Custom Made Windows in Dublin & Ireland
Made-to-Measure Windows
100% Satisfaction Guaranteed with Up to 15-Year Warranty
Custom Windows – Free Quote Form
Tell us the approximate size, preferred material and any unusual shape, colour or glazing requirements. Upload photographs to help us understand your custom window project.

CUSTOM SIZES & SHAPES

DOUBLE OR TRIPLE GLAZING

PROFESSIONAL INSTALLATION
When standard-sized windows do not suit your property, Expert Windows can supply and install custom made windows in Dublin and across Ireland. Choose the dimensions, shape, material, colour, opening style and glazing that work for your space.
Our bespoke windows are available in uPVC, aluminium, timber and AluClad, with double or triple glazing. They are suitable for unusual replacement openings, older homes, extensions, new builds and architectural features.
Every unit is surveyed and specified for the property rather than selected from a limited range of standard dimensions.
Windows Made to Fit Your Home
Made-to-measure windows can be designed for:
- Non-standard replacement openings
- Large, narrow or unusually proportioned spaces
- Older properties and period-style renovations
- Extensions and new-build homes
- Gable ends, feature walls and stairwells
- Arched, circular, triangular or angled openings
A custom specification lets you:
- Fit the opening accurately
- Retain important proportions and character
- Choose fixed or opening sections
- Coordinate frame colours and glazing
- Balance natural light, ventilation and privacy
Design Your Custom Windows
A bespoke window is about more than measurements. Depending on the selected system, you can choose:
- Made-to-measure width and height
- Rectangular or special-shaped frames
- Fixed, side-hung, top-hung or inward-opening sections
- Casement, tilt-and-turn, sash and picture-window styles
- Double or triple glazing
- Clear, obscure, decorative or acoustic glass
- Georgian bars and decorative glazing bars
- Internal and external colours, wood effects and RAL finishes
- Security hardware, handles and finishing trims
The possible size, shape and opening configuration depends on the selected frame material, glass weight and structural requirements. Some complex shapes may need to remain fixed.
Explore our casement windows and tilt-and-turn windows for popular opening configurations.
Custom Window Materials
The right frame material depends on the opening, appearance, maintenance preferences, glazing and budget.
Our made-to-measure range includes:
- Custom uPVC windows – practical, low maintenance and suitable for many replacement openings
- Custom aluminium windows – slim, strong frames for larger panes and contemporary designs
- Custom timber windows – natural character for older homes and traditional renovations
- Custom AluClad windows – timber internally with a durable aluminium exterior
Compare our uPVC windows, aluminium windows, timber windows and AluClad windows.
Custom Window Buying Guide
A reliable specification brings together measurements, structural limits, glazing, appearance and installation.
1. Measurements and Opening
Confirm:
- Accurate survey dimensions
- Existing frame and wall condition
- Access for removal and fitting
- Required ventilation
- Any structural supports or restrictions
2. Frame Material and Structural Limits
Every frame and glass system has minimum and maximum sizes. Larger panes, special shapes or opening sections may require a different material or revised configuration.
3. Glazing Specification
Consider:
- Double or triple glazing
- Thermal insulation and solar gain
- External noise and acoustic glass
- Privacy, safety and security
- Natural light and window orientation
4. Style, Colour and Hardware
Choose:
- Opening direction and fixed sections
- Internal and external frame colours
- Glazing bars or decorative details
- Handles and security hardware
- Window boards and finishing trims
5. Professional Survey and Installation
Approximate measurements are useful for an initial enquiry, but manufacturing dimensions should be confirmed through an appropriate survey to reduce the risk of an incorrect fit.
We assess the opening, product limits, access and finishing requirements before the order is approved.
How Much Do Custom Made Windows Cost?
There is no single price because every custom window can have different dimensions, materials and performance requirements.
Cost depends on:
- Frame material and window dimensions
- Opening configuration
- Double or triple glazing
- Glass type and thickness
- Frame colour, finish and hardware
- Special shapes and structural requirements
- Installation access and removal of existing windows
- Finishing and repair work
An unusually shaped window will generally cost more than a rectangular unit of similar size because it requires more specialised design and manufacturing.
For an accurate figure, request a quotation based on confirmed measurements and the preferred specification.
Our window replacement services in Dublin include professional removal, fitting, and finishing for premium Aluclad systems.
Custom Window Materials Comparison
| Feature | uPVC | Aluminium | Timber | AluClad |
|---|---|---|---|---|
| Typical positioning | Cost-effective | Premium | Premium | Premium |
| Frame appearance | Versatile | Slim and modern | Natural and traditional | Timber inside, aluminium outside |
| Maintenance | Low | Very low | Regular care | Low externally |
| Large panes | Suitable within system limits | Excellent | Project dependent | Very good |
| Special shapes | Available | Excellent flexibility | Highly versatile | Available within system limits |
| Best suited to | Replacement and renovation | Modern homes and extensions | Period and character properties | Premium renovations and new builds |
No material is best for every project. The correct choice depends on the dimensions, structural requirements, architectural style, maintenance expectations and budget.
We can compare practical options after reviewing the opening, drawings or site photographs.
Special-Shaped and Unusually Sized Windows
Custom manufacture can accommodate architectural features such as:
- Arched windows
- Circular or porthole windows
- Triangular and trapezoid windows
- Angled gable windows
- Tall and narrow windows
- Large fixed picture windows
- Combined fixed and opening sections
Feasibility depends on the frame system, glass weight and structural requirements. Some complex shapes are available only as fixed windows, while others can include a separate opening section.
Custom Window Colours and Finishes
Coordinate your bespoke windows with the exterior, interior décor or existing joinery. Options vary by frame material and can include white, black, grey, wood effects, dual-colour frames and selected RAL colours.
Our Custom Window Process
Step 1 – Enquiry & Site Survey
Share photographs, approximate dimensions and design ideas. We assess and measure the openings.
Step 2 – Select the Specification
Choose the material, style, colour, glazing, opening configuration and hardware.
Step 3 – Quotation & Manufacturing
Approve the specification and quotation before the windows are manufactured to size.
Step 4 – Professional Installation
Existing units are removed where required before the new frames are fitted, levelled, sealed and finished.
Lead times vary according to the material, colour, glass and complexity. We provide an expected schedule with the quotation.
Made-to-Measure Double and Triple Glazed Windows
Custom windows can be specified with double or triple glazing, depending on the selected frame system and property requirements.
The complete window specification should consider:
- Thermal insulation
- Solar gain and window orientation
- External noise and acoustic performance
- Privacy and safety glass
- Security and natural light
- Ventilation requirements
The number of panes alone does not determine performance. Frame construction, glass coatings, seals, ventilation and installation quality all contribute.
Why Choose Expert Windows?
- Custom windows measured for the property
- uPVC, aluminium, timber and AluClad options
- Double and triple glazing
- Traditional and contemporary designs
- Special-shaped and unusually sized windows
- Professional replacement and new-build installation
- Clear specification-based quotations
- Advice on materials, colours and glazing
Custom Made Windows: Frequently Asked Questions
Windows can be manufactured in a wide range of custom sizes, but every frame and glass system has minimum and maximum dimensions. Very large panes or opening sections may require another material, added support or a revised configuration.
They can cost more than basic standard-sized windows, especially where the design includes an unusual shape, colour or glazing specification. Accurate manufacture can avoid unnecessary alterations to the existing opening.
In many cases, a new design can retain similar proportions, opening sections, colours and decorative features. The closest available match depends on the original window and chosen replacement material.
We offer made-to-measure options in uPVC, aluminium, timber and AluClad. The right material depends on the design, dimensions, appearance, maintenance requirements and budget.
Many custom window systems can accommodate triple glazing. Suitability depends on the frame system, unit size and total glass weight.
Yes. Options can include arched, circular, triangular, angled and other special-shaped windows. Some complex shapes may be available only as fixed units.
Yes. Older properties often require made-to-measure windows because openings vary in size. Protected structures or conservation areas may require approval before materials, proportions or appearance are changed.
Lead times depend on the material, colour, glass and complexity. Special shapes and non-standard finishes can take longer than conventional rectangular windows. We provide an expected timeframe with the quotation.
Approximate measurements and photographs are useful for an initial enquiry, but final manufacturing dimensions should be confirmed through an appropriate survey.
Request a Custom Window Quotation
Tell us the approximate dimensions, preferred material and any special shape, colour or glazing requirements. We will help you select a practical made-to-measure solution.
Real Feedback from Our Customers
Contact Details
Mail us at:
info@expertwindows.ie
Call us at:
01-233-6092
087-363-9977
Find us at:
Expert Windows & Doors Dublin
UNIT 3, 4 John F Kennedy Park, John F Kennedy Industrial Estate, Dublin 12, D12 FR82
Open Hours:
Monday- Thursday 8AM-5PM
Friday 8AM-4PM
Saturday 9AM-5PM