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Modern double-storey house with a blend of brick and cream facade, featuring a dark grey front door and manicured garden.

Smyth Window Systems have been supplying and installing windows and doors throughout Northern Ireland since 2010.

How we get your project moving

Send plans or details

Share drawings, sizes or project notes and we'll shape the quote around them.

Choose the specification

We talk through styles, glazing, colours and hardware before details are signed off.

Book fitting or delivery

Once confirmed, we arrange manufacture, delivery and installation to suit the job.

Windows, doors and trade supply

Close-up of a window with white frames and curtains

Aluminium Windows

Slim aluminium windows with clean profiles, flexible glazing options and modern finishes for homes and trade projects.

A high quality white double glazed sash window from a new home which has been blanked out

uPVC Sliding Sash Windows

Traditional sash styling with practical uPVC frames, flexible glazing options and finishes suited to period and modern properties.

Living room with sliding glass door to balcony

uPVC Patio Doors

Sliding patio doors with generous glazing, practical access and a range of finishes for connecting your home with the garden.

Glass doors to holding area in animal shelter

Aluminium Lift and Slide

Large glazed openings with slim aluminium frames, smooth operation and a contemporary finish for homes and commercial spaces.

Exterior of red brick terraced house with a black front door on a main road

Casement Windows

Versatile casement windows with practical opening styles, flexible glazing options and finishes to suit different properties.

Modern grey front door with glass panel, bordered by a small window and shrubs on a white plastered building exterior.

uPVC Doors

Secure uPVC doors for front, back and stable-door use, with colour choice, internal glazing and welded frames.

French doors open to a stone patio with lush greenery in a garden setting.

French Doors

French doors give you paired access, good ventilation and a balanced glazed look, with open-in or open-out options.

Modern grey front door with glass panels, framed by a brick and white facade, alongside neatly trimmed hedges.

Aluminium Doors

Aluminium doors give you slim frames, larger glazed areas and a tidy modern finish for home or commercial use.

Man in a navy jumper inspecting or installing a black front door with a silver handle.

Composite Doors

Composite doors with strong security, triple-glazed glass and a 0.205 U-value for a warmer, smarter entrance.

A worker in safety gear installs a sliding glass door opening onto a patio with a garden view.

Bifold Doors

Bifold doors can clear up to 90% of the opening, giving a broader link between inside rooms and the garden.

Large glass windows secured on pallets inside a warehouse with an open loading bay.

Trade uPVC Window and Door Supply

Supply-only trade windows and doors with frames, glass and finishes coordinated as one order for smoother site work.

Help for homes, self-builds and trade jobs

When windows leak heat, doors feel tired, or a build reaches the stage where every opening needs sorted, you want clear advice and neat fitting, not three suppliers and a lot of shrugging. With Smyth Window Systems, you can choose full supply and installation or a supply-only trade package to suit the job. We handle new-build installations, replacement windows, uPVC systems, triple glazing, sliding sash and casement styles, along with composite, uPVC, aluminium, bifold and French doors for homes, builders and commercial projects.

Close-up of a modern grey window frame against a white wall, with trees visible outside.

What you get with Smyth Window Systems

Safer everyday use

Internally glazed, fully welded frames with multi-point locking help protect your home.

Less chasing around

Supply-only, fitted and trade delivery routes keep one project from turning into three.

Quicker aftercare

Post-fitting snags are checked on site within 1 to 2 days when problems arise.

Straight answers, careful work and proper backup

A job like this has to look right, open properly and stay that way. Over 16 years in the window and building trade, we've learned that good measuring, solid components and tidy finishing matter just as much as the glass itself. Choose Smyth Window Systems when you want free quotes from plans or site visits, examples of completed work to compare, and support across Northern Ireland that does not disappear the moment the last unit is fitted.

Jordan Ritchie

https://www.google.com/search?q=Smyth+Window+Systems+Limited&rlz=1C1GCEA_enGB1178GB1178&sourceid=chrome&ie=UTF-8#lrd=0x4860f04088e629bd:0x514f3bf0402b91fc,1,,,,

Front and back door replaced with ease competitive pricing and job done to a high standard.

Talk through your windows and doors

Call us to discuss your project, ask for a free quote or plan a showroom visit when it suits you.

Man examining architectural plans next to a large window with a view of greenery outside.
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