Liquid Roofing


  • Application

    PR-20 Liquid System

    The PR-20 system is part of the Langley Pararapide range of resin-based, cold-applied liquid waterproofing systems. Pararapide is a fully reinforced, two-component, high-performance PMMA (polymethyl methacrylate) system with a catalytic action ensuring a fast and controlled curing time even at very low temperatures. The wet-on-wet application of components, each with cure times less than 30 minutes, makes this an ideal system for access walkways, stairways and balcony areas. The system carries a 20 year independently insured guarantee covering design, materials, workmanship and consequential loss. 


    When to Specify

    This system is for projects where a flame-free application and slip-inhibiting finish is required. To be installed when an existing system is to be overlaid (avoiding costly strip-ups). Suitable for most common types of waterproo?ng including asphalt and bituminous membranes.

  • Downloads
  • BIM

    Building Information Modelling (BIM), continues to transform the construction landscape in both the public and private sector by providing  digital representations of a managed physical asset.

    BIM is a process that enables documentation and detailed, structured information to be stored and maintained in a digital equivalent of a built asset. Instead of painstakingly re-keying information, for example, at handover of the asset, BIM digital information can be seamlessly transferred and used for maintenance and the ongoing evolution of that asset.

    BIM essentially holds all product information centrally and digitally for ease of retrieval and reference. It is a collaborative process involving the entire supply chain and is a way of working, managing information in a multi team environment, enabling everyone to understand a building through the use of a digital model.

    The digital model holds all the information needed to assist in the design, construct and maintain that building.

    How to download BIM Objects - FREE

    Langley has committed and invested in the fastest-growing building information modelling (BIM) library in the UK, with the addition of its roofing systems available to download free of charge.

    All Langley BIM  objects within the NBS library meet the requirements of the internationally-recognised NBS BIM Object Standard.

    For access to download BIM objects click here

Further Information

Find out more about our roofing services by calling us on 01327 704778 or emailing us at [email protected]