 mm |
Performance Properties (as per IS 15477:2019 – Type 5 'T S2')
| Test | Requirement | Result |
|---|---|---|
| Tensile (dry, 28 days) | ≥2.0 N/mm² | ≥2.5 N/mm² |
| Tensile (wet) | – | ≥1.5 N/mm² |
| Shear (dry) | ≥6.0 N/mm² | ≥7.0 N/mm² |
| Shear (wet) | – | ≥6.0 N/mm² |
| Shear (heat aging) | ≥3.0 N/mm² | ≥6.0 N/mm² |
| Deformability (S2) | ≥5mm | ≥30mm |
Note:
Test results are indicative as per testing method specified in standard. Test results may vary as per substrate, site condition & testing machine etc. Actual field performance will depend on installation methods and site conditions.
Precautions & Notes
- Do not use on damp surfaces or where there is a risk of rising damp.
- The packs are pre-measured, therefore mixing errors are impossible. For partial mixing, weigh the two parts precisely.
- Any modification and/or inappropriate ratio could cause incorrect hardening of the product.
- Protect against direct rain/foot traffic for at least 12 hours.
- Tiles/stones should not be installed directly on expansion joints.
- Leave a gap between the tile & fill gaps with GRESBOND tile grout.
- The designer/applicator must evaluate the use of an additional mechanical fastening system for extra security for more than 3 m height (such as steel hooks fastened to the substrate).
Coverage
- 16–20 sq. ft/4 kg pack – 1.5 mm bed thickness (3 mm x 3 mm notch)
- 8–10 sq. ft/4 kg pack – 3 mm bed thickness (6 mm x 6 mm notch)
Coverage will vary depending on trowel notch size, type, size of tile and substrate smoothness and evenness.
Packaging
4 kg bucket
Shelf Life
24 months (sealed pack, stored dry, shaded, temperature-protected)
Grouting
After 24 hours of tiling using GRESBOND cementitious or epoxy grouts.
Safety Precautions
- Keep away from children
- Use gloves, eye and face protection
- Wash immediately with water upon contact
- For eyes: rinse and seek medical advice
- Professional use only
- Refer MSDS for full safety info
Disclaimer: While the company guarantees its products against defective materials, the use and application of these products are made without guarantee since the conditions of their application are beyond its control. It is recommended to verify with the company that the product is suitable for the intended use, and that this Data Sheet version is the latest one. The company may modify it without prior notice. Technical characteristics are listed for guidance only. For more information, please contact the company office in your location.
