Oxford Method Research Programme

It is our view that any of the mentioned options are perfectly feasible and can be installed with minimal affect to the existing occupants and surrounding buildings. The building will need to be scaffolded for the duration of the works for both the over-cladding and installation of new windows. Our specific comments on the systems are as follows:

• All four options propose that the existing PVC coated cladding panels are retained. This approach should be less disruptive to the users and minimise the extent of internal decorations.
• The use of either cavity wall insulation, architectural panel or structural cladding (and new windows) will improve the thermal performance of the building.
• The Structherm structural cladding system will require periodic repainting approximately every 10 to 15 years.
• The Kingspan Optimo panels do not require any maintenance other than a periodic cleaning using a jet wash, of approximately 10 to 15 years.
• A render finish as specified in option 2 and 4 will not be in keeping with the recently refurbished ophthalmic unit.
• Structherm Ltd can provide a wide range of rendered finishes to satisfy the Client’s aesthetic requirements. Both render finishes are rated Class 0, compliant to Building Regulation approved document B.
• Kingspan can provide a wide range of finishes and colours to complement the existing cladding panels used on the adjacent buildings.
• Some areas of Unit 69 have already been over-clad in an architectural panel similar to Kingspan. To continue over cladding the remainder of the building in Kingspan would complement this work.
• The Kingspan Panels and steelwork could be transported into the courtyard areas of the building by hand and would cause relatively little disruption to the Hospital.
• The Structherm structural rendered panel would require the use of ‘wet trades’ which could cause some disruption and unacceptable mess.
• BBA certificate for the structural cladding suggests the Structherm system should remain effective for at least 30 years with a low level of maintenance.

This feasibility study does not consider the over-cladding of the plant tower due to potential access difficulties. However, if the structural frame to the tower replicated that of a 2M or 3M OM building, the use of structural cladding could be a viable solution. The overall building height and increased wind pressures may require the overall panel thickness to be 100mm.

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