Terraco sells two cement-acrylic waterproofing systems in the UAE: Terracrete and Weathercoat GP. Both mix a liquid resin with a cement powder on site, and both bridge cracks. Short answer: use Terracrete for water tanks, pools and wet rooms that will be tiled, where its pressure-tested slurry and fixed kit suit the job. Use Weathercoat GP for roofs, facades and other exposed areas, or where you want to adjust the mix as a coating, slurry or screed. This guide compares them using Terraco’s UAE technical data sheets.
Terracrete vs Weathercoat GP side by side
| Terracrete | Weathercoat GP | |
|---|---|---|
| Type | Two-component flexible cementitious slurry | Two-component cement-acrylic elastomeric coating |
| Mix | Fixed 1 resin : 3 powder; never add water | 1:2 coating, 1:3 slurry or 1:4 screed (resin : powder) |
| Kit | 20.25 kg: 5 kg resin, 15 kg powder, 0.25 kg Terrabond A primer | 20 kg: 5 kg resin, 15 kg powder |
| Thickness | 1.5 mm under tiles, 2.0 mm exposed, in 2 to 3 coats | Set by the project specification |
| Consumption | 2.8 to 3.8 kg/m² for the full system | 1.5 to 2.0 kg/m² per 1 mm layer |
| Pot life | 2 hours at 30°C | Use within 1 hour |
| Recoat | Minimum 6 hours at 30°C | Minimum 6 hours |
| Application | Brush or broom (consult Terraco before spraying) | Brush, roller or spray |
| Tiling / use | Tile after 3 days; flood test after 7 days | Walkable uncovered after drying; cement mortars can go over it |
| Data sheet | Version 03.2018 | Dated 2014 |
When to use Terracrete
Terracrete is Terraco’s flexible waterproof slurry for permanent waterproofing. Its data sheet lists non-potable water tanks and reservoirs, swimming pools, wet room walls and floors, retaining walls, foundations, planters and ponds. It is the one with published water-pressure results:
- Nil water penetration at 5 bar for 72 hours (DIN 1048-5 / EN 12390-8)
- Nil penetration at 1.5 bar and crack bridging above 0.75 mm (EN 14891)
- Adhesion above 0.75 N/mm² (ASTM D 4541) and elongation up to 5%
Cement mortars and tile adhesives bond directly to it, so it fits under tiles in bathrooms and pools. For pool tiling, see our comparison of Terrafix W22 and W11; W11’s data sheet lists concrete swimming pools.
When to use Weathercoat GP
Weathercoat GP is the more general system. Terraco lists roofs, facades, wet rooms, foundations, retaining walls, planters, swimming pools and water tanks, and describes it as UV and alkali resistant, weather and abrasion resistant, and vapour permeable. It can be sprayed, and the surface can be walked on uncovered once dry. That makes it the natural pick for roofs and terraces. The adjustable mix is explained in our Weathercoat GP guide.
Drinking water tanks
Terracrete’s data sheet specifies non-potable water tanks. Weathercoat GP’s data sheet lists water tanks but gives no potable-water approval. For tanks holding drinking water, use a product with the approval your consultant or authority requires.
How much you need
Example: 30 m² of bathroom floor and walls, waterproofed to 1.5 mm before tiling.
| System | Coverage used | Material for 30 m² | 20 kg kits |
|---|---|---|---|
| Terracrete | 2.8 to 3.8 kg/m² (full system) | 84 to 114 kg | 5 to 6 |
| Weathercoat GP at 1.5 mm | 1.5 to 2.0 kg/m² per mm | 68 to 90 kg | 4 to 5 |
These are our own calculations from Terraco’s consumption figures. Add extra for corners, upstands and waste. Terracrete must be mixed in full kits only.
Applying Terracrete step by step
- Prepare. Remove coatings, laitance and unsound concrete; grind off ridges, repair cracks and form fillets in corners. For larger repairs, see our guide to repairing concrete with Terramix.
- Reinforce details. Bed Terratape or Terraco Joint Reinforcing Strip at wall/floor corners, pipe entries and drains.
- Prime. Prime dry or porous surfaces with the Terrabond A supplied in the kit, diluted 1:3. Saturate other surfaces with water, leaving none standing. Our Terraco primer guide explains the options.
- Mix. Add the powder slowly to the resin and mix for at least 3 minutes at 200 to 600 rpm. Rest 5 minutes, remix for 30 seconds. Never add water.
- Apply 2 to 3 coats by brush or broom, each 0.75 to 1.0 mm and at right angles to the last, at least 6 hours apart.
- Tile or test. Tile after at least 3 days. Flood test after at least 7 days.
Terraco gives application limits of 5°C to 40°C and no more than 80% relative humidity, so plan around the hottest, most humid days.
Frequently asked questions
Can I leave Terracrete exposed?
The data sheet gives a 2.0 mm total thickness for exposed use, against 1.5 mm under tiles. For roofs that will be walked on, Weathercoat GP is the system Terraco describes as walkable after drying.
Can either be used on balconies and terraces?
Terracrete lists patios; Weathercoat GP lists roofs and wet room floors. For detailing on roofs, terraces and balconies, see our waterproofing guide.
Buying Terraco waterproofing in Sharjah and Dubai
Al Tashteb Al Saree is an authorised Terraco distributor and supplies Terracrete and Weathercoat GP direct from the manufacturer. Message us on WhatsApp with the product, area and location. You can also browse every Terraco product we supply.
Sources
- Terraco UAE: Terracrete technical data sheet (PDF, version 03.2018)
- Terraco UAE: Weathercoat GP technical data sheet (PDF)
Retrieved 31 October and 1 November 2026. Check the latest Terraco data sheet before specifying. Quantities are our own calculations. The main image is illustrative.
