Commercial roof refurbishment
A seamless renovation membrane considered for suitable existing roof build-ups after survey, preparation and detail design.
Prokol · specialist spray technology
HotSpray polyurea roofing.
Highly reactive, solvent-free aromatic pure polyurea for seamless roof waterproofing—specified for the substrate, build-up and operating conditions rather than sold as a universal coating.
The essential distinction
HotSpray is not SprayGrade. Different chemistry. Different equipment. Different project fit.
Assess project suitabilityTechnology before marketing
Fast reaction. Seamless protection. Controlled specification.
Prokol describes Rocathaan Hotspray PA 260-FR as a highly reactive, solvent-free hotspray coating based on aromatic pure polyurea, developed as seamless waterproofing for old and new roofs and polyurethane foam.
That capability does not remove the fundamentals: substrate strength, moisture, preparation, primers, details, wind, access and quality records still decide whether the finished system succeeds.
Where it can fit
When HotSpray is suitable.
Every application remains conditional on survey, compatibility and the confirmed system build-up.
New and existing roofs
Rocathaan Hotspray PA 260-FR is manufacturer-described for seamless waterproofing of old and new roofs.
Insulation build-ups
The manufacturer lists polyurethane foam, XPS and PIR among suitable applications, subject to the tested and specified build-up.
Complex geometry
Rapid spray application follows changes in form and can create a continuous membrane across suitable prepared details.
What must be confirmed before application.
01
Roof and substrate condition
02
Moisture and adhesion
03
Preparation and primer route
04
Detail design and interfaces
05
Weather and overspray control
06
Specified thickness and application records
07
Tested external-fire build-up where required
08
Inspection and project warranty route
HotSpray in application
Specialist spray equipment and controlled application.
These photographs show the application method, masking, complex geometry and completed membrane. They are not presented as named case studies or location claims.
Clear answers
HotSpray polyurea questions
Chemistry, suitability, fire classification and project delivery
Commercial project assessment