Premium Windows
& Doors for
Blanchardstown Homes
West Dublin’s go-to window and door company - we supply, deliver, and fit across Blanchardstown, Castleknock, Clonsilla, and the wider Dublin 15 area. No hard sell, just honest advice from people who know their stuff.
Get Your Free Quote
Ireland’s Leading Windows and Doors Installer
10,000+ Customers
Trusted across Dublin
10-Year Warranty
On every installation
ISO 9001:2015
Certified quality standards
SEAI Grants Available
We'll guide you through it
35% Off
Limited time offer
Why Blanchardstown Homeowners Choose Thermoglaze?
If you're looking for windows and doors in Blanchardstown, you've come to the right place. Thermoglaze has been fitting windows and doors across Dublin for years, and Dublin 15 is one of the areas we know best. From replacing tired old timber frames in Castleknock to fitting sliding patio doors on new-build extensions in Ongar, we handle every kind of job — big or small.
Our team lives and works in Dublin. We understand the housing stock here: the semi-detached estates from the 70s and 80s around Corduff and Hartstown, the newer developments in Hansfield and Tyrrelstown, and everything in between. That local knowledge means we can recommend the right product for your home without trying to upsell you on something you don't need.
OUR PRODUCTS
Windows & doors for every Blanchardstown property
Whether you own a 1970s semi-d near Blanchardstown Village, a starter home in Hansfield, or a detached property backing onto the Phoenix Park in Castleknock - we’ve fitted windows and doors in homes just like yours across Dublin 15 for years.
uPVC Windows
Low-maintenance, high-performance frames that keep heat in and noise out. A straight swap for old timber or early uPVC windows.
View rangeAluminium Windows
Slim frames, big glass areas, and a clean modern look. Ideal for extensions, new builds, and contemporary renovations.
View rangeAlu-Clad Windows
Timber on the inside for warmth, aluminium on the outside for weather protection. No painting, no sanding - just years of trouble-free performance.
View rangeComposite Front Doors
Good-looking, tough, and secure. Dozens of colours and panel styles to choose from. They don’t warp, fade, or rot.
View rangeBi-Fold & Patio Doors
Open up the back of your house to the garden. Wide openings, floor-to-ceiling glass, and proper weather seals when they’re closed.
View rangeFrench & Lift-Slide Doors
Classic double doors or smooth-sliding glass panels. Both options give you full-height views and solid insulation.
View rangeHow New Windows and Doors Save You Money in Blanchardstown
Badly fitting or outdated windows are one of the biggest sources of heat loss in any home. If your windows are more than 15 years old, chances are they're letting a lot of heat escape and that shows up directly on your gas or oil bill every winter.
Our A-rated windows use triple glazing and argon gas fills to trap heat inside your home. That means your boiler runs less, your rooms stay warmer for longer, and you save money month after month. Many of our Blanchardstown customers have told us their heating costs dropped noticeably after we replaced their windows.
Beyond energy savings, new windows and doors also make your home quieter, more secure, and better looking. If you live near the N3 or the Navan Road, you'll really appreciate the noise reduction that triple glazing brings.
Front Doors, Patio Doors and More for Blanchardstown Homes
We supply and fit every type of door you might need for your Blanchardstown home. Our composite front doors come in dozens of colours and styles, and they're built to resist warping, fading, and forced entry.
For rear access, our bi-fold doors, French doors and lift-and-slide doors are popular choices among Dublin 15 homeowners who want to open up their kitchen or living room to the garden.
If you're building an extension or converting a garage, talk to us about aluminium door systems. Their slim frames maximise glass area while creating a clean, contemporary look that complements modern homes.
Why Thermoglaze Swords
Local knowledge.
European quality.
A lot of homes around Blanchardstown were built in the 1970s and 1980s with timber or early uPVC windows that have long passed their best. Draughts creep in around the seals, condensation builds up between the panes, and your heating bill keeps climbing. If that sounds familiar, it’s time to talk to us. We’ve helped thousands of Dublin homeowners fix exactly these problems — and the difference a proper A-rated window makes is something you notice from day one.
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Our Swords showroom is 15 minutes away
Take the N2 north to Unit F2, Swords Enterprise Park, Feltrim Road. Walk around, open and close the windows and doors yourself, and ask our team anything — no appointment needed on weekdays..
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A-rated windows that actually cut your bills
We fit triple-glazed, argon-filled units that keep heat in and road noise from the N3 out. Most customers tell us they notice the difference in comfort within the first week.
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Pay monthly with humm finance
No need to save up a lump sum. Spread the cost over monthly payments that suit your budget and get the work done now, not next year.
across Dublin
every installation
on all products
stocks last
How It Works
From First Call to Finished Fit
Three steps. One local team. No hidden costs — and we're a phone call away whenever you need us.
Get a Free Quote
Ring us on 01 912 0600, fill in our online form, or walk into our Swords showroom.
Home Survey
We come out, measure everything properly, and go through the options with you face to face. No guesswork, no pressure.
Professional Fitting
Our own fitters do the work — no subcontractors. We leave your home clean and provide a 10-year warranty for complete peace of mind.
You Could Qualify for Government Funding
The SEAI Better Energy Homes scheme pays a portion of the cost when you upgrade to A-rated windows and doors. We’ll tell you straight away whether your home is likely to qualify and help you pick the right products.
Our brands
European manufacturers.
Thermoglaze expertise.
Every brand we carry has been chosen because it performs well in Irish weather conditions and meets the quality standards our customers expect.
Service Area
Serving Blanchardstown
and Surrounding Areas
Our Swords showroom on Feltrim Road is the closest Thermoglaze base for homeowners in Dublin 15 and West Dublin. We regularly fit windows and doors across all of these areas.
Common Questions
Before you visit
Most answers are below - or call 01 912 0600 and we'll answer in minutes.