Radial Joinery designs, manufactures and installs bespoke timber windows for properties throughout Lincoln and Lincolnshire.
Our purpose-made windows include traditional sash windows, box sash windows, Yorkshire sliding sash windows, flush and stormproof casement windows, mock sash windows and heritage replacement windows.
Every window is manufactured to order in our Lincoln workshop. This allows the proportions, frame sections, glazing bars, mouldings, opening arrangements and finish to be designed around the property rather than restricted to standard sizes.
We also assess existing timber windows for repair and restoration where retaining the original joinery is practical.
Timber Windows Made for Lincolnshire Properties
Properties across Lincolnshire range from listed buildings and traditional cottages to Victorian houses, converted agricultural buildings and modern homes. The most appropriate window design depends on the character of the building, the existing opening and the performance required.
Our timber window work includes:
- Traditional sliding sash windows
- Box sash windows
- Yorkshire horizontal sliding sash windows
- Mock sash windows
- Flush timber casement windows
- Stormproof timber casement windows
- Fixed and opening window sections
- Heritage replacement windows
- Specially shaped and non-standard windows
- Timber window repairs and replacement components
- Accoya timber windows
Matching bespoke timber doors, frames and glazed screens can also be manufactured where a project requires consistent joinery throughout the property.
Traditional and Box Sash Windows
Traditional sash windows are an important feature of many period properties in Lincoln and the surrounding towns and villages.
A box sash window normally contains vertically sliding glazed sashes, balanced using weights concealed within boxes at each side of the frame. The proportions of the sashes, meeting rails, glazing bars, horns and surrounding frame all contribute to its appearance.
Depending on the property and specification, our sash window work can include:
- Purpose-made box sash windows
- Like-for-like replacement sash windows
- Single or double-glazed sash windows
- Traditional glazing bar arrangements
- Replacement sashes and individual components
- Sash cords, weights and operating hardware
- Replacement sills, rails and damaged frame sections
- Repair and restoration of suitable existing sash windows
- Flush timber casements
- Stormproof casement windows
- Side-hung opening lights
- Top-hung opening lights
- Fixed glazed sections
- Traditional glazing bars
- Specially shaped window frames
- Accoya frames and casements
- Double glazing where suitable
- A traditional sash-window appearance is wanted
- The customer prefers casement-style operation
- The opening or construction is not suited to a complete box sash
- The surrounding windows use a similar mock-sash arrangement
- A replacement must maintain balanced external proportions
- Traditional frame and sash proportions
- Existing glazing-bar arrangements
- Purpose-made moulding profiles
- Window horns and meeting rails
- Specially shaped frames
- Historic opening configurations
- Matching sills and surrounding timber components
- Excellent resistance to timber decay
- Very low levels of swelling and shrinkage
- Improved dimensional stability
- Strong performance beneath painted coating systems
- Suitability for traditional profiles and mouldings
- A long service life when correctly manufactured and maintained
- Removing decayed or failed timber
- Manufacturing matching replacement sections
- Timber splice repairs
- Repair Care epoxy resin repairs where suitable
- Replacement window sills
- Repairs to sashes, rails, stiles and joints
- Replacement glazing bars and timber beads
- Reproduction of existing mouldings
- Preparing repaired areas for finishing
- The deterioration is localised
- Most of the frame and opening sections remain sound
- The existing window has historic or architectural value
- Replacement components can be joined securely into sound timber
- Conservation requirements favour retaining original material
- Decay affects most of the frame or opening sections
- Previous repairs have failed extensively
- The window no longer operates safely or reliably
- The existing window is unsuitable for the property
- The required improvements cannot reasonably be achieved through repair
- Double-glazed units
- Toughened or other safety glass where required
- Obscure glass for bathrooms and private areas
- Traditional glazing-bar arrangements
- Duplex glazing bars
- Fixed and opening glazed sections
- Decorative or heritage-style glazing where appropriate
- Recorded measurements
- Timber selection
- Frame and sash construction
- Window proportions
- Glazing-bar layouts
- Mouldings and architectural details
- Opening arrangements
- Ironmongery preparation
- Surface preparation and finishing
- Final fitting and adjustment
- Initial enquiry: Send photographs, rough measurements, drawings, the full property address and details of the windows required.
- Initial review and estimate: We assess the supplied information and provide an initial estimate where there is enough detail.
- Acceptance and deposit: A 50% deposit secures the project within our schedule.
- Site survey: We visit the property to take accurate measurements and inspect the openings and existing joinery.
- Design and specification: Window sections, glazing, ironmongery, ventilation, finish and other details are developed. Drawings are produced where required.
- Final confirmation: The final specification and cost are confirmed before manufacture begins.
- Workshop manufacture and finishing: The windows are manufactured, assembled, prepared and finished in our Lincoln workshop.
- Installation: Where included, the completed windows are installed, glazed, adjusted and prepared for the applicable inspection or sign-off.
- Accoya windows and doors for a listed property in Martin
- Yorkshire sliding sash window in Hackthorn
- Bespoke timber windows and back door in Stubton
- Sash-window repairs for a listed building
- Heritage timber sash-window replacement
Our purpose-made box sash windows are designed for individual properties throughout Lincolnshire, with the proportions, glazing bars and architectural detailing considered for each building.
View an example of our sash-window repair work in a listed building.
Yorkshire Sliding Sash Windows
A Yorkshire sash window slides horizontally rather than vertically. This traditional style is found on cottages, farmhouses and other older properties throughout Lincolnshire.
We can manufacture replacement Yorkshire sash windows using the existing opening, original window, photographs, drawings or recorded measurements as a reference.
The window can be designed with traditional proportions, suitable glazing bars and the opening arrangement required for the property.
See our purpose-made Yorkshire sash window in Hackthorn.
Timber Casement Windows in Lincolnshire
Casement windows use hinged opening sections rather than sliding sashes. They are suitable for traditional, heritage and modern properties and can be manufactured in many different sizes and configurations.
Our casement windows can include:
Flush casements sit more closely within the face of the frame and are often chosen where a traditional appearance is important. Stormproof casements overlap the frame and may suit properties where increased weather protection is required.
The correct option will depend on the building, exposure, required appearance and any planning or conservation restrictions.
Mock Sash Windows
A mock sash window is generally a casement window designed to recreate the appearance and proportions of a traditional sliding sash window.
Although the window looks similar to a sash window from outside, the opening sections are normally hinged like a casement rather than sliding vertically within a box frame.
Mock sash windows may be suitable where:
We have manufactured mock sash windows for selected projects and can assess whether this style is appropriate for the property. The glazing arrangement, meeting-rail appearance, horns, mouldings and opening configuration can all be considered as part of the design.
Replacement Timber Windows
When an existing window is beyond practical repair, Radial Joinery can manufacture a bespoke replacement designed to suit the opening and property.
The original window can often provide useful information about the appropriate proportions, frame depth, glazing layout, mouldings and opening arrangements.
Where the existing window is unsuitable or has previously been replaced with an inappropriate product, surviving windows elsewhere on the building, historic photographs, architectural drawings and neighbouring properties may help inform the new design.
Our replacement timber windows can be supplied with glazing, ironmongery, seals, ventilation and a completed coating system as required by the agreed specification.
Heritage Windows and Listed Buildings
Replacement or alteration of windows in a listed building may require Listed Building Consent. Properties within conservation areas may also be subject to additional planning controls.
Where approval is required, the design, materials, glazing, opening arrangement and finish should be agreed before manufacture begins.
Radial Joinery can manufacture windows that reproduce important details from the original joinery, including:
Our wider heritage and period-property joinery service covers traditional windows, doors, architectural mouldings and other purpose-made joinery.
Accoya Timber Windows
Radial Joinery is an Accoya Approved Manufacturer. We frequently recommend Accoya for premium painted external windows where durability and dimensional stability are important.
Accoya provides:
Its stability helps opening sashes and casements operate reliably while reducing movement at joints and around glazing.
Accoya is not the only possible timber for every project. The final choice will depend on the design, required finish, exposure and any heritage requirements.
Learn more about Accoya windows, doors and external joinery.
Timber Window Repairs and Restoration
Complete replacement is not always necessary. Where much of the original window remains sound, localised repairs may retain more of the building’s existing joinery and extend its working life.
Repair work can include:
Some deterioration only becomes visible once loose coatings, failed repairs or decayed timber have been removed. For this reason, larger restoration projects may be priced using an agreed day rate or with appropriate allowances for additional concealed damage.
Read more about our timber joinery repair and restoration service.
Should a Timber Window Be Repaired or Replaced?
The decision depends on the condition, significance and construction of the existing window.
Repair may be suitable where:
Replacement may be more appropriate where:
Each project is assessed individually before a repair or replacement approach is recommended.
Glazing and Glazing Bars
The glazing specification is selected according to the window design, property and applicable requirements.
Options can include:
Where modern double-glazed units are used in traditional-looking windows, duplex bars and external timber glazing bars can help produce a more convincing appearance than glazing bars fitted only inside the glass.
Trickle Vents and Building Regulations
Ventilation requirements should be considered during the design stage. Where trickle ventilation is required, we can investigate discreet or concealed solutions that reduce the visual effect on the finished window.
This may include vents concealed externally and flush-mounted internally where the window design and specification allow.
Building Regulations requirements vary according to the property and scope of work. Where applicable, the installation can be arranged for Building Control inspection and sign-off.
Manufactured in Our Lincoln Workshop
All Radial Joinery timber windows are manufactured in our Lincoln workshop.
Producing the windows in-house gives us control over:
We work throughout Lincoln, North Hykeham, Nettleham, Welton, Woodhall Spa and surrounding Lincolnshire towns and villages.
Explore our local heritage and window services in Nettleham, Welton and Woodhall Spa.
Our Timber Window Process
Our normal process is:
For listed buildings or projects requiring planning approval, the appropriate permission should be obtained before manufacture begins.
Examples of Timber Window Projects
You can also view more completed Radial Joinery projects.
Timber Window FAQs
Do you manufacture timber windows in Lincoln?
Yes. Our timber windows are designed and manufactured in our Lincoln workshop for properties throughout Lincoln and Lincolnshire.
Do you manufacture box sash windows?
Yes. We manufacture purpose-made box sash windows and replacement sash components to suit traditional and period properties.
What is a mock sash window?
A mock sash is normally a casement window designed to resemble a traditional sliding sash window. It provides sash-style proportions while using hinged opening sections.
Do you manufacture timber casement windows?
Yes. We manufacture flush casement, stormproof casement, fixed and opening timber window sections in bespoke sizes and configurations.
Do you repair existing timber windows?
Yes, where repair is practical. Work can include timber splicing, Repair Care resin repairs, replacement sills, sash repairs and purpose-made replacement components.
Can timber windows be double glazed?
Yes, many new timber windows can incorporate double-glazed units. The appropriate glazing will depend on the design, property and any listed-building or conservation restrictions.
Do you manufacture Accoya windows?
Yes. Radial Joinery is an Accoya Approved Manufacturer, and we regularly use Accoya for painted external windows and other premium external joinery.
Can you match an existing window?
We can reproduce important proportions, glazing layouts, mouldings and construction details using the existing window, recorded measurements, drawings or surviving examples as a reference.
Do you install the windows you manufacture?
Yes. Installation can be included as part of the complete project, depending on the location and agreed scope of work.
Discuss Your Timber Window Project
If you require sash windows, box sash windows, casement windows, mock sash windows, heritage replacements or timber window repairs in Lincolnshire, please send us details of the project.
Photographs of the existing windows, rough measurements, the number of windows and the full property address will help us prepare an initial assessment or estimate.
Call 01522 801760, message us on WhatsApp at 07368 659085, or use our project enquiry form.