Small (600mm x 900mm): EUR600-EUR750 + VAT installed
Medium (1200mm x 1200mm): EUR850-EUR1,000 + VAT installed
Large (1500mm x 1400mm): EUR1,100-EUR1,300 + VAT installed
SEAI Grant 2026: Up to €5,600 off A-rated windows & doors · Call 01 822 8982 See grant details →
Home › Casement Windows Dublin
Side-hinged casement windows are the most popular choice for Dublin homes because they open fully for maximum ventilation, critical during humid Irish summers. Our uPVC casement range is A-rated double or triple glazed, includes multi-point locking as standard, and starts from €600 + VAT per window supplied and fitted.
We have been fitting casement windows across Dublin and the greater Leinster area for 23 years. Our own employed fitters, never subcontractors, carry out every installation. Owen responds within 24 hours to discuss your project and arrange the next available survey slot.
60 seconds · No phone calls until you’re ready
SEAI Registered
Government-registered grant contractor since 2018
A-Rated Energy
BFRC A++ certified glazing as standard
PAS24 Secure
Multi-point locks · Garda-recognised security spec
23 Years · 5,247 Homes
Family-owned since 2003 · Dublin, Kildare, Wicklow



Every casement window we install uses 28mm argon-filled double glazing as standard (A-rated), with 42mm triple glazing available for north-facing rooms or coastal locations. Our multi-chambered uPVC frames trap insulating air, while Low-E glass coating reduces heat loss by up to 40% compared to older single-glazed windows.
Triple glazing eliminates condensation in poorly-heated bedrooms and cuts heating costs by an average of EUR300-EUR450 annually. All units exceed Irish Building Regulations Part L and are certified A-rated by NSAI.
Available in white uPVC (from EUR600 + VAT installed), anthracite grey (most popular in Dublin 4, 6, 8), and rosewood finishes.
Most Dublin casement window projects complete in 1-2 days for standard homes (6-8 windows). Here's our process:
We measure your existing windows, discuss double vs triple glazing options, and explain colour choices. You'll receive your itemised quote within 24 hours by email.
Every window is custom-made to your exact specifications in Ireland, no UK imports, tighter quality control.
Our Dublin-based fitters arrive at 8:30am, remove old windows, install new casements, and complete all plaster/sill repairs. Full cleanup included. We've installed across Ranelagh, Drumcondra, Rathmines, and Foxfield Park with minimal disruption to homeowners.
Same-day service available for emergency window replacements (broken glass, failed seals).
When it comes to casement windows, there are a lot of choices available. Which one fits your home the best? uPVC casement windows are a great choice for people who want security and style. They're resistant to weathering, which means they will last longer than other types of window glass. Our range includes Sliding and Fixed casements to find the perfect casement windows for your home.
SEAI eligible
SEAI eligible
SEAI eligible
SEAI eligible
SEAI eligible
SEAI eligible
Small (600mm x 900mm): EUR600-EUR750 + VAT installed
Medium (1200mm x 1200mm): EUR850-EUR1,000 + VAT installed
Large (1500mm x 1400mm): EUR1,100-EUR1,300 + VAT installed
Add EUR150-EUR200 per window
Add EUR200-EUR300 per window (recommended for north-facing rooms, coastal homes)
Dublin semi-detached (8 windows): EUR6,000-EUR8,500 + VAT fully installed including old window removal, plaster repairs, cleanup.
White, Cream, Rosewood, Mahogany, Golden Oak (standard pricing)
Anthracite Grey, Agate Grey, Black (most popular in Dublin 4, 6, 8)
Dual-colour option: White interior with anthracite exterior (EUR100 upcharge)
Free itemised quotes provided after home survey.
We provide free home surveys and installation across all Dublin postcodes:
D1, D3, D5, D7, D9, D11, D13, D15, D17 (Drumcondra, Santry, Glasnevin, Clontarf, Raheny)
D2, D4, D6, D8, D12, D14, D16, D18 (Ranelagh, Rathmines, Rathgar, Terenure, Dundrum)
Swords, Malahide, Clondalkin, Tallaght, Lucan, Balbriggan, Foxfield Park
Free site visits typically scheduled within 3-5 working days. Same-day emergency glass replacement available for broken windows.
Casement windows are a great option for people who want to increase ventilation and light while keeping the inside of the home cool. Several types of casement windows meet your needs, so be sure to choose the right one for your home.
Every casement window includes:
Casement windows may be the best option for your home for a variety of factors. Not only do they provide an elegant and stylish look, but they also reduce sound interference. This is perfect if you live in a noisy environment or want to enjoy peaceful sleep without being disturbed by noise from outside.
Casement windows allow more natural light and ventilation, saving energy costs over time. In addition, casement windows can also be used as ventilation devices during hot summer months. It becomes more habitable and comfortable by allowing fresh air and natural light into the room.
Casement windows are easy to clean, open the window and use a hose to spray water and add soap to the glass until it is clean. Later wait for it to dry in the open air and clean it with a dry towel.
Compare options, costs and timelines. Owen responds within 24 hours and arranges the next available survey slot.
Most Dublin homes (6-8 windows) are completed in 1-2 consecutive days. Larger projects with 12+ windows take 2-3 days. Our team arrives at 8:30am, works continuously, and completes all cleanup before leaving. We've installed across Ranelagh, Drumcondra, and Rathmines with minimal disruption — customers can stay home during installation.
Yes — specifically designed for Ireland's damp, windy weather. Our 28mm double glazing eliminates condensation (major problem in Dublin's humidity), while airtight seals withstand coastal winds. We recommend triple glazing (42mm) for north-facing bedrooms (poor natural heat), coastal areas (Malahide, Howth, Clontarf), and homes near Dublin Airport (noise reduction). All units exceed Irish Building Regulations Part L for thermal performance.
Double Glazing (28mm): Two panes of glass with 16mm argon gas gap. A-rated. Reduces heat loss by 40% vs single glazing. Cost: €600-€1,000 per window installed. Triple Glazing (42mm): Three panes with two 14mm argon gas gaps. A++ rated. Reduces heat loss by 60% vs single glazing. Eliminates condensation in cold rooms. Cost: €900-€1,300 per window installed. Dublin recommendation: Double glazing sufficient for living rooms, kitchens. Triple glazing recommended for north-facing bedrooms, bathrooms, and coastal homes.
Budget: €600-€750 per window (white uPVC, double glazed, small size). Mid-range: €900-€1,100 per window (anthracite grey, double glazed, standard size). Premium: €1,200-€1,500 per window (triple glazed, large size, custom colour). Average full home: Dublin semi-detached (8 windows) = €6,000-€8,500 + VAT installed including old window removal, plaster repairs, and cleanup. Owen responds within 24 hours and itemised quotes are provided after home survey.
10-year sealed glass unit guarantee (no condensation between panes), 10-year hardware guarantee (Yale locks, hinges, handles), 10-year uPVC frame guarantee (no warping, discolouration), 2-year installation workmanship guarantee. Our Dublin-based service team responds within 48 hours for warranty claims — no outsourcing to UK call centres. All parts stocked locally in Parkwest.
5.0 ★ from verified Google reviews · 23 years installing across Ireland
Honest guides from our installers — comparison articles, buyer’s checklists and SEAI grant tips.
SEAI grantStep-by-step 2026 guide to applying for the SEAI windows & doors grant — who applies (you, not the contractor), the SEAI online portal, post-works BER, and the realistic 3–4 month timeline from quote to payment.
Read article
SEAI grantA 5-question eligibility check for the 2026 SEAI windows & doors grant — pre-2011 home, insulation, U-value, plus the special cases (pensioners, rentals, listed buildings) the official SEAI page doesn’t spell out.
Read article
Buyer’s guideSide-by-side comparison of uPVC and composite doors for Irish homes — real prices (€900–€2,400 + VAT), U-values, security ratings, lifespans, and exactly which one suits the front and back doors of a typical Dublin semi.
Read articleOur certified installer will visit your home, measure precisely, explain your options, and provide a detailed quote-all in about 30 minutes. No pressure, no obligation, no pushy sales tactics. Just honest advice from Dublin's most trusted window experts.
Schedule Your Free Consultation© Copyright 2026 Airtight Window System Ltd. | Privacy Policy | Cookie settings | Terms & Conditions | Powered by Webjuice
Registered in Ireland No: 374112 | VAT No: IE 6394112P