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Purtop Waterproofing Membranes – a range of polyurea-based membranes – are suitable for applications on various types of substrate.

The PURTOP range is a series of continuous, two component, polyurea-based membranes without solvents, suitable for application on various types of substrate. They may be used to waterproof both new and existing structures and have the following characteristics:
-  Adapt perfectly to any shape of substrate.
-  Excellent bond to various types of substrate thanks to a complete range of primers for any type of material.
-  Immediate waterproofing and set to foot traffic.
-  Excellent tensile and tear strength.
-  High static and dynamic crack-bridging capacity, including at low temperatures.
-  Considerable elongation capacity.
-  Excellent resistance to alkalis, diluted acids and detergents.
-  No reinforcement required.
-  Do not generate overloads on load-bearing structures.
-  Thanks to the special finishes available, the colour of the membranes are unaffected by UV rays.
-  All PURTOP membranes are marked CE (EN 1504-2).



Purtop 400 M
is a waterproofing membrane for large flat roofs and bridge decks. Purtop 600, on the other hand, is suitable for application on horizontal, sloping and curved surfaces, not subject to traffic, on civil and industrial buildings.
Purtop 1000 is a waterproofing membrane to storage tanks, basins and hydraulic structures in general, as well as any structure requiring protection with a high performance membrane.
Purtop HA is a waterproofing membrane for small- to medium-size terraces and flat roofs, and for repairing surfaces waterproofed with hybrid polyurea and/or pure polyurea-based membranes.

Purtop Systems
There are three complete systems available with Mapei for three specific types of waterproofing applications:
Purtop System Roof
This is a spray applied hybrid waterproofing system for non-trafficked roofs. It is made up of Purtop 600, Purtop 400M, Primer EP Rustop, Primer M, Quartz 0.25, Triblock P, Primer BI, Primer EP Rustop, Primer M, Quartz 0.5 and Mapefloor Finish 65.
It is mainly based on the use of Purtop 600 and Purtop 400 M and has excellent crack-bridging capacity and resistance to stress of the membranes. This system is extremely versatile and suitable for numerous types of roof.
It may be applied on various types of substrate, such as concrete, cementitious screeds, terrazzo, porcelain and klinker titles, smooth and stated bitumen membranes resistance to ultra violet rays, aggressive chemicals and wear. Mapefloor Finish 55 two component, aliphatic polyurethane coating should be applied over the surface to give it an opaque, non-slip finish.



Purtop System Tank
This is a spray applied pure polyurea-based waterproofing system for storage tanks, basins and hydraulic structures in general. It is made up of Purtop 1000, Triblock P, Primer EP, Rustop and Primer M. It is mainly based on the use of Purtop 1000.

Its capacity to bond to various types of substrate and its rapid application procedure, as well as its immediate waterproofing and set-to-foot properties make it possible to repair the waterproofing capacity of various types of storage tanks and hydraulic structures in general, while the high mechanical strength and dynamic and static crack-bridging capacity of Purtop 1000 makes this system suitable for application on any type of substrate. The high resistance to chemicals of the membrane also makes it suitable for contact with highly aggressive chemical substances.

Purtop System Deck
This is a spray-applied hybrid polyurea or pure polyurea-based waterproofing system for trafficked roofs and bridges and viaduct decks. It is made up of Purtop 400M, Purtop 1000, Primer SN, Quartz 0.25, Mapefloor I 914, Triblock P, Primer M, Quartz 0.5, Purtop Primer Black and Quartz 1.2. It is mainly based on the use of Purtop 400 M and Purtop 1000.
It is extremely versatile and suitable for numerous types of trafficked roofs, as well as trafficked surfaces typically found on many types of infrastructures. It may be applied on concrete in combination with various finishing products, on industrial flooring, self-locking blocks and asphalt. This system may be used to repair the waterproofing capacity of various types of existing trafficked roofs and decks.

Also, since Purtop membranes are relatively thin, they do not generate overloads on load-bearing structures, and their excellent resistance to high temperatures means that asphalt may be poured directly on their surface.


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