A Guide to the Repair of Historic Roofs - Dublin City Council

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ROOFS A GUIDE TO THE REPAIR OF HISTORIC ROOFSThis set of slates indicates a sequence of re-roofingprojects, over a period of centuries, on an earlyeighteenth-century country house. On the left, the smallgreenish, hand-dressed slates, held in place by pegsfixed into lime mortar, are thought to represent theoriginal roof covering. Clay tiles may have been used tocover the ridge; the fragment shown here (top left) wasfound in the attic space of the house. An extension tothe house in the 1800s appears to have been theimpetus for re-cladding the entire roof with a blue-greyslate in a gauged slate pattern, possibly Ahenny slate(second from left). This roof survived until the mid-1960s, when neglect over time had caused seriousdamage and undermined the roof covering. The roofwas then re-slated with an artificial fibre-cement tile or‘slate’, retaining one section of the 1800s blue-grey slateroof to the central valley. In recent times, the roof hasbeen fully re-clad using a high-quality natural Welshslate, seen on the right.This sequence highlights the number of times a historicroof may be altered or replaced over the lifetime of ahistoric building and how the materials and detailschange in the process. The original small hand-dressedslate would have provided a very different visual effectin terms of colour, texture and pattern from the recentlylaid machined and regularly sized Welsh slate41
ROOFS A GUIDE TO THE REPAIR OF HISTORIC ROOFSLegal protection of historic buildingsIt is important to establish at an early stage whether a building is protected bylegislation and what types of notifications, permissions and/or consents it may benecessary to obtain before undertaking any works. This section is intended asguidance only and is not a legal interpretation of the legislation referred tobelow.NATIONAL MONUMENTS ACTS 1930-2004A historic building may be protected under the National Monuments Acts in oneor more ways as follows:a) By reason of being a national monument in the ownership or guardianship ofthe Minister for the Environment, Heritage and Local Government or a localauthority or subject to a preservation order;b) As a monument entered in the Register of Historic Monuments;c) As a monument entered in the Record of Monuments and Places.In respect of monuments to which (a) applies, the written consent of the Ministerfor Environment, Heritage and Local Government is required for any structuralinterference or ground disturbance. In respect of monuments to which (b) and (c)apply, two months’ notice in writing must be given to the Minister of any proposedworks at or in relation to the monument. Breach of these requirements isan offence.The Record of Monuments and Places (RMP) is the most widely applying provisionof the National Monuments Acts. It comprises a list of recorded monumentsand accompanying maps on which such monuments are shown for each county.It can be consulted in county libraries and main local authority offices. TheNational Monuments Section of the Department of the Environment, Heritageand Local Government will advise on the protection applying to any particularmonument under the National Monuments Acts.42
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A Guide to the Repair of Historic Roofs - Dublin City Council

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