Description
Terraco Weathercoat GP – Two-Component Elastomeric Waterproofing
Weathercoat GP is a two-component cement-acrylic coating that forms a permanent, flexible waterproof layer on concrete and masonry. The kit contains a 5kg acrylic resin and a 15kg cement-based powder, mixed on site.
Where to use
- Flat roofs, balconies and patio terraces
- Wet room walls and floors, including beneath ceramic tiles
- Swimming pools, ponds and drinking water tanks
- Foundations, retaining walls and water channels
Key properties
- Highly flexible (elongation >50%), bridges cracks up to 3.2mm
- BS 6920 compliant for contact with drinking water
- EN 14891 compliant: tile adhesives and mortars bond directly to it
- Vapour permeable and water based (VOC <1 g/l)
- Adheres to new and old in-situ and precast concrete
How to apply
- Clean the surface: remove laitance, loose material, oil and grease. Repair cracks and defects.
- Prime with Terraco Terrabond A (1 part primer : 3 parts water).
- Pour all the resin into a clean bucket, slowly add all the powder and mix with a slow drill (200–600 rpm) for at least 3 minutes. Leave for 5 minutes, then remix for 30 seconds. Do not add water.
- Apply at least two coats at right angles, 1.5–2.0mm total thickness, by brush or broom. Leave at least 6 hours between coats.
- Use within 1 hour of mixing. Do not apply if rain is expected within 24 hours. Not for use over bitumen coatings.
Allow 7 days’ cure before continuous water immersion. Rinse drinking water tanks thoroughly before use.
Technical data
- Mix ratio: 1 resin : 3 powder by weight
- Consumption: approx. 1.5–2.0 kg/m² per mm (about 5–7 m² per kit)
- Pot life: 1–1.5 hours at 30°C
- Application temperature: 5–40°C
- Hardness: 60–70 Shore A
Packaging & storage
20kg kit: 5kg resin jerrican + 15kg powder bag. Shelf life 12 months in sealed packaging, stored dry and protected from heat and frost.
Safety
Avoid prolonged contact with skin and eyes. Read the Safety Data Sheet before use.
Packaging design may vary from the image shown.