Completing an apprenticeship at a young age has allowed Gary to learn the roofing trade from the ground up.


This knowledge and experience gave Gary the confidence to start his own business.


Based in the heart of Middlesbrough, Gary Harrison Roofing prides itself on the ability to complete any job no matter how big or small.

Now with over 37+ years experience in the industry, you can be assured that with every job, Gary Harrison Roofing provides consistent and exceptional results, guaranteed to exceed your expectations.

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Roof assured Installer 2016

(Awarded by Sarnafil & Sika)

Which? Local Business Of The Year 2012

(North east)

Which? Local Business Of The Year 2013

(North east)

Roof slating, tiling & cement work certificate

(Awarded by City & Guilds of London Institute)

Trained to install FDT Rhenofol

(Awarded by SIG Design & Technology)

Trained to install IKO Armourplan

(Awarded by SIG Design & Technology)

Trained in basic Bossing & Welding

(Awarded by Lead Sheet Association)

Accredited contractor

(Awarded by SIG Design & Technology)

Slating & Tiling Apprenticeship

(Awarded by National Joint Council for the Building Industry)


Piece of mind, quality and reliability are all words you want to hear when purchasing a service and product. With Roof Assured by Sarnafil, that's exactly what you are getting.

Becoming a roof assured installer means that Gary had to undergo a rigorous training program at Sarnafil's training and assessment centre in London.


This means that Gary is now part of a national network of 'registered installers'. Once your roof has been completed it's signed off and given a guarantee, ensuring it's of the highest standards.