RATHMINES I - CONSERVATION WORKS
DATA AND CREDITS
CLIENT - PRIVATE
LOCATION - DUBLIN 6
BUILDING - PRIVATE RESIDENCE
CIVIL / STRUCTURAL ENGINEER: DENIS KELLY CONSULTING ENGINEER
MAIN CONTRACTOR: AMAZON DEVELOPMENTS
UNDERTAKEN IN CONJUNCTION WITH BUILT HERITAGE INVESTMENT SCHEME 2016 / DUBLIN CITY COUNCIL
Works are due to commence on a re-roofing project to a protected structure in Dublin 6. The existing roof is an M-profile roof; the south end is hipped and two no. chimney stacks are shared with the neighbouring property. The property has suffered in recent times from water ingress in the existing asbestos slate roof.
Internally, roof timbers appear to be quite slender and would be considered to be undersized for their purpose (averaging 85mm x 20mm / 90mm x 30mm at c. 300mm centres). There is also evidence of dampness ingress, and considerable deflection is evident in the ridge and hip rafters. It is proposed that historic structural timbers are to be retained in situ, and new rafters will be sistered to the existing. This way, the majority of historic fabric will be retained in situ, with the main roof support now provided by new treated rafters.
It is proposed to remove and safely dispose of the asbestos slates, salvage the existing ridge tiles, and reinstate Penryn Blue Bangor slates throughout, fixed with copper nails. Works will also be carried out to renew the copper valleys as required, renew the chimney soakers and flashers, and also rebed the existing salvaged clay ridge tiles upon completion.
The project has received grant funding, following a successful grant application under the Built Heritage Investment Scheme 2016. Best practice conservation techniques are being employed, with close liaison with DCC Conservation Grant inspectors, and works are due for completion c. July 2016.