case study - higham roofing ltd. porter building... · the existing mosaic facades received new...

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Case Study Installation of Reinforced Bituminous Roofing Specification Waterproofing

and Associated works 2014

George Porter Building, University of Leicester, Leicester

Project: George Porter Building Complete Re-roofing

Contract carried out by: Higham Roofing Limited

Point of contact: Joseph Monaghan BSc (Hons) AIoR

Contact email: [email protected]

Completion date: August/September 2014

System manufacturer: Esha Reinforced Bitumen Flat Roofing Specification

mailto:[email protected]

http://www.highamroofing.co.uk

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Higham Roofing were awarded the role of Principal Contractor and have successfully

refurbished the roof areas of the George Porter Building of the University of Leicester

home to the Chemistry Department of the University of Leicester specified by Esha

Reinforced Bitumen Membranes. The works incorporated a FOC 20 year insurance

backed warranty.

Original roof condition

The George Porter Building houses laboratories, lecture theatres, computer rooms,

study rooms and department staff offices. Due to the purpose of this building,

numerous roof mounted plant and equipment have been positioned to the vast majority

of the roof area. These included fume cupboard extracts providing the potential for the

release of hazardous gases, air handling equipment and air conditioning equipment. All

works had to be managed through daily meetings and permit systems for the

programming of vital fume cupboard shutdowns, alterations and exclusions when in use

along with all remaining roof mounted plant and equipment affecting the internal areas.







The roof field areas before refurbishment







Methology and Constraints

Higham Roofing were instructed to remove the chippings, defective asphalt coverings

and cork insulation as defined by the moisture mapping survey from the existing roof are-

as. This was followed by the installation of torch-receivable insulation to make the roof

surfaces uniform, and the installation of two layer Esha Radmat bituminous specification

waterproofing. Pitch Pocket frames and resin were installed to all details and penetrations

where unsuitable for waterproofing.

Special arrangements were made in order to disconnect and degas the air conditioning

units whilst works were carried out in a close proximity and on completion of works all

the Air Conditioning units were re-commissioned. Our team removed all the existing

timber cladding of the tank house, carried out a structural re-strengthening and

Tyvek along with brining all timber on the tank house equally levelled.

After this, the tank house received a Marley Cedral Weatherboarding System to form a

nice finish over a Tyvek Fire Cub.







The complex works schedule then incorporated the following steps.

Firstly, the installation of Gilberts thermostat controlled louver and passive systems,

the replacement of Georgian glazing sections, the removal of redundant rooflights and

structural re-strengthening.

Internal concrete and rebar repair works incorporating Sika 1, mortar and plaster.

Then the laboratory, computer room and classroom was re-plastered and thoroughly

re-decorated.

The existing mosaic facades received new Helifix resin bonded render pins.

Higham Roofing installed a new emergency lighting scheme along with fire alarm

sounders.

The final works included the adaption to the internal BMS cabling and cabling trays and

the installation of new fire doors, fire signage and a red mineral highlighted

walkway.

The quality of workmanship and attention to detail received from Higham Roofing won us

a 2nd phase of roof refurbishment works at the University of Leicester in Autumn 2014.

Higham Roofing offer a full free of charge service to visit site, compile roof survey

reports and subsequent specifications and U value calculations etc. if so needed.

Please do not hesitate to contact Higham Roofing on 01933 317202 or by

emailing [email protected] to discuss any requirements or projects.







Before and after photographs of various roof areas







Completed Roof Areas


