Kerrogras Pu ADHESIVE (PUA 816 )
Multipurpose, two component, Polyurethane thinset adhesive for fixing tiles and stone on interior and exterior floor & wall. Suitable for various drywall substrates including metals.
Packaging:4 Kg Pail
Colour: Part A: Pale Yellow. Part B: White
Certification
- ISO 9001:201514001:2015
- EN 12004:2017, 5TS2&R2T Type-V Adhesive
Features and Benefits
- High strength, chemical resistant
- Economical & Easy to use
- Bonds to various substrates, including metals
- Water, freezing, thermal shock resistant
- Flexible and heat
Physical Properties
EN / ISO Data | ||
Test / Reference | Requirement | Typical Values |
Vertical Slip – EN 1308 | ≤0.5mm | 0.1-0.2mm |
Tensile Adhesion – Open time Not less than 20 Min. – EN 1346 |
≥0.5 Mpa |
1.5- 1.8MPa |
Initial Shear Bond – EN 12003, Clause 7.3 | ≥2.0 Mpa | 2.3- 2.5 Mpa |
Tensile Adhesion- Water Immersion – EN 12003, Clause 7.4 |
≥2.0 Mpa |
2.2- 2.3 Mpa |
Shear Adhesion after thermal shock – EN 12003, Clause 7.5 |
≥2.0 Mpa |
2.1- 2.2 Mpa |
Installation
Surface Preparation:
All surfaces should be between 40° F(4° C) and 95° F(35° C) and structurally sound, clean, and free of dirt, oil, grease, loose peeling paint, laitance, concrete sealers, or curing compounds.
Substrates must be compact and consistent, free from rising dampness, and with no loose, flaky, or imperfectly anchored parts. They must also be stable and without cracks and have already completed the curing period of hygrometric shrinkage. Uneven areas must be corrected with suitable smoothing and finishing products.
Installation shall be made on a dry surface. New concrete slabs must be damp cured and at least 28 days old before application. All slabs must be upright and faithful to within 1/4” (6mm) in 10ft (3m). Expansion joints shall be provided through the tile work from all construction or expansion joints in the substrate.
Follow ANSI Specification AN-3.8 “Requirements for Expansion Joints” or TCA Detail EJ171-91 “Expansion Joints”. Do not cover expansion joints with mortar. Glass Mesh Mortar Unit: follow TCA installation detail W244.
Mixing:kerrogras PUA 816 is prepared by mixing parts A and B from the bottom upwards using a low-rev (≈ 400/min.) helicoidal agitator with a preset ratio 1:25 of the packs. Pour part B into the bucket containing part A, being careful to mix the two parts uniformly until a smooth, even-coloured mixture is obtained. The user must mix a quantity of adhesive that can be consumed within 1 hour at +25 °C / 50% R.H.
Packs of kerrogras PUA 816 adhesive must be stored at a temperature of ≈ +25 °C for at least 2/3 days prior to use.
APPLICATION
a) Tile/Stone: Apply adhesive to the substrate with the flat side of the trowel, pressing firmly to work into the surface. Comb on additional adhesive with the notched side. Use the proper-sized notched trowel to ensure full bedding of the tile. Spread as much adhesive as can be covered with tile in 10 minutes. Back butter large format tiles (> 12”x12”) to provide full bedding and firm support. Place tiles into a wet, sticky adhesive, use a beating block and rubber mallet to embed the tile and adjust the level. Check adhesive for complete coverage by periodically removing a tile and inspecting bedding adhesive transfer onto the back of the tile. If the adhesive is skinned over (not sticky), remove it and replace it with fresh adhesive.
b) Glass Mosaic tiles: The SUPER TAJ SHREE PUA 816 adhesive shall be applied to the surface to be tiled with a notched trowel using a scraping motion to work the adhesive into good contact with the surface to be covered. A notch trowel with notches of approximately 4mm is recommended to get a bed thickness of 1.5-2mm. A v-notch of 3mm can also be used to get a bed thickness of 1.5mm. Apply only so much that can be covered with tile within 10-15 minutes or while the adhesive surface is still tacky. Tiles shall then be placed with a mallet or grouting float to e and beaten gentnsure 100% full bedding. It’s essential to align the tiles to achieve uniform joints, enhancing the overall appearance of the installation. Then, allow the tiles in The Glass Mosai to set until firm. Excess adhesive must be cleaned from the surface of the tile with a wet cloth or sponge while the adhesive is fresh and has not hardened.
After the tiles are set firm, the face of the sheets of front mounted glass mosaic tiles shall then be dampened and the face mount paper must be removed. This step completes the installation process.
Installation of Tile / Stone on Drywall boards: When installing tile or stone using SUPER TAJ SHREE PUA 816 on drywall boards like cement backer board, wood board, plywood board, calcium silicate board, or gypsum wallboard, it is advised to provide spacers and fill the resulting grout joints with flexible materials like SUPER TAJ SHREE Stellar Grout/silicone sealant / acrylic sealant.