Contact Us

Complete the simple form below to find out more about Watertite Roof Waterproofing System – we’ll be in touch as soon as possible!

*We, Leeson Polyurethanes Ltd will hold your name and email address in order to send you our newsletter. We may share your information with other Leeson Polyurethanes Ltd partners in order to provide you with relevant information keeping you up to date with the latest industry news. We would like to contact you by email to let you know about events and initiatives that may be of interest to you. If you do not wish to hear about these, please advise us on You also have the right to require us to correct any inaccuracies in your information.

Watertite Roof Waterproofing System



A seamless roofing system based on moisture triggered polyurethane technology. The system consists of a chopped strand reinforced base layer, sealed with a finish coat


  • Roofs
  • Balconies
  • Water Towers


  • Seamless – no joints to leak
  • Excellent Waterproofing
  • UV resistant
  • No embrittlement with age
  • Bonds to many existing roof structures
  • Range of colours
  • Fire Rated to EN 1187 B Roof (t4)
Download Datasheet
Contact us for more information


Product: Leeson Watertite Roofing System
Thickness: Determined by application requirements


The substrate should be dry to 75%RH as per BS8204 and free from rising damp.

Asphalt roofing: No primer required.

Concrete: Primer must be used. Minimum 25N/mm2, free from laitance, dust and other contamination.


Primer: Various, see datasheet
Embedment: Leeson Watertite EC (PU4923),Chopped Strand Matting (225gsm)
Sealer:  Leeson Watertite UV (PU4924)


The installation should be carried out by an experienced contractor, details of contractors in your area can be obtained by contacting the company.


Leeson Polyurethane’s products are guaranteed against defective materials and manufacture and are sold subject to its standard Terms and Conditions of Sale, copies of which can be obtained on request.




Download Datasheet
Contact us for more information

Watertite duck

Download the leaflet

Property Test Method Watertite 25 Year Typical Values
Water Vapour Transmission ASTM E-96 6.048g m2/ day
Base Coat (lt/m2) 1
Chopped Strand Reinforcement 225 gsm
Top Coat (lt/m2) 1.75
Tack-free time at 19oC 85 – 95 minutes
Shower Proof 30 minutes
Tensile Strength ASTM D-648 Method A, Die C 11 N/mm2
Elongation@ Break ASTM D-648 Method A, Die C 25.5%
Modulus ASTM D-648 Method A, Die C 260 N/mm2


To ensure you are specifying a fit for purpose surface for your project please consult our Area Sales Manager for your area or visit our website.