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Inverted Flat Roof Waterproofing

Inverted flat roof waterproofing combined with a thermal insulation is essential for a buildings waterproofing and energy saving thermal insulation. The MARISEAL SYSTEM® inverted flat roof waterproofing method offers a simple build-up waterproofing, that features a protected waterproofing membrane and loose laying insulation boards.

The inverted waterproofing insulation system is applicable for all types of flat roofs, as it offers an efficient solution for new construction but also for renovation of old flat roofs as is it possible to install an inverted roof over an existing roof build up.


The MARISEAL SYSTEM® is the technologically advanced, premium liquid polyurethane waterproofing system that offers easy application, full certifications, and most importantly guaranteed long lasting results.

The MARISEAL SYSTEM® consists of different products, dependent on the roofs characteristics.

Advantages of MARISEAL SYSTEM® at a glance

- Simple Application (roller or airless spray) - When applied it forms seamless membrane without joints
- Resistant to water, heat and frost - Resistant to root penetration
- Crack-Bridging - Water vapor permeable
- Provides excellent thermal, weather and UV resistance - Waterproofs old bitumen-, asphalt felts by covering them
- Provides high sun reflectivity, contributing to thermoinsulation - Remains flexible over a temperature span of -50 to +90 degrees 
- Provides excellent adhesion to almost any type of surface - Can be used for pedestrian and vehicular traffic
- Resistant to detergents, oils, seawater and domestic chemicals - Application does not need the use of open flames (torch)
- Over 15 years of positive feedback worldwide  


Proposed Build Up


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Roof N Stop Ltd.


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01 621 5677