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Mr. Alan Williamson

Professional Description:

Roofing, Cladding and Building Envelope Consultant


B.S.c, C.Eng, M.I.C.E, M.I.Struct.E, F.I.O.R

Links House
109 Main Road
Area of work:

Greater London, Essex and Nationwide


AP Williamson Consultants Limited is a roofing, cladding and building envelope consultancy specialising in all aspects of roofing, cladding and the whole building envelope, including the design of various structural elements to support both roof and wall coverings.

The consultancy operates nationwide and services a wide range of clients, ranging from building owners to insurance companies and offers expert advice for problem solving in roofing, cladding and building envelope issues, these range from leak investigations, dilapidation schedules, condition surveys and project management including preparing tender documents and the supervision of works.

Mr Alan Williamson has experience of many types of construction including modular construction, student accommodation, airports, schools, commercial buildings, hotels, combined courts, industrial buildings, leisure centres and shopping centres in both refurbishment and new construct.

Alan Williamson covers all disciplines of roofing including;
Metal roofs – both built up systems and composite panel, slating, tiling, single ply membranes, built up felt, zinc and copper), cladding and curtain walling, condition surveys and reports.
Annual or bi-annual roof audits of current and planned roof stock.
Dilapidation surveys and reports for roofing (all disciplines), cladding & curtain walling.
PPM Schedules for shopping centre’s, industrial buildings, residential buildings
Producing tender documents for roofing (all disciplines), cladding systems and monitoring the quality of works as they progress acting as a contracts administrator.
Roofing (all disciplines), cladding and curtain walling design, utilising calculations and full CAD drawings.
Checking drawings / carrying out site supervisory roles as works commence on all types of new build & refurbishment roofing & cladding works.
Cladding and curtain walling failure reports.
Cladding and curtain walling leak investigation reports.
Wind load calculations.
Drainage calculations.




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