Magnificent with a capital ‘M’

Gusting wind, horizontal rain, pigeons and cold are some of the unpleasant things about working on top of the Folly at Wimpole.  However, the project does have many benefits and one of them is the amazing view which you get of the Cambridgeshire countryside.

The conservation works continue and we have talked about the Crenulations which will adorn the tower in previous blogs – but it is now happening.  The top is prepared and we are about to see the first pieces of new stone inserted which will provide a fitting cap to the tower.

With the aid of modern technology you can now see exactly where our conservators are working and the Magnificent views across the park but watch out you need a head for heights, even whilst sitting in your arm chair. Open the link and scroll around for a 360 of the estate

Chisels, callipers and files

Paul Coleman, Project Manager, gives us a quick update on the latest news at the Folly.

1 Brickwork removed at roof top

Brickwork removed from the top edges of the tower

Well if you’ve read our blog post about the Crenulations, Merlons and Machicolations (the bits which sit on top of the Gothic Folly top) the exciting news is the stone has arrived on site and our stone masons have started to mark out and shape the pieces which will sit on top of the tower.

2 Stone being prepared

Stone being prepared

3 Stone shape of the tower curve

Stone shaped to the curve of the tower

We are using Chilmark stone for those bits at the very top which will be prone to weather damage and which will take the full brunt of the rain.  Chilmark is very similar to clunch in appearance but is more durable and harder, so the top is last many years into the future.

4 String coarse carved

Carved string coarse

Works to remove the existing brick top inserted in the early 1900s and reinstate with stonework is costing circa £51,000, excluding the cost of the scaffold.

5 example of the tools

The tools of the trade

Some of the tools being used are a claw chisel, nylon large mallet, and an array of differing sized cold chisels, steel Vernier calliper for stone setting out, rough files for stone profiling, and drags (a comb like tool that makes the surface smooth and flat)

Out with the old, in with the new

The Arrow Slits

This week, Cliveden Conservation Conservator, Andrea Walker, talks us through the restoration of the arrow slits on the Folly Project.

An Arrow slit - before

Arrow slits, also referred to as loopholes, arrow loops or bow loops, are the narrow vertical windows from which castle defenders would have launched arrows from a sheltered position.

In a functioning castle, arrow slits were built to accommodate archers who launched arrows using the short bow, the crossbow and the longbow. In the Gothic Tower, they were built decorative elements.

Window cill - Damage by brids

Window tracery - Damage by brids Damage caused to the window by birds

Their shape, and location on the face of a tower that receives the brunt of the weather, made them vulnerable to the elements and to the clawing feet of birds seeking a place to rest.

Arrow slit - the original bottom half badly damaged

An arrow slit showing the original bottom half now badly worn and the later restoration with Portland stone.

Most of original clunch stones that made up the arrow slits was removed and replaced with a denser stone called Portland limestone. Because the replacements were put in as square units and didn’t age in the same way the surrounding clunch did, they stood out and detracted from the intended look of the tower.






The stone from the arrow slits, removed

The stone from the arrow slits, removed.

A replacement Arrow slit, dismantled

One of the Portland Stone arrow slits, once removed.

In order to replace them, we’ve now cut all of them out and made sure we cut back to what would have been the original joint lines of the stones used to form the arrow slits: a “T” shape, rather than a square unit.

An Arrow slit - WIP - cut to _T_ joint lines

An arrow slit in situ with the T cut joint lines ready for the new stone

New clunch has been ordered and, once it’s in the hands of our masons, it will be cut to shape and given a radius (after all it is a round tower), before being fixed in position.

Weeding taken to a new level…

This week, Paul Coleman, Project Manager, discusses going to great heights with the secateurs and trowel.

4 Scaffold access to all walls

Scaffold access to the walls

Rain and sun brings with it weeds which every gardener has to deal with to keep their patch in good order, if left untended they become rampant and cause a real problem.

However, it is not just in the garden that weeds and plant growth cause a huge issue.  Well at the Gothic Folly works are well underway, the focus for the last 17 weeks has been repairing the soft stone walls and removing the plant growth which has taken hold on the walls.

The problem being the weeds are in the majority of the case on the wall tops and in areas over 15 metres up,  so not just a normal weeding job.  With scaffold in place, it gives the chance for our conservators and architect to inspect in detail every inch of the structure to identify problems and put in place the correct conservation repair which will see the walls safe for our next generation to enjoy.

5 Lofty heights of the scaffold

It’s a long way up

So what is the problem,  a few small plants spring up here and there,  no such thing the plants have taken a strong hold. Their roots drilling in to the core of the wall, breaking through the surface of the stone, opening up more cracks and letting in more water which rapidly loosens more stone and makes it unstable.  Plants continue growing and as they do, so do their roots – increasing in size they expand in the centre of the wall forcing the stones apart with huge strength.

12 Weeds and Brambles take hold

Weeds and brambles take hold

So whilst they have for a number of years been growing happily and have added a green carpet to the top of the walls, this has caused the majority of the structural problems which we are now having to deal with.

It is a slow process of carefully trimming back the greenery, to a point where the conservators can see the tops of the walls and then a process of removing carefully the stones to dig out the weeds (and in some cases trees !) and roots which run into the heart of the wall to eradicate all signs of the roots.

13 deweeding

Concrete, soil and weeds on top of the wall

At this point they can then determine the damage which has been caused and slowly piece back stones and brickwork to provide a waterproof top to the walls.  This is where an artistic eye also comes into play,  whilst many buildings we repair in the Trust are done to resemble (normally) straight line in brickwork or stone, on say a mansion – what they are doing at the Folly is recreating the appearance of the sham ruin, maintaining the ragged lines, the jumble of stone, an atmosphere that the building is falling down. This takes care, time and an appreciation of where they are working, it would be all too easy to make the repairs to uniform, too straight and by doing so we would loose the ruined appearance that Sanderson Miller the original architect in 1751 intended for the building.  So we should ask the conservators are they absorbing the building into their blood, the thoughts of the original builders and architect to give back the soul to the Folly.

Each photograph will take you through the process of the works.

1 Wall top before work commenced

A section of wall prior to any work

2 Plant growth removed and inspection commences

The section of wall with the plant growth removed

3 conserved and repaired wall top

The section of wall conserved and repaired to ‘a ruin’

The scaffold gives the opportunity of inspecting all areas (the cost of the scaffold to cover all walls and the main tower is circa £55,000) and it is amazing to see the building in a different perspective,  unfortunately we take these opportunities for granted and whilst the views are stunning from up top, there is so much conservation work needed to stabilise the building it is a case of looking at the walls in front of you and not the views behind you.

6 The views

The view

0 This is where they work

A head for heights required

7 Repaired wall top with ruined appearance

A conserved and restored ‘ruined’ wall

So next time your weeding think of the challenge you would have if you had a tree growing 15 metres in the air which you needed to remove.

8 Another small tree takes hold

A tree growing in the wall

10 Conservation work and the ruin

Conserved, repaired and a ‘ruin’

New doors and windows

This week, Cliveden Conservation Conservator, Andrea Walker, talks us through the doors and window replacement on the Folly Project.

Take the opportunity to climb the scaffold tower surrounding Folly, it’s currently open at weekends until the end of October, booking

Tracery Windows

Until now, the tracery windows on the Main Tower have been boarded up with timber and chicken wire. The idea of having the covers in place was to keep the worst of the weather and the pigeons out. (The pigeons here at the folly are a determined bunch and, if not kept in check, they muscle their way in and attempt to repopulate the interior of the tower.)

Blocked and boarded upIMG_3324

The covers are now being replaced with better ventilated options, floor-by-floor, to allow air into the tower while our specialist wood team work inside.New ventilated window coveres

Our friendly contact at Architectural Glass measured and template all 10 windows. With that and the few remaining examples of what are believed to be original frames, they’ve begun production of the new frames and glass.

Original window framesA bent original window frame

Once completed, we’ll hold off on installing these until closer to the end of the project, to ensure they don’t get broken.


Wimpole Folly 1979_13 (basement and entrance door)

The basement and entrance doors c1973

There are 2 doors on the Main Tower: one at ground level and one that will open off the wooden balcony we will be reinstating.

Original door at ground level

Original door at ground level

Original door_detail

Detail on original door

At ground level the original door is still in place and has been covered over with boards for it’s protection while we work around it. Maple Joinery will be refurbishing this door and reinstalling it closer to the end of the project.

Drawing for a new door

The other door will be made new, based on historic photographs and detailed measurements taken on site. This too will be installed closer to the end of the project, around the time the new balcony is also installed.

Gathering pace as we head indoors…

Paul Coleman the Project Manager updates us on the lastest news from the Folly Project at Wimpole.

The Folly project is now in full swing with large areas of stonework repaired and conserved to the outside, however this week we have started to investigate the inside of the Folly and plan the 1st aid repairs to the structure.

Like the scene from a horror movie, cobwebs hanging from every surface, creaking doors and floor boards the interior of the Folly is in a very very fragile state.  Since its completion in 1772 and later conversion to the Game keepers cottage in 1805, up until the late 1920’s it was in use,  this kept the building alive and in someways in good order. The following decades have seen a rapid deterioration, especially in the 1970’s when the roof collapsed causing water to allow the rot and decay to take hold.  Added to this over 15 years of pigeons using the inside as a pigeon roost we see those fine spaces intended to be appreciated by the 2nd Earl of  Hardwick in 1772 and later the game keeper in need of emergency repair to stabilise and secure them.

7 Wall lath and plaster deteriorating

Wall lath and plaster deterioration

Decaying timber surrounds you, the acrid smell of pigeon guano fills the air, plaster is falling from the walls and the temporary builders lighting gives a warm glow inside – it is an assault on your senses but the rooms have a quality, an atmosphere of beauty through their gradual decay.

The Prospect Room sits at the top of the tower intended for entertaining and enjoyment with its Gothic arched doorways, windows and fireplace – but the floor structure in completely rotten, floor boards missing and the wall plaster crumbling.

4 Prospect room

Prospect Room fireplace and missing floors

5 Prospect room windows

Prospect room windows

8 Looking through the floors

Looking through the floors

The floor above the Prospect Room is completely missing and the floating circular staircase which ascends the building hugging the inside walls from the ground floor kitchen up through the tower is at a point of collapse.

6 Missing floor above

Missing Floor above Prospect Room

3 Plaster crumbling

Plaster walls deteriorating

When complete in 1772, the tower had a ground floor and one upper floor (the prospect room), later with the conversion for the gamekeepers cottage two additional floors were inserted between the ground floor and upper level, to allow bedrooms to be provided.

1 Ground floor kitchen range

Ground floor kitchen range










2 Staircase


1772 staircase handrail, enclosed in 1805 when additional floors were inserted into the building








We‘ve analysed the floor timbers remaining these were the original oak timbers, however the floor boards had been replaced in the past with more modern softwood boards.  The works will focus on making safe the floors and making the building weather tight, this will enable us to safely access the building to maintain it in the future and plan how we conserve or repair those special interior spaces.

We are also focusing on the windows to put back the leaded light metal windows,  there are large areas of repairs to reform these and we are working from historic photographs and small sections of glazing to reconstruct these.

9 Window fragment being copied

Window fragment being copied

A day in the life of a conservator at Wimpole

Andrea at Cliveden Conservation talks us through the day in the life of a conservator on site with the Folly Project at Wimpole.

Walking up to the Folly

Not a bad walk to work

Conservators work in all sorts of buildings, in varied locations, in all weather conditions. The Gothic Folly project is reasonably physically demanding: it’s a large site, on a hill in the middle of fields so everything takes a bit longer on the big scaffold, with many of ladders.

The members of our team live all over England and taking accommodation closer to Wimpole for the duration of the project has made our commute a bit easier.

Our day starts around 7.30am; we meet at our compound to sort our tasks for the day and gather our tools.

Hard capping repairs - Camilla

Hard capping repairs

Photo - Camilla under tarpoline

Checking the mortar

By 8am we’ve taken our places on the scaffold and work is in full swing: gathering water and materials, caring for pointing and mortar repairs from previous days, raking out joints, brushing down surfaces, knocking up a mix, making repairs, lime washing.






Morning Start - Liz and Steph

Morning start

Some of us chat while we work, others listen to the radio, some even sing. Sunny days are best; shirtsleeves rolled up and sunglasses on. When threatened by rain, we’ll have our rain gear close by and the extra tarpaulins at the ready to cover our work (and ourselves!).






Our Tea Time and Lunch breaks are called by a shout or a whistle across the folly. Once down the hill, with a hot drink and packed lunches in hand, we chat and catch up, grabbing mobile reception to make contact with the outside world, then head back up for the final push to the end of the day.


Grabbing some shade at lunch 2

Time for tea

Another shout across the folly signals it’s time to wrap up. We secure our work against the weather overnight, tidy, lock the site and head home for the evening, in time to get enough rest to get up and do it all over again the next day.