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The Great Restoration

Stirling, Scotland is the home of Stirling Castle, a truly marvelous place that I love to visit, that sits atop a giant crag, or hill, overlooking the whole town of Stirling. There has been a castle on that hill since the 12th century at least, and maybe before, but the current buildings date from the 15th and 16th centuries.

When we think of medieval castles we usually picture a grand structure, with subdued, dark stone masonry. But when you gaze upon Stirling Castle today from the town below, you will notice that one of the buildings is different from the others. Since 1999, after a decade long restoration effort that altered the building inside and out, the Great Hall of Stirling Castle has been a bright, cheery yellow.

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[Artist rendering of the Great Hall with the yellow finish.]

But not everyone in Stirling is happy about that.

Most medieval castles were a collection of buildings, each with a specific purpose. A great hall is one of the key buildings in a castle. To quote Bill Bryson in his bookAt Home: “No room has fallen further in history than the hall. Now a place to wipe feet and hang hats, once it was the most important room in the house.” The Great Hall of Stirling was a huge gathering space where parliament would meet and set laws. They would also have lavish banquets and feasts in the hall. 

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[Stirling Castle map.]

The story of how the restoration of The Great Hall of Stirling Castle led to it being painted bright yellow illustrates the unexpected complexity in the art of restoration. It comes down to this question: when you choose to restore something, which moment in time are you restoring it to?

Historic Scotland is the government organization charged with educating the public and safeguarding Scotland’s historic treasures. When Historic Scotland took over guardianship of Stirling Castle in 1991, they found the Great Hall in an awful state.

From 1800 to 1964 the castle was controlled by the War Office and it became the home of the Argyll and Southerland Highlanders. And they didn’t treat the castle as a historic artifact to be preserved. The Great Hall was used as barrack accommodation. Turning the one big, fancy room into barracks meant adding floors, altering windows, replacing the ceiling…really changing everything. Once the military left, the place was gutted. And when Peter Buchanan’s team at Historic Scotland took over in 1991 the building was a shell. They were left with a huge question mark as to what they were going to do with it.

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 [The Argyll and Southerland Highlanders occupied the castle in the 20th century.]

The typical mandate of Historic Scotland is to preserve historic places in the state they were found, but The Great Hall of Stirling Castle required some drastic measures. The question was: to which period should it be restored? Should they preference the military period from 1800-1964 or the medieval and renaissance period? Strategically the castle has been important for hundreds of years. Castle Hill in Stirling overlooked bogs on one side, and the bridge over the River Forth on the other, so for hundreds of years it was the place that controlled trade for the whole region. And it was seen that the cultural significance of the period from 1600-1800 outweighed the significance of the military period.

But choosing to restore the castle to a state 300-400 years in the past is not that simple. First of all, the records aren’t all consistent. The restoration team had a series of etchings of the Great Hall spanning from about 1600 to the late 1800s and they show the building from various angles. Unfortunately, they all show slightly different things. The etchings show different numbers of chimneys and different heights of chimneys. Traditionally the Hall had ridge beasts, heraldic statues of unicorns and lions that sit on the apex of the roof. All of the etchings show these, but they show different numbers of them. So the etchings give an idea of what the castle might have looked like, but as a tool for restoration, they weren’t much use.

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[Historic etchings had conflicting details about the chimneys and ridge beasts on the Hall.]

To help figure out where the ridge beasts should be placed on top of the building, they had to figure out the original structure of the roof. Sometime in the 20th century the roof had been completely replaced by the military, but the original hall had a glorious hammer beam roof. A hammer beam roof is a medieval technique that uses wood beams as a network of cantilevers and trusses on the inside to make the roof strong over such a big, wide open room. You can see all the timber when you look up from inside the hall. It’s stunning. It’s a jigsaw puzzle of beautiful triangles that are amazing to behold. Because the stone ridge beasts weighed ¾ of a ton, they could only be placed where the hammer beam roof was strongest. This is as true now as it was 300 years ago.

So the team had a hammer beam roof to construct, but they had no hammer beam roof left. They needed clues in order to get it right.

They found one diagram, a cross section of the hammer beam roof of the Great Hall from 1719, but since there’s only one record, it’s hard to know if it’s completely accurate. Since there was no other information about what the roof looked like, they began researching the surveyors from 1719 who drew the diagram, and found that other diagrams they drew of other castles were very accurate.

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 [Survey from 1719 showing a cross section of the hammer beam roof.]

Historic Scotland decided to trust the survey from 1719 and rebuild the roof based on that.

Using the one historic document, they built the roof, which determined where the heavy, stone ridge beasts were placed on top. One discovery begat another, and another, and the historic building came into focus.

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 [The completed hammer beam roof as seen from inside the Great Hall.]

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[The south elevation of the Great Hall before the restoration and after.]

The hammer beam roof was completed in 1999. Everyone who sees it, including the Stirlingfolk, seem to agree, it really looks great. So far, no controversy.

It was when they decided to also restore the lime wash finish to the Great Hall that local people began to express their objection.

When Historic Scotland took over the castle, it was completely grey stone. But throughout the castle, in corners and covered sections, they discovered bits of the original lime wash. Lime wash is pure lime (calcium oxide) and it also contains earth-based pigments. It’s a coating that’s meant to protect the stone masonry. In the case of Stirling, they found a significant yellow ochre layer of lime wash. The yellow was very intentional at the time.  Hundreds of years ago, the built world was basically grey and brown, but on this giant hill, there was a great yellow piece of ostentatious bling that signaled for miles that this was a place for a king.

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[Panels showing samples of the original lime washes.]

“We did huge sample panels of the lime washes all around the building to show people what it might have looked like,” says Peter Buchanan. “And we brought a lot of people from the Stirling area to see this as well. Because what we were intending to do, based on the analysis and the information that we had, was to put the finishes back.”

When Peter’s team was putting on the yellow finish, the Great Hall was completely covered in scaffolding and plastic. This may have contributed to the intensity of the reaction from the locals once it was unveiled. It was a sudden and shocking change to a historic monument that the people of Stirling had seen every day of their lives.

As a tourist, though, visiting the Great Hall is quite thrilling. Its brightness brings the building to life, and makes us reinterpret our muted, and ultimately wrong, image of the past.

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All images courtesy of Historic Scotland. Crown Copyright Historic Scotland.

Special thanks to Peter Buchanan and Barbara Clark for speaking to me about this story. Please forgive me, Ms. Clark, but I like the yellow.

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