About DR.FIXIT FLEXI PU 270(1)
91 000 74051 Dr. Fixit Flexi PU 270(I) A high-performance, solvent-based, one-component, polyurethane waterproofing membrane. It is liquid-applied, cures upon contact with air moisture, and forms a highly flexible, seamless, and elastic protective layer.
Primary Function: To provide a durable, long-lasting, and root-resistant waterproofing barrier for a wide variety of structures, capable of bridging cracks and withstanding significant structural movement.
Key Features & Benefits (from TDS):
Highly Elastic & Flexible: Exceptional elongation (400%) to bridge cracks up to 2mm and accommodate movement.
Seamless Membrane: Forms a continuous, joint-free layer, eliminating weak points.
Excellent Adhesion: Bonds strongly to most substrates (concrete, metal, asbestos, etc.).
Breathable: Allows water vapour to escape from the structure (permeable).
Durable: Resistant to water, frost, chemicals, oils, detergents, and plant roots.
Wide Temperature Range: Maintains properties from -40C to +80C.
Root Resistant: Certified as resistant to plant roots (EN 13948), making it ideal for roof gardens.
Q1: How is this product applied?
A: It is typically applied in 2 or 3 coats by roller, brush, or airless spray.
Surface Prep: Surface must be clean, sound, and absolutely dry (<5% moisture). New concrete must cure for 28 days.
Priming: Absorbent surfaces must be primed with Dr. Fixit Primer PU or Dr. Fixit Pidipoxy MIFP.
Application: Apply the first coat. Apply the second coat after 12-18 hours (but within 48 hours).
Reinforcement: Reinforce critical areas (corners, joints, pipes) with Geotextile Fabric embedded in the wet coating.
Q2: What is the coverage area?
A: The total consumption is approximately 1.2 1.5 kg per square meter for a 2 or 3-coat system. Actual consumption depends on surface porosity and application method.
Q3: How long does it take to cure?
A:
Tack-free: 5-6 hours (at 20C, 50% RH)
Light foot traffic: 24 hours
Final cure: 7 days
Q4: Does it need a protective layer?
A: Yes, protection is mandatory.
For terraces: Protect with a 40-50mm concrete screed (M20 grade) laid over a geotextile separation layer.
For roof gardens: Follow the screed with finishing layers (brickbat coba, tiles, etc.).
Alternatively, it can be finished with Dr. Fixit PUTC (polyurethane top coat) for UV stability and colour.
Q5: Can it be applied on wet surfaces?
A: No. Absolutely not. The surface must be completely dry (<5% moisture content). The TDS explicitly warns: "Do not wash surface with water." before application.
Q6: What is the shelf life?
A: 9 months from the date of manufacture when stored in its original, unopened container in a dry, cool place (5C to 30C), protected from moisture and direct sunlight.
Q7: Is it safe? What precautions are needed?
A: Caution Required. The product contains isocyanates. During application, you must wear:
Protective clothing
Chemical-resistant gloves
Eye goggles
Avoid contact with skin and eyes. Ensure adequate ventilation. Always refer to the Material Safety Data Sheet (MSDS) before use.
Q8: How does it handle cracks?
A: It has excellent crack-bridging capabilities:
It can bridge dynamic cracks up to 2mm wide.
Larger cracks and joints must be pre-sealed with Dr. Fixit PU Sealant and reinforced with geotextile fabric before the general membrane application.
Superior Waterproofing PerformanceDR.FIXIT FLEXI PU 270(1) offers highly effective waterproofing for various surfaces, such as roofs, terraces, balconies, and podiums. Its flexible, crack-bridging nature ensures long-lasting protection against water ingress, even in extreme conditions.
Easy Application and HandlingPackaged in a convenient 20 kg pail, this liquid polyurethane membrane is ready to use and easily applied using a brush or roller. It dries to the touch within 4 to 6 hours and achieves a full cure in 7 days, making it suitable for both small and large construction projects.
Durability and StorageWith over 400% elongation at break and excellent tensile strength, the product withstands structural movements and UV exposure. Store it in a cool, dry area, away from direct sunlight, and its sealed shelf life extends up to 12 months, ensuring extended usability.
FAQ's of DR.FIXIT FLEXI PU 270(1):
Q: How should DR.FIXIT FLEXI PU 270(1) be applied for optimal waterproofing?
A: Apply DR.FIXIT FLEXI PU 270(1) directly from the pail using a brush or roller to cleaned and primed surfaces. For effective waterproofing, use 1.5-2.0 kg/m2 across two coats, ensuring seamless coverage.
Q: What surfaces are suitable for the application of this polyurethane waterproofing membrane?
A: This product is ideal for waterproofing roofs, terraces, balconies, and podiums, providing flexible protection in diverse construction environments.
Q: When does the membrane achieve full waterproofing effectiveness after application?
A: While it becomes touch dry within 4-6 hours, DR.FIXIT FLEXI PU 270(1) reaches its full curing and performance capabilities in 7 days after application.
Q: Where should the product be stored to maximize shelf life?
A: Store the unopened pail in a cool, dry location away from direct sunlight to preserve quality. Proper storage extends the product's shelf life up to 12 months.
Q: What are the main benefits of using DR.FIXIT FLEXI PU 270(1)?
A: Key benefits include exceptional flexibility (over 400% elongation), crack bridging ability, high solid content, UV resistance, and durable waterproofing, making it suitable for demanding construction conditions.
Q: Is DR.FIXIT FLEXI PU 270(1) safe to use and does it have a strong odor?
A: The product is non-poisonous, has a mild odor, and is safe for use in construction applications when proper handling guidelines are followed.
Q: Why choose DR.FIXIT FLEXI PU 270(1) over other waterproofing solutions?
A: It offers a high-performance, seamless membrane with excellent flexibility and durability, ensuring long-term protection compared to conventional materials.