On most projects, once they have started on site, a Roofing Field Technician will conduct an interim inspection of the work during the project and a final inspection prior to authorising the release of the guarantee.


A dedicated Roofing Field Technician who joins the project team and carries out inspections at agreed key stages of the project. Upon completion of the roofing system, the Field Technician will carry out a 34- point final inspection, ensuring that the work has been carried out in accordance with the specification and that it meets the necessary standards for guarantee.


With such an important role for the satisfactory completion of the project, experience is crucial, which is why all Roofing Field Technicians have a minimum of 5 years installation experience.

Together, our 9 strong nationwide team of Roofing Field Technicians form the Sika Roofing Applications Department, the team responsible for training Sarnafil Registered Contractors, inspecting ongoing work and carrying out final inspections for guarantee.

Our Field Technicians

Ian Muddiman - Head of Applications

Mark Hibberd - National Applications Manager

Steve Jasper - North England

Nick Spooner - Yorkshire & East

Kevin Harrower - North West England & North Wales

Phil Slatter - South Wales & The Midlands

Darren Raymond - East Anglia

Steve Hatcher - Home Counties & North London

Andy Smith - London & South East

Maurice Curtis - South West

Scott Grant - Scotland

Request a Field Technician Visit

If you require any further information on site inspections, please contact the Sika Sarnafil Applications Administrator on 01707 394444.