Spot checks!

One of the most important things we do at Knole is keeping an eye on the environmental conditions in the Showrooms. We do this through a combination of ways. Our primary method is using individual monitoring sensors in each room that send a regular signal back to the office detailing the Relative Humidity (RH) and temperature in each space. By this method we can keep an up to the minute record of what’s going on.

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Our regular ‘Hanwell’ environmental monitors. This one is in a storage space and is showing an RH reading of 58%, right where we want it.

However, because of our current project and the work going on to improve the lighting, conservation heating and all sorts of other things it means that we don’t have proper radio monitors in some rooms right now.

 

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RH in some rooms sometimes reaches worryingly high levels. It’s essential to keep a good watch on what’s happening.

 

This means that our secondary method become more important and we have to do it more regularly. This method is using spot checks. Usually we go into each space in the showrooms and store rooms every two weeks to take temp, RH, lux and UV readings to make sure that our automatic monitoring is consistent with our handheld sensor.

While the sensors are gone in the second half of the house we send the intrepid Zena in with a hard hat and a monitor to take readings every week. This way we know what kind of conditions the historic showrooms are facing on a day to day basis in all weathers.

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Zena taking readings in the Ballroom

Which is Witch?

Here at Knole we are blessed with many fantastic volunteers. Our volunteers contribute in all sorts of ways; whether it be Room Guiding, helping the conservation team, admin or mucking in with our Premises team, they’re always here to help.

One of the more little known contributions of volunteers at Knole is in the field of poetry! There is a strong literary tradition at Knole with Thomas Sackville, 1st Earl of Dorset and man most responsible for Knole as you see it today, being a respected poet in his day. From Thomas in the 17th century right down the generations to the 20th century. Vita Sackville-West was a successful writer and poet and her cousin Eddy a novelist and music critic.

Today some of our volunteers take up the mantle of poet with Clare Fallows, a 42 year veteran of Knole producing several wonderful poems about the place.

Clare has been a stalwart here at Knole and has recently written a fantastic poem about the witch marks we are continuing to uncover here at Knole. She has kindly allowed us to share it with you here. I hope you enjoy it as much as I have!

 

Which is Witch?

Now down at old Knole there are witch marks galore

And each day, it seems, we are finding yet more,

But are these strange symbols what they seem to be?

Let’s look into the past and perhaps we shall see.

 

It’s 1605 and the whole house is humming;

With numerous labourers going and coming

The great Thomas Sackville to please is their task

So they must obey him, whate’re he should ask.

 

He fervently hopes that King James shall one day

In this beautified dwelling be willing to stay,

But all must be flawless, the peak of perfection,

And naught left to chance for the monarch’s protection.

 

For at night could come witches with evil intent

With spells and with curses on wickedness bent.

So Sackville’s commanded that marks must be made

Convinced that these signs will such beings dissuade.

 

His men will comply, for they’re filled with alarm

And dread a dire fate should the king come to harm.

Thus on panels and doorways the witch marks they leave

So the house will be fit a royal guest to receive.

 

But among them’s a rebel; Luke’s known for his jokes

And he has devised an impertinent hoax.

He scoffs at these witch marks, at sorcery jeers

Deriding his workmates, dismissing their fears.

 

So when evening comes and the labour must cease

Luke lingers awhile and when all is at peace

He takes up his tools, finds a chisel and blade

And in no time at all, many “witch marks” he’s made!

 

There are scratches and circles and lines to be seen

But Luke alone knows what those characters mean.

His sweetheart and sisters’ initials are there,

The circles their faces, the grooves for their hair.

 

His friends see the work and are somewhat impressed.

They’ve seen many witch marks and these are the best.

About their creator there’s much speculation

But Luke remains silent and hides his elation.

 

He’s proud and he’s gleeful, of that there’s no doubt,

Yet anxious as well, lest his mischief’s found out.

He’s beginning to dread that the men are suspicious

When Sackville arrives at a moment propitious!

And seeing the symbols, he’s happy and thrilled

That his wishes have all been so ably fulfilled.

 

I am sure that Luke’s work is at Knole to this day

But which marks are witch marks? Can anyone say?

Clare Fallows, May 2016

 

This is such an inspiring reaction to archaeology and our ongoing conservation project it’s just one of the many reasons we’re so lucky to have our volunteers.

To hear Clare talk about her four decades of service here at Knole click here:

http://www.knolestories.org.uk/content/working-at-knole/volunteers/clare-fallows

 

To find our more about witch marks and medieval graffiti have a look at these links below:

http://www.medieval-graffiti-kent.co.uk/

http://www.knolestories.org.uk/content/working-at-knole/ibk/nathalie-cohen

 

Oh the humidity!

One of the most important elements of conservation is making sure that our collection has the best possible environment to live in. In a house like Knole this is very difficult. It’s a large building with no heating or other environmental control. This means that the house can be at the mercy of the elements. Humidity and temperature rise and fall with the weather with no way for us to control it.

photoCondensation in the Second Painted Stair caused by high humidity (RH)

As part of the conservation project at Knole we will be having special conservation heating installed in the showrooms here. Sadly for our visitors and volunteers this does not necessarily mean that the house will be toasty and warm in winter! The heating will purely be there to control the RH (Relative Humidity) of the rooms. Relative humidity is one of the biggest problems we face here at Knole. When it is too high it causes condensation to build up on vulnerable surfaces, attracts dust and makes a perfect home for mould. It can also create perfect conditions for all sorts of pests such as woodworm and deathwatch beetle. When it is too low it can cause some materials to contract and crack, veneers to lift and glues to fail.

Because of the importance of RH and temperature we have to keep a very careful eye on conditions in the showrooms. If there are particular anomalies such as high RH where it is usually lower we can investigate what has happened. Perhaps there is a leak or a heater has failed. Although we don’t yet have control over the showroom temp/RH we have been able to have some control in some behind the scenes areas at Knole. We have special humidistats in special stores that will react to the Rh in a room and turn on heaters when necessary.

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 Humidistat in the storerooms.

The primary method we use to monitor RH is our Hanwell environmental monitoring system. If you visit Knole you may see the sensors dotted around the galleries.

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Here you can see the Painting Store monitor. It has an LCD display showing you the RH and temperature at the time.

 

Each room has a box and each box is equipped with a transmitter that relays the information it’s gathering to a computer in the office. This then plots a graph that allows us to see trends and patterns in individual spaces.

Within the National Trust we try to aim for an RH level of 40-60%. This represents the amount of water vapour present in air as a percentage of the amount needed for saturation at the same temperature. Because National Trust collections are often so varied and in historic settings there is no perfect RH that is ideal for all materials but this range gives us the best chance.

To make sure we have the most accurate readings possible we also take spot readings on a regular basis. This involves taking a handheld RH/temp monitor into each space and taking an extra reading. This is a good way to make sure we are obtaining accurate information. This is also our primary method of keeping an eye on RH/temp in the part of the house currently undergoing conservation work ready to be opened again next year.

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Here is Zena taking environmental readings in the Ballroom during the conservation work.

Knole suffers with frequent high RH which will be addressed when we have our new conservation heating. Until then we do what we can!

 

Exposing the Ballroom

As work progresses in the closed half of the house we get some of our first exciting glimpses behind the paneling. The early 17th century panels can be seen here being carefully taken down revealing the bare stone walls. This is all part of our Heritage Lottery funded conservation project to install fire protection, insulation, new lighting and electrical supply to the showrooms.

Fantastic opportunity to see things we’d never normally experience!

 

Here’s the Ballroom in it’s previous configuration still clad with its lovely seventeenth century paneling.

The Ballroom at Knole, Sevenoaks, Kent

The Ballroom at Knole. The great chimneypiece & overmantel rise the whole height of the room & rank among the finest works of Renaissance sculpture in England.