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4 ReviewsStar Rating


Glassmarque Contact Details

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Susan Calderwood
13 Hill Street
BT17 0AD
Northern Ireland
Opening Hours
08:30 am-04:30 pm
08:30 am-04:30 pm

08:30 am-04:30 pm

08:30 am-04:30 pm

08:30 am-04:30 pm

08:30 am-04:30 pm



Other Dates

About Glassmarque

Glassmarque is a family-run business specialising in commercial and residential glazing, secondary glazing, frameless glazing and in the restoration of stained glass and heritage windows. With over 25 years in the industry, we offer a personal and dependable service. We are the only NI company with both an aluminium department and a restoration/stained glass department in-house.

Aluminium Glazing Systems:
  • Commercial & Residential Aluminium
  • Aluminium shop fronts
  • Aluminium windows and doors
  • Sliding and folding doors
  • Frameless doors
  • Curtain walling and structural glass
  • Glazed roof structures and roof lights
  • Glass screens, canopies, balustrades and stairways
  • Secondary glazing
Stained and Decorative Glass:
  • Stained glass
  • Church windows
  • Leaded windows
  • Secondary glazing
  • Stained glass repair, restoration & conservation
  • Heritage glass surveys and reports
  • Protection systems for historic glass
  • Storm glazing
  • Sandblasted, embossed and etched glass
  • Decorative mirrors
Commercial & Residential Aluminium
Glassmarque manufactures and installs custom aluminium glazing systems and provides a personal service to each individual client, both commercial and domestic. The product range includes bi fold doors, lift & slide doors, windows, curtain walling, screens, shopfronts, roof glazing and frameless architectural glazing. Our team has the technical knowledge and experience to advise on the best design and spec for your application. Aluminium framing is light yet strong, won't rust or rot and is maintenance-free powder coated in any colour. It allows maximum light but remains energy and heat efficient. Windows & doors are custom made to your sizes and spec. Double glazed units are filled with low E gas and roof lights include self-cleaning glass. Frames are guaranteed for 1 year and double glazed units for 10 years.

Frameless Glazing
The clean and minimal look achievable with frameless glazing is perfect for modern architectural designs and brings in a large amount of natural light as well as maximising views. Although contemporary, it marries very well with old structures and can be shaped and fitted to brick or stone. Doors, screens, walkways, glazed links, partitions and entrances are all suitable applications for using frameless glazing.

Restoration & Repair
Glassmarque has 30 years’ experience restoring antique windows, stained or leaded glass and metal frames. We are the only local company able to restore heritage glass and to manufacture and fit aluminium framed glazing for the same project. Restoration is often followed with our bespoke exterior protection system or, if heat loss is a problem, with our low profile aluminium framed secondary glazing. We are experts in installing to brick and stonework in churches and listed buildings and are members of the National Churches Trust.

Stained Glass
Glassmarque's stained glass artist uses traditional methods to cut, paint, fire & assemble the window. We will work with you to create a design which fulfills your brief and creates a beautiful window for future generations.

Decorative Glass
Decorative glass incorporates painted, etched or sandblasted glass to create mirrors, lanterns, panels and screens. Each design is unique, delivering both decoration and character to the location. We work along with businesses, architects and interior designers to fulfill the client's objectives and we install our work in bars, clubs, restaurants, civic buildings and to the domestic customer

Reviews & Testimonials for Glassmarque

5 star review
August 24, 2018
We had a seamless installation of a frameless glass screen and door from Glassmarque. From the first meeting we received a professional and friendly service. Highly recommended local company. Many thanks from all at Keens Furniture!

Testimonial by
Johnny Smyth, Keens Furniture
5 star review
January 10, 2018
Glassmarque do the job when they say they will and the standard of the aluminium windows and doors is first class.
Testimonial by
John Fitzsimons, Crofton Sales & Marketing Ltd
5 star review
March 14, 2017
Having been a customer for over 10 years now, I have found Glassmarque to be very professional and reliable in their approach to all aspects of installing aluminium shopfronts and doors.
Testimonial by
Pat McCrisken, Supreme Shopfitting
5 star review
January 30, 2016
We engaged Glassmarque to design & install a stained glass window as a memorial. I would highly recommend them for their professional, caring attitude. The new window is bright and colourful and is an iconic feature in our centre.
Testimonial by
D Scott
Glassmarque. 5 out of 5 based on 4 ratings.




QUB Lanyon Building completed in 1849.Architect was CharlesLanyon, iconic and much loved Victorian
Gothic Tudor building.

Deterioration of the façade over the years meant
extensive restoration was necessary. Substantial
restoration of the facade began in 2017.
Glassmarque was awarded the contract for the window
restoration. Glassmarque is the only company in Ireland to undertake this type of restoration. It allows most of the original frames to be retained, meets with best conservation practice and is much cheaper than the usual method of window replacement.

Half of the West facade contains 150 year old original windows and the other half has lattice window which were installed around 70 years ago. The North elevation, facing the Lynn Library building, has 51 year old lattice windows.The zinc frames are ornate lattice; some with shaped tops which fit into trefoil shaped stone surrounds. Over time they had corroded badly and were covered in thick layers of paint which had spread over the glass. Many panes were broken and some previous glazing repairs had been badly done. Due to the building not having sufficient ventilation, some sashes were added into the zinc windows many years
ago and these had gradually rusted, causing damage to the stone façade. The windows had deteriorated to a serious state.

This was a challenging contractfor Glassmarque to undertake. It involved careful and highly detailed
work whilst taking the needs of University life into account at all times. Many of the frames
disintegrated as they were removed from the stone façade and had to be completely rebuilt. Frames were painstakingly restored, re-painted and re-glazed using glass made in the antique tradition. Where ventilation was still inadequate, new
bronze frames were painted, glazed and fitted in replacement of the old steel sashes or the original hopper ventilators. In the North elevation there were over 100 more recently fitted plain windows which were not in keeping with the facade. The
challenge here was to replace these with new zinc lattice windows to match the original.

This restoration work should be fully completed by March 2019. The façade will look as stunning as it did in 1849 should continue to do so for another 100 years.

Glassmarque is a local company and does not just specialise in heritage window restoration. They
also complete contemporary projects, for example the installation of a 13m frameless structural glass screen in the Lynn Library QUB. They also fabricate and install commercial and residential
aluminium, secondary glazing, frameless glazing and stained glass windows.
Products & Services

Aluminium doors

Lift and slide doors

Bi fold doors

Sliding patio doors

Aluminium windows

Roof lights

Glazed links and partitions

Frameless screens

Frameless doors

Aluminium shop fronts

Curtain walling

Secondary glazing

Frameless glazing

Commercial aluminium glazing

Residential aluminium glazing

Replacement steel windows

Stained glass

Protection systems


Name Role Email Telephone
Lewis Calderwood Director - Aluminium & Frameless Glazing 028 90301946
Stephen Calderwood Director - Window Restoration, Stained Glass, Secondary Glazing 028 90301946
Susan Calderwood Marketing, Advertising & Sales 028 90301946
Karen Calderwood Accounts & Sales 028 90301946

Glassmarque Serves The Following Areas

Glassmarque General Description

Stained Glass design Northern Ireland Stained Glass Repairs Northern Ireland Stained Glass restoration Northern Ireland Stained glass conservation Northern Ireland Stained Glass design Northern Ireland Stained Glass Repairs Northern Ireland Stained Glass restoration Northern Ireland Stained glass
Ann Sotheran Stained GlassCanopy Products LtdCastle Scaffolding Northern LtdBristol Forklifts LtdC-Tec Building SolutionsM R Services (Essex) LtdDCRJ ServicesThames Valley Archaeological ServicesTFC LtdJMR Section Benders
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