Opposite is a picture of the finished Parapet. The Parapet had to be recorded in minute detail then taken down completely to the string course level, when it was releaded, then built back exactly as it was using as much of the original stone as possible. The Merlons and Embrasures used beer stone for the copings so alot of pinning and repairing was involved to save as much of this as possible. For stones that were beyond repair Rougemont Creme was used as a replacement. The whole thing was rebuilt with lime putty and the lower wall section, before the Embrasures, is tied into the main core of the building with dowels at 500mm intervals along the length of the walls. The first 3 photos in the slideshow shows the Parapet nearly rebuilt.
I made a section template to the original copings and a cutting list, the stone was worked on site and per the architects' instruction to save as much beer stone as possible. You can see in the 4th photo of the slideshow two new large indents to preserve the remains of a beer stone coping, which had been weathered away and split horizontally. On the wall in the background you can see new stone, the blue ones, which were sourced from a local quarry about 5 miles away. The stone was cut and dressed to replace any walling stone that was beyond repair.
The 5th pic in the the slideshow shows a newly fixed Rougemont Creme coping. You can see in the photograph the lime putty bedding mix and the final pointing mix. The lime putty was left back 40mm to allow a good depth for the final pointing mix, which was a hydraulic lime (3.5), mixed with sand and stone dust.
Copyright, all rights reserved 2014
Click this pic to Enlarge
Click pics for Slideshow