Leaking balconies and terraces
Temporary transparent over-tile leak treatment for prepared balconies, courtyards and terraces with positive falls
Forspec
ACTFLEX 400 Clear – Transparent Waterproofing Membrane
- Regular price
- $249.95 AUD
- Sale price
- $249.95 AUD
- Regular price
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- Transparent waterproof membrane
- UV resistant for exposed sunlight
- Foot trafficable once cured
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Overview & Features
- Maintains original substrate appearance
- Suitable for internal and external use
- Foot trafficable once cured
- Low VOC and non-flammable formulation
Application Guide
- Surface inspection and repairs
- Inspect for voids, cracks, protrusions, loose grout and unstable or damaged areas. Remove and replace compromised grout with new grout, ACTFLEX MS PRO or SOUDAL T-REX. Replace cracked tiles. Repair cracks in concrete, render or screeds with a suitable repair mortar or MS polymer sealant.
- Cleaning and drying
- Remove laitance, debris and friable material with stiff-bristle brushes, scrapers and vacuum equipment. Treat moss and mould with one part household bleach to two parts water, rinse thoroughly and allow to dry. Remove grease with suitable detergent, rinse with clean water and dry completely. Keep the surface free from water or rain for at least 3–5 days and confirm moisture content is below 4%.
- Mixing and application
- Mechanically mix two parts ACTFLEX 400 Clear with one part water for brush or roller application; for example, 1 kg product with 0.5 L water. Apply neat by trowel. Use a trowel, brush or roller, with a mohair roller recommended for the first coat. Fill missing grout areas with a scraper and trowel where required.
- Coat sequence and curing
- Apply two to three coats. Allow at least four hours between coats and apply all coats within 48 hours. Achieve a minimum 0.5 mm DFT over joints, grout lines, mortar, concrete and level surfaces, and 0.2 mm DFT over tiles. The application instructions require 5–7 days full cure after the final coat at 25°C and 50% RH, without water interruption.
- Slip resistance
- For a slip-resistant finish, broadcast ACTFLEX Anti-Slip into the wet first coat, then blow off excess before subsequent coats.
- Critical limitations
- Apply only to clean, completely dry surfaces between 10°C and 26°C. Do not apply if rain is forecast within 24 hours. Use only on floors with positive falls and no continuous ponding. ACTFLEX 400 Clear is not a vapour barrier, does not resist hydrostatic pressure or rising damp, is not vehicle trafficable, and is not compatible with silicone or chlorine-based products. Test compatibility before use. It is a temporary tiled-area leak solution with an expected service period of up to five years that is not guaranteed.
Specifications & Standards
- Product type transparent surface waterproofing membrane
- Colour clear semi-gloss finish
- Application method roller brush or trowel
- System build 2–3 coats
- Coverage approx 3 m² per kg depending on surface porosity
- Recoat time minimum 4 hours
- Waterproof time approx 3 hours
- Full cure 5–7 days at 25°C
- Minimum substrate temperature 10°C
Product Documents
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Applications
Shower
Balcony
Podium
Terrace
Internal Wet Areas
External Waterproofing
Exposed Finish
Estimate Material Requirements
Estimate the quantity of product required based on the project area. Calculations are indicative only and should be verified by the installer before application.
Recommended: 3 coats
- Estimated Quantity Required
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- Total Coverage
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- Waste Allowance Applied
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Common Applications
Common applications where this product is typically specified.
Technical Specifications
Key technical properties of this product. Refer to the Technical Data Sheet for complete installation and performance information.
| Mixing Ratio | Brush or roller: 2 parts ACTFLEX 400 Clear to 1 part water. Trowel: apply neat. Mechanically stir. |
|---|---|
| Coverage | Approx. 3 m²/kg: 1 kg = 3 m²; 3 kg = 9 m²; 7 kg = 21 m². Coverage depends on the surface. |
| Recommended Coats | Two to three coats; apply all coats within 48 hours |
| Dry Film Thickness | Minimum 0.5 mm over joints, grout lines, mortar, concrete and level surfaces; 0.2 mm over tiles |
| Hydrostatic Resistance | Not suitable for hydrostatic pressure, rising damp or continuous ponding |
| Elongation at Break | 100% |
| Tensile Strength | 1.5 mPa (manufacturer-stated unit in TDS) |
| Recoat Time | Minimum four hours between coats |
| Full Cure | Properties table: 72–120 hours; application instructions: allow 5–7 days after the final coat at 25°C and 50% RH |
| Suitable Substrates | Tiles, timber, pavers, masonry, concrete, terracotta, bricks and sandstone, subject to preparation and compatibility testing |
| Internal / External Use | Internal and external; suitable for exposure to sunlight |
| Application temperature | 10°C–26°C; do not apply if rain is forecast within 24 hours |
| Odour / VOC | Odour free; low VOC |
Need Technical Advice?
Not sure if this product is suitable for your project?
Our technical team provides independent advice on product selection, compatibility and waterproofing systems.
Independent product advice backed by real-world waterproofing experience.
Contact Technical Support
(07) 3667 9878
Monday–Friday
7:00 am – 3:00 pm AEST
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