South West Dublin
13 areasTallaght, Lucan, Clondalkin and the M50 corridor — free survey, booked for the earliest available slot.
Custom-made spec, 30-year lifespan, multi-point security and A-rated U-values from 0.8 W/m²K — with a written 10-year workmanship guarantee, our own employed fitters, and Owen on the phone within 24 hours.
This is what we put in writing on every quote. No upsells, no deposits, no subcontractors.
U-value W/m²K
From, on triple-glazed solutions.
Workmanship
Written guarantee on every install.
Door locking
Multi-point on composite doors.
SEAI grant max
We're an SEAI registered installer.
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
Most installers compete on price. We compete on these four. Every quote we send out states the spec for each pillar in writing — the U-value, the locking points, the warranty in years, the colour code. So you can compare like-for-like against any other quote without guessing.
We don’t sell off-the-shelf windows. Every order is custom-manufactured to the exact opening size measured on your survey, in the colour, glazing pattern and operation style you specify. The quote is the price — no “unfortunately your opening doesn’t fit our standard size” surprises on installation day.
Quality uPVC windows fitted by our own employed team realistically perform for 30 years — frame integrity, hinge action, seal compression, all of it. Every install carries a written 10-year workmanship guarantee from Airtight, on top of the manufacturer’s warranty on the unit itself (10–15 years on windows, 12 years on composite doors).
Front doors are the most-targeted entry point in Irish burglary statistics. Every window and door we fit ships with the security spec that insurers increasingly ask for at renewal — multi-point locking, anti-snap cylinders, laminated glass on glazed sections, and child restrictors on all opening windows as standard.
Lower U-value = less heat lost through the window = lower heating bill. Our windows hit U-values from 0.8 W/m²K on triple-glazed solutions and 1.2–1.4 W/m²K on double glazing. Every spec is well inside the SEAI grant threshold of 1.4 W/m²K, with independent certification included on every install.
The small commitments that add up to a stress-free install. None of these are upsells — they’re what every Airtight job includes by default.
No subcontractors. The same crew that quoted is the crew that fits.
Owen replies within 24 hours and books your survey for the next available slot.
Pay on installation. No upfront deposits, no payment plan paperwork.
Internal plastering and external sealing finished before we leave site.
Required for the €5,600 grant. Our registration number on every quote.
Real Dublin, Kildare and Wicklow homes you can drive past before signing.
Every spec on this page is documented on every Airtight quote: U-value, locking points, warranty years, colour code, lead time. Owen confirms eligibility for the SEAI grant on the survey before quoting.
5.0 ★ from verified Google reviews · 23 years installing across Ireland
Local installer with a 23-year track record across 26 towns and suburbs. Owen responds within 24 hours and arranges free surveys for the earliest available appointment.
Tallaght, Lucan, Clondalkin and the M50 corridor — free survey, booked for the earliest available slot.
Bray, Greystones and the East Wicklow coast — coastal-spec uPVC available.
Naas, Newbridge, Maynooth — North Kildare commuter-belt specialists.
Don’t see your area? Give us a call — we cover most of Dublin, Kildare and Wicklow.
Honest buyer's guides and SEAI grant updates from Owen and the Airtight team.
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 articleBuyer’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 | Terms & Conditions | Powered by Webjuice
Registered in Ireland No: 374112 | VAT No: IE 6394112P