Flexseal 400

Key Benefits

• Flexible water barrier
• 400% elongation
• Flexible film
• Low water uptake
• Breathable coating
• Membrane compatible
• Excellent tensile strength
• Water based

Description

A flexible acrylic copolymer waterproofing coating formulated for walls, galvanised iron and tiled roofs. Forms a flexible film with low water uptake that seals the underlying surface while allowing controlled moisture-vapour transmission.

Recommended Uses

Waterproofing correctly prepared roofs and parapet walls. May be used alone or with suitable reinforcing membrane in areas where ponding may occur.

Surface Preparation

Remove loose and flaking coatings. Sand where required and remove dust. Surface must be clean, sound and free of grease, oil and contaminants. Apply the correct primers and undercoats for the substrate.

Application

Apply by roller or brush. When used with reinforcing membrane, apply at a total consumption of approximately 1.25 L/m². Fully embed the membrane without wrinkles or trapped air.

Drying

Touch dry	1 hour at 23°C
Hard dry	5 hours at 23°C
Fully cured	1 week

UV Topcoat Required

After waterproofing is complete, apply a compatible acrylic roof paint to provide UV resistance and protect the waterproofing system.

Safety Precautions

Water-based and non-flammable in wet form. Keep out of reach of children. Avoid eye and prolonged skin contact. Wear gloves, overalls and safety glasses. Provide ventilation in enclosed areas.

First Aid

• Eyes: Flush with plenty of clean water.
• Skin: Wash with soap and water.
• Ingestion: Drink water, do not induce vomiting and seek medical advice. Obtain medical attention if irritation persists.

Environment & Disposal

Do not discharge directly into drains or waterways. Absorb spills with sand or rags before drying. Dispose of settled solids through an authorised contractor according to local requirements.

Technical Data

Specific gravity	1.19 kg/L
pH	8.9
Tensile strength	3.7 MPa
Elongation	400%
Water uptake	1 day 9% / 5 days 16%
Touch dry	1 hour at 23°C
Hard dry	5 hours at 23°C
Fully cured	1 week
Coverage with membrane	1.25 L/m²

Product images are for illustrative purposes only. Actual product packaging, container design and appearance may vary.