Radial Joinery designed, manufactured and installed a bespoke dormer window for this Grade II listed property on Bailgate in Lincoln. The original window had failed following moisture problems, making complete replacement necessary.
The work involved more than manufacturing a new window. We prepared drawings for Listed Building Consent, coordinated with the conservation officer, arranged safe access in a busy city-centre location and managed specialist asbestos removal before installation could begin.
This project forms part of our timber windows in Lincoln service and our wider heritage and period joinery work.
Replacing a Failed Dormer Window on Bailgate
The existing dormer window had deteriorated because moisture had entered the structure. As the property is Grade II listed, the replacement needed to respect the proportions and appearance of the original window while improving its durability and performance.
We recorded the existing details and produced a purpose-made replacement rather than trying to adapt a standard window to the opening. This allowed the new joinery to sit naturally within the dormer and the surrounding historic building.
Listed Building Consent and Project Planning
Before manufacture began, we prepared the drawings and information required for the listed building application. We then worked with the conservation officer so the proposed design and materials could be agreed.
Bailgate is a busy historic street, so access also required careful planning. We arranged the necessary scaffolding permits with the local authority and coordinated with a local scaffolding company to provide safe access to the dormer.
Agreeing the design and access arrangements before manufacture helped the project proceed in the correct order and reduced the risk of delays during installation.
Asbestos Removal and Dormer Repairs
During the project, asbestos-containing material was identified within the dormer. We arranged testing and removal by a licensed specialist contractor before continuing with the building work.
Once the asbestos had been removed safely, the affected areas were replaced using a cement-based board in accordance with guidance from the heritage officer. This provided a suitable structure for the new window while addressing the condition of the surrounding dormer.
Bespoke Sapele Timber Window
We manufactured the replacement window in our Lincoln workshop using Sapele hardwood. Sapele is durable, stable and well suited to purpose-made external joinery.
The window was made with two side-hung opening sashes. Its overall proportions were based on the original so that the replacement remained appropriate for the listed property.
The window was fitted with Pilkington clear toughened double-glazed units. The units included argon-filled cavities and warm-edge spacer bars to improve thermal performance while retaining a traditional appearance.
Workshop Finishing and Traditional Ironmongery
Before installation, the window received an end-grain sealer followed by two coats of primer and undercoat. A white top coat completed the finish and provided protection for the external timber.
We fitted brass stays and handles to complement the character of the building. The combination of purpose-made joinery, suitable glazing and traditional-looking ironmongery allowed the replacement to meet modern practical requirements without appearing out of place.
Installation at a Grade II Listed Property
We installed the completed window from the prepared scaffolding and checked the fit, operation and surrounding details on site.
The finished work replaced a failed window, addressed the defective materials within the dormer and retained an appearance suited to this prominent Grade II listed property on Bailgate.
Projects of this type require joinery manufacture, conservation knowledge and careful coordination between specialists. Radial Joinery manages these elements as part of the complete service.
Related Timber Window Projects
- Accoya windows and doors for a listed property near Lincoln
- Sash window repairs for a listed building in Lincoln
- Replacement timber sash windows near Market Rasen
- Bespoke arched timber window in Nettleham
You can also view more completed Radial Joinery projects.
Discuss a Timber Window Replacement
If you require a bespoke replacement window for a listed, period or character property in Lincoln or the surrounding area, please send us photographs, approximate measurements and the full property address.
Call 01522 801760, message us on WhatsApp at 07368 659085, or use our project enquiry form.