Davco TTB 98 Plus
Davco TTB 98 Plus is an economical thin bed cementitious tile adhesive with extended open time ideal for fixing ceramic tiles, natural stones and most monocottura tiles at interior and exterior walls and floors.
- Easy to use with good workability and consistency
- Good adhesion to most common substrates (concrete, cementitious mortar, stone, bricks, etc.)
- Can be used with Davco Davelastic 98 latex additive to increase performance of the adhesive
- Can be used to lay tiles in wet areas such as shower floor and swimming pool after mixing with Davco Davelastic 98 latex additive
Usage
- Installation of tiles and natural stones onto concrete render, blockwork and rendered brickwork surface
- For walls and floors in both interior and exterior applications
Advantages
- Easy to use with good workability and consistency
- Good adhesion to most common substrates (concrete, cementitious mortar, stone, bricks, etc.)
- Can be used with Davco Davelastic 98 latex additive to increase performance of the adhesive
- Can be used to lay tiles in wet areas such as shower floor and swimming pool after mixing with Davco Davelastic 98 latex additive
Packaging
25 kg bag
Colour
Grey powder
Product Details
APPROVALS / CERTIFICATES
Davco TTB 98 Plus is classified as C1E conforming with EN 12004, without testing for tensile adhesion properties in freeze-thaw condition.
Shelf life
6 months from date of production
Storage conditions
Store properly in dry conditions, in undamaged and unopened, original sealed packaging.
Tensile adhesion strength
| Standard condition | ≥ 0.5 N/mm² |
| Water immersion | ≥ 0.5 N/mm² |
| Heat ageing | ≥ 0.5 N/mm² |
Application
Mixing ratio
6.0–6.5 L of water per 25 kg bag
Fresh mortar density
~1.80 kg/l (at +25 °C)
Open Time
~30 minutes at 25 °C
Adjustability time
~30 minutes at 25 °C
Curing time
~24 hours at 25 °C
Consumption
This depends on the level, profile and surface roughness of the substrate, the size of the tiles and the technique of placing (simple placing or "back"-buttering).
As a guide, in kilogram of powder per m² on flat surfaces:
| Tiles size | Coverage | Trowel size |
| Mosaics and small tiles | ~2.0–3.0 kg/m² | 3 mm x 3 mm notched trowel |
| Normal size tiles (20 cm x 20 cm) | ~5.0–5.5 kg/m² | 6 mm x 6 mm notched trowel |
| Large size tiles up to 3 600 cm² (internal floors) and 2 100 cm² (external floors) | ~10.0–11.0 kg/m² | 12 mm x 12 mm notched trowel |
The consumption above may only serve as a guide. It is highly recommended to carry-out trials on site to determine the actual coverage.
MIXING
Pour clean water into a mixing container. Then, slowly add Davco TTB 98 Plus whille mixing. Mix continuously in a circular motion using a low-speed mechanical mixer until a lump-free, creamy consistency and uniform paste is achieved.
Allow the mix to stand for 5 minutes and re-mix prior to use.
APPLICATION
Davco TTB 98 Plus is spread onto the substrate using a proper and suitable notched trowel. The choice of trowel should be governed by the size of the tiles, depth of knobs, grooves or ridges on the back of the tiles and the evenness of the substrate.
Use the flat side of the notched trowel to spread the mix onto the receiving surface at approximately 1 m² at a time. Then, use the notched side of the trowel to apply the required amount of the mix in one direction.
Press the tile in a perpendicular motion and tapped into position to ensure positive contact with the adhesive and adjust within 30 minutes.
For tile with grooves or ridges, it is necessary to skim a layer of adhesive / butter coat the back of the tiles. This is to ensure good adhesion and adequate coverage between the adhesive and tile.
Ensure that the adhesive is wet when the tiles are laid. Do not allow the adhesive to skin-over prior to tilling. Should skinning occur, break the skin by re-trowelling the adhesive in the opposite direction.
Do not spread more than 1 m² at any one time. Fix the tiles within 15 minutes of applying the adhesive and check the contact by occasionally lifting tiles. Ensure there are no voids under the tiles and the edges between the tiles are even (lippage) with consistent tile joint width.
For external areas, protect from direct sunlight and rain by means of a shelter. It is the user’s responsibility to determine the condition and suitability of all surfaces prior to application.
Grouting
Tile joint grouting should preferably be carried out at least 24 hours after completion of tiling or until the adhesive has set and dry sufficiently.
Setting may be delayed on dense or impervious surface.
CLEANING OF EQUIPMENT
Clean all tools and application equipments with clean water immediately after use. Hardened or cured material can only be removed mechanically.