Contact Us

Complete the simple form below to find out more about PU Binders for Sports Pitch Shock Pads – 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.

    Allsealed Roof Waterproofing System


    A one component; moisture triggered elastomeric urethane coating specifically developed as a high performance waterproofing membrane for use on roof surfaces.




    • Seamless – no joints to leak
    • Excellent waterproofing
    • Good application characteristics for easy by-hand application
    • Short cure times allowing product to be over coated quickly
    • Bonds to many existing roof structures

    Product Specification

    Product: Leeson Roofing System

    Thickness: Determined by application requirements

    Manufacturer: Leeson Polyurethanes Ltd.

    Telephone: + 44 (0) 1926 833367

    Substrate 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.

    Products Included in this System

    Primer: Various, see datasheet

    Embedment: Leeson Base Coat (PU5558 EC)

    Chopped Strand Matting (225gsm)

    Sealer: Leeson Top Coat (PU5574 TC)


    Detailed installation instructions are available
    on request.

    Installation Service

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

    Leeson Allsealed System Guide

    Important Note

    Leeson Polyurethanes’ 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

    Technical Information

    The figures below are typical properties achieved in laboratory tests at 210C and 55% Relative Humidity.

    Test MethodRoof Waterproofing System Typical Values
    Water Vapour TransmissionASTM E-966.048g m2/ day
    Base Coat (lt/m2)1.2
    Chopped Strand Reinforcement225 gsm
    Top Coat (lt/m2)1.75
    Tack-free time at 19oC 85 – 95 minutes
    Shower Proof30 minutes
    Tensile StrengthASTM D-648

    Method A, Die C

    8.02 N/mm2
    Elongation at BreakASTM D-648 Method A, Die C9.90%
    Modulus StrengthASTM D-648 Method A, Die C187.57 N/mm2

    Further Information

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