The following three quotes result from a survey of the roof, carried out by Spider Tech Ltd on 11th July 2012.
The quotes are in Portable Document Format (PDF). To view them, you will require a PDF reader such as Adobe Reader. If you do not already have this installed, you can get it from http://www.adobe.com/go/gffooter_adobe_reader.
To view the quotes in your browser, click on one of the links below. To download a quote for offline viewing, right-click on the link and choose the command Save linked content as… (or similar) from the menu that appears: