Polyurethane waterproofing membrane – advantages- Polyurethane-based waterproofing membranes is a liquid applied system that offers decisive advantages particularly where seamless systems are desired

1. Polyurethane Waterproofing
Membrane – Advantages /
Applications/ Types

2. Polyurethane waterproofing
membrane Advantages
 Easy and fast installation
 seamless finish
 Long term durability and wear-resistant
 UV and weather-resistant
 Resistant to alkaline cleaners, battery acid and
fuels
 No significant load increase on lightweight decks
and roofs
 Resistance to freezing temperature
 Strong adhesion
 Easy and fast installation
 Perfect and aesthetic appearance
 Resistance to corrosion

3. The application method of
Polyurethane Waterproofing
Membrane
 The roof surface must be thoroughly cleaned
 Any cracks on the surface preparation bed is
cut to V section, cleaned and filled with a 1 part
polyurethane based crack filling compound
 The surface must be neutralized by removing
alkalinity
 A two pack polyurethane primer coat is first
applied to the surface to serve as an adhesion
coat
 Primer coat is mixed in the ratio as per
Manufacturers’ specification.

4. The application method of
Polyurethane Waterproofing
Membrane
 A single coat of this primer is applied by brush over the prepared
bed as an adhesion coat. The primer is then allowed to dry for a
minimum of 8 hours before the successive finishing coats of PU
are applied
 Allow to dry for at least 8 hours.
 PU coat is applied by brush or roller in 2 layers. The first layer is
applied 2-3 hours after priming/ The second layer should be
applied crosswise after 8-24 hours, depending on the weather
conditions.
 The PU coating is continued 150 mm up the parapets or walls. It
should also be continued at least 100 mm into the rainwater pipes
 The final Polyurethane coat is sprinkled with a micron layer of
clean sand.

5. Application areas
 Flat roofs
 Pitched roofs
 Balconies
 Plaza decks
 Patio
 Water tanks
 In wet damp floor areas from internally
and externally
 Used to fill the gaps and cracks formed
in the walls or floors of buildings such as
tunnels, bridges, concrete wall

6. Different types of
Polyurethane Waterproofing
Membrane Products
 Single component, ready to use elastic
material
 One-component polyurethane primer
 Two-component polyurethane primer
 Polymer-modified, fiber-reinforced repairing
cement mortar
 Polyester fleece for reinforcing waterproofing
layers
 Polyurethane sealants
 Aliphatic polyurethane-based, ready-to-use
membrane

7. THANK YOU
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e-waterproofing-membrane-advantages-
applications-types/