About GDH Consulting

GDH Consulting was incorporated in 2017 to offer specialist advice on building envelopes, in particular metal roofing and cladding.

We have over 30 years of experience across a diverse range of expertise which enables us to cover both technical and commercial aspects of the industry.

With offices in Essex and The West Midlands, we work throughout the UK & Ireland and across Europe for a number of key clients. Our work has taken us to Spain, Italy, France, Germany, Holland, Czech Republic, Slovakia, Poland and Romania to date.

We work directly for Landlords, Tenants, Developers, Main Contractors, Project Managers, Manufacturers and Roofing and Cladding Contractors.


We are members of the MCRMA (Metal Roofing and Cladding Manufacturers Association) and are recognised by them as Independent Inspectors.


Gavin Harriman
Managing Director

Gavin has been in the roofing and cladding industry for over 23 years, succeeding in a number of roles including Estimating, Design and Contract Management. He has held senior positions at some major roofing and cladding contractors which led to him establishing GDH Consulting in 2017. He is a Member of the Institute of Roofing (MIoR).

Adam Smith
Roofing & Cladding Inspector

Adam joined GDH in January 2019. He has key site experience having started in the industry as a labourer, working his way up to running his own gang. Adam then progressed into Site Management for a major cladding contractor, developing his knowledge further. A keen rugby player, Adam is a prop for Burton Rugby Club and is a father of 2.