Project Summary

Client:   Cardiff City Council.
Main Contractor:   ISG Pearce Ltd.
Project:   Cathays Library regeneration.
Scope of Works:   Roof renewal with Vermont Green natural Canadian slates.
Roof Area:   540m2 of slating and 175m2 of single ply gutters and flat roofs.
Contract Value:   £85,000.
Roof completed:   December 2010.


This Grade 2 listed building, which first opened in 1907, was actually earmarked for closure before a £1 million renovation package was
put together and completed in 2010.

Built in 1906, this Carnegie building (i.e. one of over 2,500 libraries built worldwide with money donated by Scottish-American
philanthropist Andrew Carnegie) had fallen into significant disrepair as it suffered with damp and dry rot. The West wing had even been
closed to the public due to damage resulting from an arson attack.

The original slate roof was also in a poor condition, the result of the slates reaching the end of their lifespan as well as numerous
poorly executed repairs to keep the building watertight. Fortunately, the refurbishment included the total renewal of all slate areas (540m2),
flat roofs and parapet gutters (175m2).

It was decided that the existing roof was of a green slate, probably from one of the old Preseli quarries. Vermont Green slates were
therefore suggested as the best colour match - these slates are actually from the same Ordovician period so the general quality and
attributes are also very similar.

             

The slate roofs consisted of the East and West wing "up-and-over" roofs linked by the central core with faceted elevations, joined by
close-mitred hips and open lead valleys. The central spire, a major feature of the building, was also included in that the vertical slate
hanging was replaced, again with close-mitred external angles.

The flat roofs and parapet gutters (finished with a single ply membrane) and the rainwater goods (all renewed with cast aluminium) were
also added to our package meaning we were able to offer a multi-discipline service and ease the burden on the main contractor.

We concluded the work with a final account value in excess of £85,000.

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