Rocathaan pure polyureaRocathaan HotSpray.
Commercial spray-applied pure polyurea for seamless flat-roof waterproofing, refurbishment and large new-build applications.
High-performance application
Seamless in seconds.
Plural-component hot-spray equipment forms a fully bonded membrane across large roof areas and complex details.
See technical dataWhat Is Rocathaan HotSpray?
Rocathaan HotSpray (PA 260-FR) is a hot-spray applied, aromatic 100% pure polyurea waterproofing coating used to create seamless waterproof membranes across commercial roof areas.
The system is solvent-free with 100% volume solids and a VOC content of 0 g/kg. It is designed for projects where spray application of a seamless, fully bonded waterproofing membrane is required across large commercial roof areas.
The TDS confirms HotSpray is developed as a seamless roofing system for both new and existing roofs, and is suitable for polyurethane spray foam and other substrates, subject to assessment and preparation.
System suitability depends on substrate condition, surface preparation and project requirements. Contact Forti Nova for technical review before specification.
Why Polyurea?
Spray-applied polyurea creates a seamless, fully bonded membrane across the complete roof area — eliminating the joints, laps and seams where many waterproofing systems most commonly fail.
Seamless Membrane
No joints, laps or seams across the entire roof area. The spray application forms a single continuous membrane from edge to edge.
Complex Detailing
Spray application achieves continuous membrane coverage at penetrations, upstands, rooflights and perimeter details within the same application.
Fully Bonded System
HotSpray bonds directly to the prepared substrate. The TDS confirms the system is suitable for both new and existing roofs, subject to substrate assessment and preparation.
Commercial Applications
Designed for large commercial roof areas. The spray application method creates a continuous polyurea membrane across the full extent of the roof.
Large Uninterrupted Areas
Spray application is suited to large flat roof areas, delivering consistent membrane coverage without the constraints of sheet width.
Refurbishment & New Build
HotSpray is developed as a seamless roofing system for both new and old roofs. System suitability depends on substrate condition and assessment.
Where Rocathaan HotSpray Is Used
Spray-applied polyurea waterproofing across commercial, residential and large-scale building types.
Commercial Roof Refurbishment
Large commercial flat roofs requiring waterproofing refurbishment
Spray application creates a seamless membrane across the full roof area. The TDS confirms HotSpray is developed as a seamless roofing system for both new and existing roofs.
Seamless waterproof membrane without laps or joints across the entire roof area
New Build Roofing
New-build commercial and residential developments requiring flat roof waterproofing
HotSpray integrates into new-build programmes, providing a fully bonded seamless membrane from the outset. System suitability depends on substrate condition and project requirements.
Seamless, fully bonded polyurea membrane on new build concrete and prepared substrates
Apartment Developments
Multi-storey residential and mixed-use developments with flat roof areas
Spray application covers multiple connected roof levels with membrane continuity across the full area, including penetrations and upstands.
Continuous membrane performance across multiple connected roof levels
Podium & Flat Deck Waterproofing
Podium decks, accessible flat areas and new-build flat roof decks
The spray application accommodates deck geometry including upstands and rooflight kerbs, forming a continuous membrane across all surfaces.
Seamless membrane continuity from deck to upstand and rooflight kerb without joints
Complex Roof Details
Rooflight kerbs, pipe penetrations, parapet upstands and complex junctions
Spray application forms a continuous membrane at rooflight kerbs, pipe penetrations and parapet upstands — all within the same application.
No joints at critical waterproofing details — membrane continuous from deck to upstand
Large Scale Waterproofing Projects
School estates, apartment developments and commercial buildings with large roof areas
Spray application is suited to large surface areas. System suitability and application methodology should be confirmed through technical review with Forti Nova.
Seamless membrane coverage across extensive roof areas
Real Project Photography
HotSpray Projects
Real project images showing Rocathaan HotSpray polyurea waterproofing across commercial roof refurbishment, new build and large-scale applications.
Technical Data Sheet
System Performance
All figures below are sourced directly from the Rocathaan HotSpray PA 260-FR Technical Data Sheet. No additional claims have been made beyond what is stated in the TDS.
Note: All figures sourced from the Rocathaan HotSpray PA 260-FR Technical Data Sheet. System suitability depends on substrate condition, surface preparation and project requirements. Contact Forti Nova for technical review before specification.
Specifier Considerations
Guidance for surveyors, architects, facilities managers and main contractors specifying spray-applied polyurea roof waterproofing.
Project Suitability
HotSpray is developed for both new and existing roofs (TDS). System suitability on refurbishment projects depends on substrate condition, surface preparation and assessment. Contact Forti Nova for technical review before specification.
HotSpray is suitable for new-build commercial and residential developments. The TDS confirms compatibility with polyurethane spray foam and other substrates, subject to assessment and preparation.
Spray application forms a continuous membrane at penetrations, service entries, rooflights, parapet upstands and drainage details within the same application pass. System suitability at specific details should be confirmed through technical review.
HotSpray is suited to large flat roof areas where spray application provides seamless membrane coverage across the full extent. System suitability depends on substrate condition and project requirements.
Who Specifies HotSpray
Condition surveys, refurbishment specifications and waterproofing system appraisals for existing commercial roofs.
New build waterproofing specifications and roof system design for commercial and residential developments.
Reactive roof refurbishment and planned maintenance programmes for commercial building portfolios.
Commercial roofing packages for new build developments and large-scale refurbishment programmes.
Spray-applied polyurea roofing systems for commercial projects requiring specialist application equipment and training.
Approved Network
Approved Applicator Network
Forti Nova supports HotSpray projects through the Approved Applicator Programme. Contractors applying HotSpray receive technical support, system training and project guidance.
Surveyors, architects and main contractors can contact Forti Nova for technical specification support and, where required, introduction to approved HotSpray applicators appropriate for the project scope and location.
Technical Support
Specification guidance and project review from Forti Nova
Approved Contractors
Introduction to trained and assessed HotSpray applicators
Specification Support
Technical documentation and TDS data sheets
Project Reviews
Pre-application substrate assessment and project discussion
Your HotSpray Project Journey
From initial project review through to supply or approved applicator introduction.
Project Review
Review roof type, condition, area and project objectives
Technical Discussion
System suitability, substrate requirements and specification approach
System Assessment
Confirm HotSpray is the correct system for the project
Specification Support
Technical specification documentation and project data sheets
Supply or Applicator Introduction
Direct supply or introduction to an approved HotSpray applicator
HotSpray FAQs
Common questions about Rocathaan HotSpray spray-applied polyurea roofing.
Specify Rocathaan HotSpray
Technical support, specification guidance and approved applicator introduction for commercial polyurea roofing projects.
Call 01254 433987 • Mon–Fri 7:30am–4:30pm • Blackburn, BB1 3DL