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Sliding sash windows are the defining feature of Georgian and Victorian terraces across Rathmines, Ranelagh, and the Northside inner city. Our uPVC sliding sash range replicates the slim glazing bars and vertical travel of the originals, while delivering A-rated double glazing performance and PAS24 security that single-glazed timber units cannot match.
We specialise in period Dublin properties and can advise on conservation area requirements before any work begins. With 23 years of experience and more than 5,247 installations completed, our own employed fitters handle every job. Owen responds within 24 hours: no obligation, no pushy follow-ups.
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
Our uPVC sliding sash windows replicate authentic Victorian and Georgian aesthetics while delivering modern A-rated energy performance — the ideal solution for Dublin's period properties.
Georgian bars, sash horns, and traditional proportions meet Dublin City Council standards for Protected Structures
Argon-filled double glazing or triple glazing options reduce heating bills by up to 40%
Both sashes tilt inward for safe, easy cleaning from inside — no ladders required
Unlike timber, uPVC won't rot, warp, or require repainting
White, Cream, Anthracite Grey, Agate Grey, Light Oak, Black — including dual-colour finishes for conservation areas
Multi-point locking systems with internally glazed units
Made to fit your exact opening dimensions — essential for Dublin's period properties where no two window openings are identical
10-year insurance-backed guarantee on frames and hardware
We make upgrading to energy-efficient sliding sash windows straightforward with our proven 4-step process:
Owen visits your Dublin home to measure windows, discuss style options (Georgian bars, colours, glazing), and assess any conservation area requirements. No-obligation quote provided same day.
Your windows are custom-built to exact measurements at our suppliers' facilities. We'll confirm your final specifications before production begins.
Our experienced team installs your new sliding sash windows with minimal disruption. Most Dublin homeowners stay home during installation. We protect floors, remove old windows, fit new frames, and clean up completely.
We walk through every window with you, demonstrate the tilt-in cleaning mechanism, and provide care instructions plus your 10-year warranty certificate.
They are suitable for replacing existing timber sash sliders in period buildings while still appealing to new builds seeking to capture a traditional feel. Manufactured from uPVC, they are strong and will not rot, warp or require repainting ensuring that they retain their colour and shape throughout the years with minimum maintenance. The traditional style can be enhanced by adding Georgian or Astrical bars and decorative sash horns. They are available in White, Light Oak, Cream and Black.
SEAI eligible
SEAI eligible
SEAI eligible
SEAI eligible
SEAI eligible
SEAI eligible
Since 2002, we've completed 5,247 window and door installations throughout Dublin — from Georgian terraces requiring conservation area approval to modern homes seeking period character.
We know Dublin's period properties inside-out — tight sash pockets, stone reveals, uneven openings in Victorian homes. Our team has solved every installation challenge.
Owen replies within one working day, then prepares a detailed quote after survey, including technical specifications and conservation area guidance where needed.
Every window is made to your exact measurements — essential for Dublin's older properties where standard sizes rarely fit.
We work regularly with Dublin City Council conservation officers to ensure compliance in Protected Structures.
your Dublin home is protected throughout the project.
Pay nothing until installation is complete and you're satisfied.
Our sliding sash windows exceed Dublin home insurance security standards with multi-layered protection:
Reinforced uPVC chambers with steel or aluminium reinforcement, multi-point locking systems (minimum 5 lock points per window), internally glazed units — cannot be removed from outside, tested to PAS 24 security standards
Optional tilt restrictors limit opening to 100mm, prevents children climbing out while maintaining ventilation, complies with Building Regulations Part K (fall protection)
Keyed locks for additional security in vacant properties, laminated glass for anti-smash protection (ground floor windows). All hardware manufactured in the UK/EU to highest quality standards with corrosion-resistant finishes. Your 10-year warranty covers all security components.
Sliding sash windows remain the most authentic choice for Dublin's Georgian and Victorian properties, combining period aesthetics with modern performance.
Dublin's terraced homes were built with vertical sliding sash windows from the 1700s onwards. Modern uPVC versions replicate the exact proportions, sightlines, and detailing of original timber windows — essential for conservation areas and Protected Structures across Dublin 2, 4, 6, and 8.
Original single-glazed timber sash windows account for up to 25% of heat loss in Dublin period properties. Our A-rated uPVC sash windows with Argon-filled double glazing reduce this dramatically: U-value of 1.2 W/m²K (vs. 5.0+ for original timber), cuts heating bills by up to 40%, eliminates draughts while maintaining period character.
Unlike timber sash windows requiring painting every 3-5 years, uPVC frames never rot, warp, or swell. Retain colour and finish for 20+ years. Require only occasional cleaning with soap and water. No annual maintenance costs.
Both sashes tilt inward for safe cleaning from inside — crucial for Dublin's upper-floor period properties where external access is difficult or impossible.
Compare options, costs and timelines. Owen responds within 24 hours and arranges the next available survey slot.
From €950+VAT for standard white uPVC double-glazed sliding sash windows. Request your exact quote — Owen will visit your Dublin home for free measurements and provide a detailed breakdown within 24 hours. No deposits required until installation.
Our modern uPVC windows are designed for convenience, featuring sashes that both tilt inward for safe, easy cleaning from inside your home. Simply unlock the tilt latches on each sash, tilt the top sash inward to reach the exterior glass while standing safely inside, then repeat for the bottom sash. We recommend using warm soapy water and a microfiber cloth, avoiding any abrasive cleaners on the uPVC frames. This system completely removes the need for ladders, making it an ideal solution for Dublin's multi-story period properties.
Every Airtight sliding sash window installation is backed by comprehensive protection. We provide a 10-year insurance-backed guarantee covering uPVC frames, hardware, and all locking mechanisms, alongside a 10-year manufacturer's glass seal guarantee against condensation forming between panes. We also offer a lifetime guarantee against discolouration on white uPVC and a 20+ year guarantee on coloured finishes.
Yes, our uPVC sliding sash windows are specifically engineered to replicate Victorian and Georgian aesthetics, making them suitable for many of Dublin's conservation areas and Protected Structures. These windows feature authentic sash horn profiles, Georgian glazing bars sealed within the units, and traditional proportions that match original timber windows. With slim 67mm frame depths and period-appropriate colour finishes like Cream or Light Oak, our products respect the heritage of areas like Merrion Square and Fitzwilliam Square. Owen frequently works with local conservation officers and can provide the detailed specifications required for planning applications.
The timeline for a typical Dublin home begins with Owen responding within 24 hours and booking the earliest available survey slot. Once ordered, your custom-made windows are manufactured over a period of 4 to 6 weeks. The actual installation usually takes just 1 to 2 days for an average semi-detached home consisting of 6 to 8 windows. We work room by room to minimise disruption, protecting your furniture and floors throughout the process.
We provide expert installation services throughout the entire Dublin region and its surrounding counties, including Kildare, Meath, and Wicklow. In South Dublin, we frequently work in Rathmines, Ranelagh, Terenure, and Blackrock, while our North Dublin projects often take us to Clontarf, Drumcondra, and Castleknock. Whether you own a Georgian terrace in Dublin 2 or 4, or a period property in Raheny, Owen's 23 years of local experience ensures he understands the specific architectural needs of your neighbourhood.
Yes, our sliding sash frames are designed to accommodate both double and triple glazing options. Triple glazing offers approximately 25% better energy efficiency than double glazing and provides superior noise reduction, which is a major benefit for homes located near busy Dublin roads. While triple glazing adds roughly €150–€200 per window, many homeowners find it to be a worthwhile investment for north-facing reception rooms or bedrooms where maximum thermal performance and quiet are priorities.
While we specialise in the installation of new A-rated uPVC sliding sash windows rather than timber repairs, Airtight can assess the condition of your existing frames during a free survey. Full replacement is usually the most cost-effective long-term strategy if your timber frames show signs of rot, if single glazing is leading to high heating bills, or if the original cords and pulleys are failing. Modern uPVC sash windows offer significantly better energy efficiency and security than ageing timber, though we are happy to recommend specialist timber restoration partners if you prefer a refurbishment over a modern upgrade.
5.0 ★ from verified Google reviews · 23 years installing across Ireland
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