Mapei
PURTOP 400 M
PURTOP 400 M is a waterproofing membrane with high tear resistance , exceptional elasticity , and resistance to chemicals , for bridge decks and large roofs, both new and existing structures. A hybrid, two-component, solvent-free polyurea membrane, it is sprayed on directly in situ using a high-pressure bi-mixer pump. PURTOP 400 M has an elongation capacity of over 400% (ISO 37), does not generate overload on the supporting structure and once cross-linked, is completely inert.
SKU: MAPEI-PURTOP-400-M-952
About this itemMAPEI CERTIFIED
- Tensile Strength: Exceeds 12 N/mm² (ISO 37) SOLVENT-FREE
- Elongation at Failure: Greater than 400% (ISO 37) HIGH TENSILE STRENGTH
- Tear Strength: Exceeds 45 N/mm (ISO 34-1) CERTIFIED FOR BRIDGE DECKS
- Hardness: Shore A = 70, Shore D = 35 (DIN 53505) MAPEI CERTIFIED
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Uses & Advantages
Primary Uses
- Waterproofing bridge and viaduct decks
- Waterproofing inverted and sheet metal roofs
- Waterproofing steps and stands in stadiums (with suitable finishing products)
Key Advantages
- Solvent-free and contains no VOCs, ensuring environmental safety
- Immediate waterproofing and rapid setting for foot traffic
- Exceptional tensile strength and tear resistance
- High crack-bridging capacity, even at low temperatures
- Elongation capacity exceeding 400% (ISO 37)
- Resistant to alkalis, diluted acids, and root penetration
FEATURES & BENEFITS
Tensile Strength
Exceeds 12 N/mm² (ISO 37)
Elongation at Failure
Greater than 400% (ISO 37)
Tear Strength
Exceeds 45 N/mm (ISO 34-1)
Hardness
Shore A = 70, Shore D = 35 (DIN 53505)
Waterproofing Performance
No water ingress (EN 1928, method A)
Dynamic Crack-Bridging Capacity
Class B4.2 at +23°C and 0°C (EN 1062-7)
Abrasion Resistance
Weight loss < 300 mg (EN ISO 5470-1)
Resistance to Thermal Shock
No swelling, cracking, or delamination; bond strength ≥ 3.3 N/mm² (EN 13687-5)
Purtop 400 M is a two-component, solvent-free, hybrid polyurea membrane designed for high-performance waterproofing applications. Applied using a high-pressure bi-mixer spray system, it forms a seamless, durable, and highly elastic waterproof coating with exceptional tensile strength, tear resistance, and crack-bridging capacity. This product is ideal for demanding environments such as bridge decks, large roofs, and other structures requiring robust waterproofing solutions.
Key Specifications
Density (Component A1.08 g/cm³
Density (Component B1.11 g/cm³
Application Temperature+5°C to +40°C
Reaction TimeApproximately 2 minutes
Gel TimeApprox. 7 seconds at +23°C
Shelf Life12 months (stored at +15°C to +25°C
Packaging / Pack SizePurtop 400 M is supplied in metal drums: Component A in 220 kg drums and Component B in 225 kg drums.
Certified standard values under UAE climate conditions.
DOWNLOADS & DATA SHEETS
Key Performance Benefits
Tensile Strength
Exceeds 12 N/mm² (ISO 37)
Elongation at Failure
Greater than 400% (ISO 37)
Tear Strength
Exceeds 45 N/mm (ISO 34-1)
Hardness
Shore A = 70, Shore D = 35 (DIN 53505)
Waterproofing Performance
No water ingress (EN 1928, method A)
Dynamic Crack-Bridging Capacity
Class B4.2 at +23°C and 0°C (EN 1062-7)
Storage & Handling Guidelines
- Store in original unopened container in cool, dry indoor conditions.
- Keep away from direct sunlight, rain, and extreme heat.
- Shelf life is 12 months when stored properly between +5°C and +35°C.
Why Buy From pilehead.com?
Genuine Mapei Product
Competitive UAE Pricing
Bulk Order Support
Fast Jobsite Delivery
FREQUENTLY ASKED QUESTIONS
The theoretical consumption is 2.2 kg/m² for a 2 mm thickness on a smooth surface. Consumption may increase on rougher surfaces.
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