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/

Thanks to its high chemical resistance, exceptional flexibility and tear strength, Purtop 1000 is suitable for waterproofing membranes on storage tanks, basins and hydraulic works in general as well as for all structures requiring a highperformance waterproofing membrane. The special properties of Purtop 1000 also make it suitable for waterproofing both new and existing structures. Purtop 1000 is one of the waterproofing membranes used in Purtrop System Roof, a dedicated system for roofs, in Purtop System Deck, a dedicated system for roofs suitable for vehicles, bridge decks and viaducts, and in Purtop System, a dedicated system for hydraulic structures.

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• Features & Benefits
• Surface Preparation
• Application
• Limitations

Features & Benefits

• Suitable for:
  • Waterproofing roof gardens and inverted roofs
  • Waterproofing metal sheet roofs
  • Waterproofing bridge and viaduct decks
  • Waterproofing basins, storage tanks and hydraulic structures in general
  • Waterproofing storage tanks and cisterns for drinking water
• Forms an excellent bond and can be applied on various surfaces (concrete, metals, etc.) to create a strong, flexible, continuous membrane
• Solvent-free and “no VOC” (volatile organic compounds)
• Immediate waterproofing and set to light foot traffic
• Excellent tensile strength (> 20 N/mm² according to ISO 37)
• Excellent tear strength (> 80 N/mm according to ISO 34-1)
• High crack-bridging capacity, both static and dynamic, even at low temperatures
• Elongation capacity higher than 300% (ISO 37)
• Excellent resistance to alkalis and diluted acids
• Quick reaction times by spray: gel time at +23°C takes approx. 6 seconds
• No reinforcement required; · does not form overloads on load-bearing structures
• After reticulation, the product is completely inert
• 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”)
• Resistant to root penetration according to CEN/TS 14416 and to EN 13948
• Suitable for contact with drinking water according to Italian Ministerial Decree DM 174/04

Surface Preparation

Surfaces must be prepared accordingly depending on the type of substrate, for example by sand-blasting, shot-blasting, scarifying, bush-hammering or other methods. The substrate must then be treated with a suitable primer as described below.

Application on concrete substrates and cementitious screeds:

• Prepare the surface by sanding or shot-blasting to remove all traces of oil, grease, dirt and any other material or substances which could compromise the bond of the waterproofing system
• The compressive strength and tear strength of the surface must be ≥ 25 MPa and ≥ 1.5 MPa respectively
• Remove all dust and any crumbling or detached parts from the substrate to leave a dry, porous, slightly rough surface with no contaminants
• Repair any hollows, cavities and detached parts in the substrate with suitable products from the Mapegrout and Planitop ranges
• Choose the most suitable product according to the thickness to be repaired, the time available and the operating conditions on site
• After preparing the surface as described above, apply a coat of Primer SN (two-component epoxy primer with fillers), with a smooth spatula or rake and sprinkle the surface with Quartz 0.5
• The waterproofing membrane must be applied within 12-24 hours from the application of the primer (at a temperature between +15°C and +25°C)
• If the level of humidity in the substrate is higher than 4% and it is not possible to wait until it drops to a lower value, apply two or more coats of Triblock P three-component epoxy-cementitious primer according to the condition of the substrate, until the system is completely sealed
• When the primer has cured sufficiently (3-7 days) apply a coat of epoxy primer (such as Primer SN or Mapecoat I 600 W)

Application on bituminous membranes:

• Clean the bitumen membrane to remove all traces of oil, grease, dirt in general and any other substances or material which could affect adhesion of the following coat of primer. Remove all dust with a vacuum cleaner or compressed air
• The membrane must be perfectly dry before inspecting the surface and any damage in the membrane, such as blistering, tears or detached areas, must be repaired before applying the primer
• Apply Primer BI ready-to-use, synthetic resin-based impregnator in solvent on the horizontal surface and vertical overlaps or Primer PU60, one-component polyurethane primer or alternatively two-component epoxy primer in water dispersion Mapecoat I 600 W, diluted at a 1:1 ratio with water
• Apply the waterproofing membrane within 2 to 4 hours from the application of the primer (at a temperature between +15°C and +25°C)

Application on metal surfaces:

• In case of metal surfaces or if there are any metallic elements, apply Primer EP Rustop two-component epoxy primer with a brush, roller or by airless spray after cleaning and treating them accordingly. The waterproofing membrane must be applied within 6-24 hours from the application of the primer (at a temperature between +15°C and +25°C)
• As an alternative, Mapedeck Primer 200, adhesion promoter for polyurethane systems can be applied. The application of the membrane on this primer must be carried out within 1-3 hours (at a temperature between +15°C and +25°C)

Application on wooden substrates and OSB panels:

• Clean the substrate to remove all traces of dust, dirt and other deposits
• Calculate the width and pitch of the joints between the panels in order to select the most suitable product to treat these joints
• Apply a coat of Primer SN twocomponent epoxy primer with fillers on the clean, dry substrate and sprinkle the surface with Quartz 0.5
• Apply the waterproofing membrane within 12 to 24 hours from the application of the primer (at a temperature between +15°C and +25°C)

Application

• Purtop 1000 must be applied at a temperature between +5°C and +40°C
• Before applying Purtop 1000, remove all dust from the surface with an industrial vacuum cleaner
• The temperature of the substrate must be at least 3°C higher than the dew-point temperature, while the level of residual humidity must be no higher than 4%
• Component A must be mixed carefully before use until it has an even colour
• To apply Purtop 1000 membrane, use a high-pressure bi-mixer pump with flow and temperature control, with a selfcleaning gun. The application temperature of the two components must be between +65°C and +85°C and the pressure must be between 160 and 200 bar
• Purtop 1000 must be applied continuously on all the horizontal and vertical surfaces. If application of Purtop 1000 is interrupted and then taken up again after the maximum covering time (2 hours), an overlap of at least 30 cm must be made after applying a coat of Primer PU60
• Please note that although Purtop 1000 is suitable for surfaces that are completely immersed and is resistant to numerous chemical agents, nonetheless we recommend that the compatibility of the membrane and the substances it will come into contact with is always checked beforehand
• Purtop 1000 gradually turns yellow if exposed to UV rays. If the membrane is exposed to UV rays, apply a coat of Mapecoat PU 20 N two-component, aliphatic polyurethane finish to guarantee durability, with a roller or by spray, or alternatively Mapecoat TC, wear-resistant coloured aliphatic polyurethane finish. Apply the finish within 24 hours of applying Purtop 1000 waterproofing membrane
• If Purtop 1000 is to be covered by asphalt flooring, apply a coat of Purtop Primer Black one-component solvent-based primer over the clean, dry membrane with a roller or airless spray beforehand. Dust the surface of the primer with Quartz 1.2 while it is still fresh. Lastly, before applying the asphalt, spread at least 1 kg/m² of hot bonding layer made from modified bitumen
• When Purtop 1000 is used in swimming pools or ornamental ponds, the following finishing cycle must be applied. Within 24 hours from the application of Purtop 1000, apply a coat of Primer PU60. When the primer is dry to the touch apply Mapecoat PU 20 N two-component, aliphatic polyurethane finish
• Please note that the compatibility between the finish and substances it will become in contact with must be always checked beforehand in case it will be in continuous immersion
• Because of the high bond strength of Purtop 1000, we recommend cleaning solvent naphtha before it starts to set. Once hardened, cleaning must be carried out only mechanically
• Consumption of Purtop 1000 depends on the roughness of the substrate. The theoretical consumption for a smooth surface with a substrate temperature between +15°C and +25°C is 2.2 kg/m² every 2.0 mm of thickness. If the substrate is rougher, consumption increases. If the substrate is damaged, we recommend applying a suitable repairing product beforehand

Limitations

• Do not apply Purtop 1000 to substrates polluted with oil, grease or dirt in general
• Do not apply Purtop 1000 on substrates which have not been thoroughly cleaned and primed
• Do not apply Purtop 1000 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 1000 with water or solvents