JOHN KENNETH CLARK - GLASSPAINTER
Commissioned Architectural Artist
Commissioned Architectural Artist
For over 35 years I have created site-specific architectural glass art across the UK, Germany, USA, China, and Africa. This website showcases my commissioned works in fused glass, painted glass, etching, and mosaic for cathedrals, distilleries, and heritage buildings.
As a commissioned artist, I design each piece specifically for its location and architectural context. My priority is creating work that is appropriate to the building and its purpose, rather than repeating a single signature style.
I began my career as a traditional Glasspainter and continue to use that term with pride. While I maintain a small studio for sampling and development, larger commissions are realised in collaboration with leading studios including Derix Glasstudios (Germany), Bullseye Glass (USA), and Nakshi Glass (Kenya) — a studio I helped establish.
One of my most significant projects was leading the complete artistic scheme for the Sacred Heart Cathedral in Kericho, Kenya. This ambitious project resulted in the creation of Nakshi Glass Studio, bringing high-quality glass art production to East Africa.
Dalmore Still Room Window
Material - Bullseye Glass and fritCommissioned and completed in 2023-24
made public April 2026
The Still House Window at Dalmore Distillery
This is the most important window I have made in Europe for over ten years. It is something totally unique and special. As with many times in my career, I have pushed the limits of the material. For this project I used the astonishing Bullseye Glass.
The still house at Dalmore Distillery presented a rare opportunity — a south-facing wall of architectural scale, flooded with the ever-changing light of the Scottish Highlands, overlooking the waters of the Cromarty Firth. Commissioned by Dalmore and developed in close collaboration with Threesixty Architects of Glasgow, this fused glass artwork spans ten metres from floor to ceiling and forms the visual centrepiece of one of Scotland's most ambitious distillery developments.
The work is entirely abstract yet deeply narrative, tracing the journey of whisky from the earth upward — terroir, barley, distillation, maturation, and finally the fleeting grace of the angel's share, suspended in a lattice of pale amber at the summit of the glass. Using crushed Bullseye glass frit fused to sheet glass, a technique developed over years of international practice, the window creates thousands of small lenses that respond to every shift in light and movement, transforming the space throughout the day.
This is not decoration. It is a work conceived for this building, this light, and this story — and it is intended to remain an essential part of the Dalmore experience for generations to come.
demonstrating the lensing quality of the final fused glass and showing the changes that happen with the changing light
This little video shows the window being made. I developed new methods in making this work to achieve the design I had presented. I spent five months almost daily in the studio to make this work, often I wasn't sure exactly what I was going to do, especially in the sheet glass areas.
you can see here how the frit, crushed glass, is being used. There is a beautiful random quality that happens during the firing. I can position the frit, but the heat and chemical reaction is not predictable or controllable, which
The Art Works for Kericho Cathedral.
Being invited to become involved with the new cathedral in Kericho was a transformational moment in my life and in the lives of the artists and craftsman I worked with on the project..
At the time of writing this text it is 10 years since the building was dedicated. All the art works were not completed at the dedication, 24 May, 2015, but most were completed by the end of that year.
During the period before I was invited, although I had done many wonderful projects, I had the feeling that I had not really reached my potential and felt some frustration. This project cured that. I was involved in everything. Part of the architectural design team, answerable only to the client through the lead architect for the project Mr. George Paterson who invited me to work with him. My role was to define the art works and find artists and artisans to make them, design when needed, mentor and assist and to create some works for the building. It was an astonishing challenge.
One request from the client was to find a way to enable the equipment and materials that were imported for the project be maintained and used in some way to the ongoing benefit of Kenya. This we did. The ongoing studio in Naorobi is called Nakshi Glass.
I made a video about the whole project, mainly focussed on the art works. This can be seen using the link below.
The concept of the Nakshi Glass Studio is to realise the legacy of the massively complex project for Kericho, Sacred Heart Cathedral.
The art works for the Cathedral were to utilise and develop the potential of Kenyan Artists and craftsmen.
Our principal artist for the Kericho project was Florence Wangui who has designed and made the glass “Stations of the Cross”panels and the bronze relief sculpted panels for the main doors. These were sculpted by Florence Wangui and transformed into bronze by Rajinder Kumar Anand at Alchemist Workshop in Nairobi.
For the Kericho project we also accessed the work and abilities of mosaicists and sculptors. This 40 sq/mt natural stone mosaic was made in Maragua by Githaka Karuri and his team.
We had amazing technical support throughout by the Propolis Studio of Nairobi who were involved in many aspects of the Cathedral project and specifically with us in the construction of the steel doors into which the bronze panels are set.
The crucifix was made in Karen by Toumer Yeshim who developed this wonderful method of brass casting.
I designed the roof, made of Kenya Clay tiles has a pattern based on wheat. Three statues made of local soapstone.
When the Kericho Cathedral Project began, I suggested that the project be filmed. the clients didn't want anyone from outside to be involved, but if one of the team could make some home videos, that would be great. so began my dangerous extra career as film maker.
Just to explain some of the methods and techniques I use when creating glass projects. this little set gives an indication of the method and how it works. it will help you understand the terminology used.
Glass is not quite completely melted onto a mould. The glass is liquid enough to take up all the detailing on the mould but not so hot as is required for complete fusing. glass slumping
Flashed glass, a layer of colour fused onto a base glass during the making process, is etched away using acid. various methods are used to shield the colour from the acid allowing a wide range of tone within the glass pieces. These examples use transparent plastic foil as the resist.
About glass etching
Generally, a black or brown special pigment that is painted onto the glass, think of charcoal on paper. It can be linear or tonal. When the paint is applied to the glass it has to be fired at around 600C to make it permanent. In this image transparent glass colour and silver stain are also used.
About glass painting
This example is made using Bullseye Glass. A mould was made by casting a clay sculpture, a negative mould is created, in this case Bullseye amber frit (crushed glass) was poured into the moul, sheet glass on top and it was fused (melted), the glass picking up the details from the mould. about glass fusing
A combination of glass repeat etching and then traditional glass painting and silverstaining to create this extraordinary complex image.
more about glass etching
Generally I use Bullseye glass when I am fusing. There are other companies, but I like and trust Bullseye. This is a detail from a colour range I made to establish a tonal range from some colours for my music-glass concept
glass fusing
The “Shattered Elephant” theme stands out as one of the most striking concepts for conservation. These magnificent creatures, despite their size and strength, are terribly vulnerable to modern weapons and the brutality and greed of humanity.
We first developed this idea when invited to explore themes for glass artworks for the Uhuru Gardens Museum Complex. This ambitious architectural project, both huge and exciting, is nearing completion but has been stalled for the past few years. The original concept presented to us didn’t work as a glass project—it was entirely impractical—so we began rethinking what might.
Our initial panels stood about 90cm high. We modelled them in clay, then turned them into “investment moulds” that could be fired in our large studio kiln. These early works were three “float glass” panels—normal window glass, but over 20mm thick. We shared them with the museum’s committee, and they sparked a decision to commission two panels on the conservation theme, focusing on the elephant.
We also fused a panel using “Bullseye Glass.” Unlike float glass, it has no green tinge and stays very transparent, though it’s far more expensive. Eventually, we were commissioned to create a large version of the “Shattered Elephant” concept as one of the two panels for the museum. We based this sculpture on a famous tusker named Satao. The piece went through four development stages before we crafted the final mould. In 2021, we fused the elephant part, but the project has since slipped into stasis, leaving the work incomplete. Still, we’ve kept exploring the theme on our own.
For more information or purchase inquiries, please feel free to contact us.
Thank you for your interest in the Shattered Elephant!
this was created by taking a mould of an already shattered elephant and casting it again allowing the background als9 to break and shatter.
View Project
in this case I have used the frit, crushed glass, to create a drawing of the elephant and allowing the fusing process, the extreme temperature to randomly pull the particles together in a controlled manner.
View Project
this is taken from the first elephants we made in the Nakshi Glass Studio in Kenya. this elephant is around 90 cm tall and has been fused on a sheet glass base.
View Project
These Windows were created to try to partly emulate the original Victorian Windows that had been destroyed. In discussions with the church, three themes were selected. Following the acceptance of the designs, I made these windows at the Derix Glasstudios in Taunusstein, Germany.
It wasn't the intention to try to deceive that these were the originals. However I did try to source the types of figures and borders from small sketch designs found in the church archives. I was asked to create more of a feeling of space within the works. This was achieved by extensive acid etching.
The second part of the project was to create to sets of nine windows for the side facades, probably east and west. These we agreed should be an Old testament window and a New Testament window each with a small rose window at the apex.
Holy Trinity Shanghai - Christ Windows Material - Lamberts Glass, mostly Flashed Glass Technique - Extensive etching, painting and silver staining Dimensions - 3 x mts x 0.7mts Explanation of the design concept.I have tried to design a set of windows that in keeping with the style of the original windows from early in the 20th Century and within this style, to interpret the themes selected by the church. The style of work and the architectural elements, canopies and borders are taken directly from works made by the company who, I am fairly sure, made some the original windows for the Holy Trinity in Shanghai. John Hardmann and Co, London.
The Holy Trinity Cathedral, known as the “Red Church” due to its red brick exterior, is an Anglican church in Shanghai, originally constructed in 1866–1869 by architect Sir George Gilbert Scott.
By the 1920s, the cathedral was a central hub for the Anglican community in Shanghai’s International Settlement, serving both religious and social functions for the expatriate population.
This illustration shows the West facing facade.
Firstly the windows behind the altar were made and installed. Soon after, designs for the East and West facades were commissioned, designs were produced and the windows made.
The first stage was the three Windows behind the Altar. We agreed that there should be three themes, one in each window. There is a very fuzzy photograph showing that originally there were six themes, two in each window. I was asked to work in the style of the probable originals but to use my approach using acid etching to create a less visually heavy set of windows with a greater sense of space. The second part of the commission was to create windows for the east and west facades. We agreed on Old Testament and New Testament themes and using the same visual language as the windows in the south facade although these windows were to be less like Victorian Windows.
When I was designing the Noah Window, I added a panda climbing out of the hold. This caused great delight when it was seen.
I am not sure if services are held in the building or if it is open to the public.
Following the completion of the second set of windows, I edited a short film about the making of the windows focussing on the making of the two small Rose windows. Follow the link below to see the video.
One of the lancets behind the altar. The Garden of Gethsemane. this set of three windows were the first part of the project. I think that these Windows are basically south facing.
View Project
The East facade, a series if 8 vertical windows and a small rose window. The theme of this facade is the Old Testament and this panel shows the figure of Ezekiel.
View Project
Same structure as the east facade. the theme of this set of windows is the New Testament. this is one of the Evngelists, John.
View Project
this joyous and colourful window is made using Bullseye Glass. i love this glass. it can be melted together or, like in this project, on a base glass.
It was made in the Nakshi Glass Studio in Nairobi for a private villa in the Karen district.
this joyous and colourful window is made using Bullseye Glass. i love this glass. it can be melted together or, like in this project, on a base glass.
It was made in the Nakshi Glass Studio in Nairobi for a private villa in the Karen district.
We wanted to make something in glass a bit like the Matisse cutout collages. There was no specific theme given by the clients except there should be a bright African sun. the first idea was just the giraffe. this is a staircase window and the thought was that a giraffe could walk past. The elephant was requested and this concept was prepared.
The Queens Park Synagogue Project This was an amazing project that I was commissioned to make in the early 1990's. The windows, apart from the Dome, half dome, are on the theme of the Jewish Festivals. This was the most incredible project to make. The first set, Rosh Hoshanah and Yom Kippur, Pesach and Shavuos were all made in my Glasgow Studio. The rest of the windows beginning with the Sabbath through Sukkot, Simchat Torah, Chanukah, Rosh Chodesh and the rest of the minor festivals were made at the Derix Studio in Germany. Recently, I made a small film showing the windows and the dismantling and removal of these windows from Queens Park Synagogue. This was filmed for the television quality of the time. I was in Glasgow in 2017 and filmed the windows in their new location. I hope to create a film about the windows in the new location. There is also a historical documentary that could be made about the project.
The Holy Trinity Cathedral, known as the “Red Church” due to its red brick exterior, is an Anglican church in Shanghai, originally constructed in 1866–1869 by architect Sir George Gilbert Scott.
By the 1920s, the cathedral was a central hub for the Anglican community in Shanghai’s International Settlement, serving both religious and social functions for the expatriate population.
This illustration shows the West facing facade.
Firstly the windows behind the altar were made and installed. Soon after, designs for the East and West facades were commissioned, designs were produced and the windows made.
The first stage was the three Windows behind the Altar. We agreed that there should be three themes, one in each window. There is a very fuzzy photograph showing that originally there were six themes, two in each window. I was asked to work in the style of the probable originals but to use my approach using acid etching to create a less visually heavy set of windows with a greater sense of space. The second part of the commission was to create windows for the east and west facades. We agreed on Old Testament and New Testament themes and using the same visual language as the windows in the south facade although these windows were to be less like Victorian Windows.
When I was designing the Noah Window, I added a panda climbing out of the hold. This caused great delight when it was seen.
I am not sure if services are held in the building or if it is open to the public.
Material - Lamberts Glass, mostly Flashed Glass
Technique - Extensive etching, painting and silver staining
Dimensions - 3 x mts x 0.7mts
Explanation of the design concept.
This is a concept that I developed when I was looking for a useable link between music and colour. I had an idea that it would be interesting to see what music would look like flattened out as an image.
In the case of bagpipe music as the sound is continuous, I decided that the music should be illustrated as strips of colour. Once I had developed the system, one of the first pieces I transposed was"the Flowers of the Forest" a very famous bagpipe tune. I was astonished at the pattern and structure that was involved.
I began transposing notation that I could play so was looking at guitar music which I can play and started creating the images. I found it then and still find this quite fascinating.
he main projects I am working on presently I can't discuss or show at the moment. But these small projects were interesting in their own way. All Three shown here are fused works using Bullseye Glass
These are some pieces I made last year.
Two small windows for a friend of mineIn the case of bagpipe music as the sound is continuous, I decided that the music should be illustrated as strips of colour. Once I had developed the system, one of the first pieces I transposed was"the Flowers of the Forest" a very famous bagpipe tune. I was astonished at the pattern and structure that was involved.
I began transposing notation that I could play so was looking at guitar music which I can play and started creating the images. I found it then and still find this quite fascinating.
I made two bagpipe tunes for the Piping Centre in Glasgow. this shows the tiny strips of colour being placed on the design.
They are two new tunes and are dedicated to the main founders of the Piping Centre. one is written by Finlay McDonald, the other, I composed with Finlays help. although they are on the premises they have not yet been installed.
Commissioned by a bagpiper freind of mine, these two Bullseye Glass panels show the passage of Venus around the sun.
it was an intriguing project to make. firstly I had the white areas cut using water jet cutting, the first time I have done this, the pieces were two small and some too complicated to cut by hand. these were fused onto the panel and then the colour was added and all fused again.
r View Project
i saw a small, well it looks small, brass sculpture on X one day. it may be the work of Eric Gill, I haven't been able to verify this. I really liked it so decided to make a version of it as a glass relief sculpture. i carved it into a slab of plaster. then cast it to get a negative mould, cast a positive in that and then created the investment moukd. the glass ysed again was Bullseye.
View Project
This small panel, but heavy, is based on a beautiful stone relief sculpture, a very famous one from the Cathedral in Autun, France. I have always loved this image since I first saw the sculpture. I always wanted to do something with it in Glass.
The opportunity came when I was invited by Bullseye Glass to spend time in the Northlands Studio in Caithness, sadly since closed down. I had taken a sample to make from my recently completed Glenmorangie window to make. Michael Bullen, the studio leader, asked me if I would like to try casting. Although I worked with relief sculpture, I had never cast and made repeatable moulds. This was actually the defining moment for my work for around the next 8 years.
I made this piece as a clay, we cast it, made a positive and negative version and then made them using Bullseye frit. What I learned in those few weeks was the basis for the glass work that we used for the Cathedral in Kericho and some of the ongoing work we do in the Nakshi Glass Studio in Kenya.
John's restoration of our cathedral windows brought them back to life. His attention to historical detail while ensuring structural integrity was remarkable.
Father Michael Donovan
St. Andrew's Cathedral
The custom stained glass John created for our home has transformed the space. The way light interacts with his work throughout the day creates a living art piece.
Elizabeth Harrington
Private Client
Working with John on our public installation was a seamless experience. His ability to translate our vision into a stunning glass artwork exceeded our expectations.
Richard Thompson
City Arts Commission
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