Junior House, Belvedere College S.J., Denmark Street Great, Dublin 1, D01 TK25
EXPP: PROTECTED STRUCTURE: Junior House Roof: The existing flat bitumen roof on Junior House is beginning to show evidence of failure. Survey information show that the existing surface is almost flat resulting in large areas of ponding on wet days, with water not draining properly for long periods (Image 3). The waterproofing currently requires regular maintenance with silt build-ups near outlets requiring clearance. As the existing bitumen has no roof covering or protective finish above, it is fully exposed to the sun allowing it to become brittle and in need of repair. Around the perimeter there is evidence of cracking and flashing failure against the parapets. Local repairs have been carried out over the years in these areas and along the roof seams. (Image 17). Despite preventive measures to address issues, it is clear that the roof urgently needs replaced to prevent further water ingress or structural damage. The existing insulation and waterproofing layer above the structural slab is ~35mm total, providing minimal U values. Replacing the roof provides the opportunity for upgrading insulation levels to meet current building regulation requirements. Existing rooflights above the stair core and circulation are single glazed units providing minimal thermal performance and requiring dedicated guarding in case of fall impact. Replacing rooflights and upstands with proprietary insulated upstands and double glazed units is therefore also required. Internal: The main purpose of the proposed works is to improve the quality of the existing Classrooms, Offices and Circulation areas. Existing fabric across Junior House has been upgraded in an ad-hoc manner over time, and are now showing signs of wear and tear. There are signs of warping, discolouring and staining of ceiling panels. The works will consist of refurbishment and restoration of internal fixtures, fittings and finishes where indicated in the drawings. Belvedere College would like to increase the accessibility within Junior House, as it is the only building on campus without Lift access. It is proposed to install a new platform lift as part of the works, within an existing staircase void area. Within the Staircore1 the existing fall arrest cage must be removed in preparation for instillation of the new lift enclosure from basement to level 03.