Thermal upgrade to flat roof of residential block in Havant
David Samuel Asset Management Ltd
Rapleys were instructed to explore options to thermally upgrade a flat roof to a residential block in Havant that also offered a new waterproofing guarantee.
Rapleys undertook an initial roof condition survey as well as considering the site’s location and general restrictions to factor how the project would be completed safely.
This inspection, along with gathering data from the client, helped Rapleys prepare their pre-construction information pack which is required for their Principal Designer role under the CDM Regulations 2015. This document was issued to the contractor at tender stage so they could assess the resources they would need allocated to perform their duties under the regulations.
Rapleys had to consider what roof and insulation products were best suited for this site. Timescales and budget costs were provided for their consideration.
Rapleys consulted with a specialist roofing manufacturer to provide a full specification for a new bitumen felt sheet covering, as well as a new rigid insulation board that would exceed the U-value requirement under the Building Regulations. This formed part of the overall specification document that went out to a competitive tender, where the successful contractor completed the works to a high standard with no delays to the programme.
The client received the 20-year insurance backed guarantee from the roofing manufacturer. Rapleys provided the client with a Health and Safety File and Operations and Maintenance Manual.
The challenges on this project were providing the correct welfare for the contractor and also ensuring there was sufficient edge protection to the flat roof as the parapet was not high enough. A welfare van was provided in a parking bay, and temporary scaffolding was created to provide edge protection throughout the duration of the project.
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