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Due to its high tear strength and exceptional flexibility and resistance to chemicals, Purtop 400 M is suitable as a waterproofing membrane for large roofs and bridge decks. Also, because of its special characteristics, Purtop 400 M is suitable for waterproofing both new and existing structures. Purtop 400 M is one of the waterproofing membranes used in Purtop System Roof, a dedicated system for roofs (roofs suitable for foot traffic, inverted roofs and roof gardens), and in Purtop System Deck, a dedicated system for roofs suitable for vehicles, bridge decks and viaducts.
- Two-component, solvent-free, modified polyurea resins formulate
- Must be applied in layers at least 2 mm thick - its very short reaction time means it may also be applied on vertical surfaces
- Forms a continuous waterproof layer which adapts to any shape of substrate without cracking
- For professional use only
Price on application - contact our sales team on 0113 2455450 or send a message to [email protected]
Professional use only - from the 24th August 2023, adequate training is required before industrial or professional use of this product.
Should you require training, visit - https://www.safeusediisocyanates.eu/
Description
Professional use only - from the 24th August 2023, adequate training is required before industrial or professional use of this product.
Should you require training, visit - https://www.safeusediisocyanates.eu/
Purtop 400 M has excellent bond strength and once reticulated, it forms a continuous strong, flexible membrane.
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Features & Benefits
- Some application examples:
- Waterproofing roof gardens and inverted roofs
- Waterproofing sheet metal roofs
- Waterproofing steps and stands in stadiums (with a suitable finishing product)
- Waterproofing bridge and viaduct decks
- Contains no solvents and no VOC (volatile organic compounds)
- Immediate waterproofing and rapid set to foot traffic
- Excellent tensile strength (> 12 N/mm² according to ISO 37)
- Excellent tear strength (> 45 N/mm according to ISO 34-1)
- High crack-bridging capacity both static and dynamic, even at low temperatures
- Elongation capacity higher than 400% (ISO 37)
- Excellent resistance to alkalis and diluted acids
- Quick reaction of product when applied by spray: gel time at +23°C takes approx. 7 seconds
- No reinforcement required
- Does not form overloads on load-bearing structures
- After reticulation, the product is completely inert
- Certifications
- Complies with the principles defined in EN 1504-9 (“Products and systems for the protection and repair of concrete structures: definitions, requirements, quality control and evaluation of conformity. General principles for use of products and systems”) and the requirements of the EN 1504-2 coating (C) according to principles PI, MC, PR, RC and IR (“Surface protection systems for concrete”)
- Membrane certified for use underneath asphalt on bridge decks in compliance with ETAG 033 (please refer to Purtop 400 M System Deck System Sheet)
- Resistant to root penetration according to CEN/TS 14416
Recommendations & Limitations
- Do not apply Purtop 400 M onto substrates polluted with oil, grease or dirt in general
- Do not apply Purtop 400 M on substrates which have not been thoroughly cleaned and primed
- Do not apply Purtop 400 M on substrates subject to rising damp
- A primer for damp substrates must be used whenever the level of residual humidity in the substrate is higher than 4%, such as Triblock P
- Do not dilute Purtop 400 M with water or solvents
- Do not use Purtop 400 M on surfaces constantly immersed in water (such as swimming pools, fountains, storage tanks)
Application & Preparation
Please refer to the data sheets in the tab above for further information.
Product Details
9855-976676
Data sheet
- Manufacturer
- Mapei
- For Use By
- Professional Use
- Interior / Exterior Use
- Exterior Use
- For Use On
- Wood
- For Use On
- Concrete
- For Use On
- Metallic Substrates
- For Use On
- Bituminous Surfaces
- For Use On
- Roofs
- Application Method
- Roller
Spray - Single, Two or Three Pack
- Two-Pack
- Pack Size
- 210kg, 225kg
- Suitable For Use On
- Metal
- Suitable For Use On
- Concrete
- Suitable For Use On
- Wood
- Suitable For Use On
- Bituminous Surfaces
- Suitable For Use On
- Metal Roofs
- Application Method
- Roller
- Application Method
- Spray
- Manufacturer
- Mapei
- Usages
- Chemical Resistant
- Usages
- High Tear Strength
- Product Usage Type
- Membrane
- Product Range
- Purtop
Questions
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IMPORTANT SHIPPING & DELIVERY INFORMATION
Mapei Purtop 400 M is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT