AE105 Blackstone house - roof replacement

Current status

1

Initial Planning

Deciding the scope of the works

2

Project design and approval

Finalising the project specification, budget and programme

3

Work starts: TBC

Work ends: TBC

4

Project details

Click on the block below for the detail of the planned work.

Work Element	Description of Works
Condition Survey	Pre-existing information regarding the condition of the building and associated ancillary areas has been provided in the IPCI in Appendix 1. The PD where appointed (or PC where no PD duty holder is in place) is to inform the Client, where additional survey or inspections are required to develop the PCI and inform the design process. The PC is required to complete a pre-commencement condition survey within all areas likely to be affected by the works, which shall contain written and photographic evidence of the existing conditions. The PC is to identify any areas of concern that may result in additional works being necessary, together with proposed remedial recommendations, within the scope of works. The condition survey is to be agreed with WCC/WCCs Client Representative and upon conclusion of the works the PC is to ensure the condition of any areas affected by the works are handed over to WCC/WCC in no worse a condition than at pre-commencement stage.
Access Required	Work at height will be required to complete. The PC is to ensure that all work at height activities are risk assessed and that the proposed method of access to facilitate the works is detailed in the CPP and fully costed in the PEP. Should there be any reason that specific access arrangements cannot be fully evaluated and costed for then the Service Provider should identify these together with a defined Provisional allowance within their PEP for each specific item/ area. Access will also be required into the residents’ properties to undertake a number of the works elements described.
Roof Works	Strip back to deck and renew roof covering in line with and in accordance with the Roof Report Survey in Appendix 2 and the performance specification located within Appendix 8. An insurance backed guarantee for at least 20-year duration is to be provided for the installation of the roof system. Provide a sign at roof level stating installation date, contractor name, length of guarantee, guarantee end date, and contact details for Westminster City Council if any future works are proposed to be carried out to the roof. Renewal works are to include all associated works to roof falls, alteration and creation of compliant upstands, roofing details and junctions, termination bars, flashings, outlets, grilles, and associated decoration. Include all main and secondary roofs and ancillary parapet walls and details. Using an approved contractor provide all associated works including all leadwork, new chases into brickwork, rendered and concrete upstands, counter-flashing, welted drip to external gutters, drip battens, promenade tile removal, parapet wall fixings, waterproofing works, new insulation, edge protection, temporary lifting and reinstatement of cables and services, etc. All cables and services are to be maintained throughout the project. Cables are to be fixed in cable runs and reinstated on completion of works. Repair localised areas of roof and make good all splits and defects to asphalt covering flat roofs and tank room roofs. Re-apply solar reflective paint to all mastic asphalt surfaces and renew pigeon spikes where missing/defective.
Tank Room	The service provider is to carry out the works in line with and in accordance with the Roof Report Survey in Appendix 2 and the performance specification located within Appendix 8. • Refurbishment of tank roofs • Raise door sills. • Renew steel doors and frames.
Lightning Protection	Ensure existing lightning protection is operational throughout the course of the works. Ensure the roof termination network, bonding and down conductors are complete at all times during the works. If any lighting protection systems are required to be lifted or rerouted as part of the installation of the new roof systems, all lightning protection system works to comply with BS EN 62305.
Rainwater Goods	Test and undertake repairs and full cleaning of rainwater goods including replacements of elements which are beyond repair. Test upon completion to ensure all rainwater goods systems are free of leaks and are discharging correctly.
Isolation of Services	Essential building services should be maintained during the duration of the contract where possible. Where services may not be functioning or operational for a period of time, the service provider should ensure prior notice is given to residents and WCC representatives.
Pipework, valves & Fittings associated with the tank works	Supply, install and connect all associated pipework, valves, fittings and overflow/ warning devices associated with water tank repairs. Provide valve charts and labelling associated with the works
Maintaining the Existing Building Services	Maintain the building services systems during the duration of the contract. Where services may not be functioning or operational for a period of time prior notice and resident notification shall take place. Service provider is to maintain the system fully (PPMs checks and remedials) under this scheme budget during the Defects Liability Period (DLP) and not via the term contracts PPM inclusive regime. It is essential that all newly installed or worked on services under this scheme are maintained through the scheme and the DLP.
Asbestos Management	A copy of the existing management survey and any R&D surveys have been supplied in the IPCI in Appendix 1. Live asbestos information can be found on the Westminster City Council asbestos portal, Shine. The PD/PC is required to inform the client regarding the need to instruct any further R&D surveys as the design develops and the areas where intrusive works will be required are confirmed. The R&D survey will be instructed by the client through the asbestos management system and provided to the PD/PC as part of the PCI, to allow the CPP to be developed. The Service Providers Project Execution Plan needs to identify any further works, with estimated costs, for completing removal or encapsulation of ACMs to enable The Works. The SP is to ensure that any subcontractor undertaking asbestos removal works as part of The Works, fulfils the client’s requirements outlined in the WCC process and procedure documents and are deemed competent to undertake the required works.
Other Potentially Hazardous Circumstances	In addition to Asbestos management there may be other potentially hazardous circumstances that the Service Provider will need to address. Other hazards that may be present or that need considering include but are not limited to: • Lead Paint • Dust • Ventilation of Solvents and Fumes • Noise • Other Hazardous Substances Undertake all surveys as necessary with approval from WCC to establish the existence of all potentially hazardous materials, substances and/ or environmental conditions. Procure and execute all works necessary to clear away any such hazards to the extent necessary in order to facilitate future surveys and execution of The Works. Provide recommendations for any additional measures that may be deemed necessary to prevent re-contamination.
H&S File & O&M Manual	Create/provide a new Health and Safety File and Operating & Maintenance manuals for the building and also for all systems associated with The Works. The file shall be in accordance with and as detailed within the Term Partnering Contract. This can include but is not limited to; • A detailed future Planned Preventative Maintenance (PPM) programme/ regime associated with The Works; • As-built drawings, specifications, schematics, schedules etc. • Manufacturers details, guarantees and warranties (as applicable) • Details of risks and hazardous materials not eliminated through design • Site Investigation Reports • Statutory authority consents and approvals
Other Works	The service provider is to carry out the works in line with and in accordance with the Roof Report Survey in Appendix 2 and the performance specification located within Appendix 8. • Replace existing pipe supports with freestanding supports. • Reposition/modify tank overflows. • Adjust/relocate some pipe work (liaise with WCC M&E team) • Lift & Move cables to facilitate waterproofing (liaise with WCC M&E team). • Extend soil vent pipes. • Modify existing Cat ladders.

Published: 3 August 2023

Last updated: 18 August 2023