• Over 23 year's in the Business
  • 5247 window and door installations
  • Fully Insured | Highest Quality
Rated 5 out of 5

Dublin's Victorian & Georgian Window Restoration Experts

Join 5247 Dublin homeowners who've cut their heating bills with our certified A-rated installations. Zero-hassle process, 24-hour quotes, and 23 years of proven results.

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What makes our sliding sash windows ideal for Dublin period homes?

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.

Key Features:

  • Conservation-approved styling: Georgian bars, sash horns, and traditional proportions meet Dublin City Council standards for Protected Structures

  • A-rated energy efficiency: Argon-filled double glazing or triple glazing options reduce heating bills by up to 40%

  • Tilt-in cleaning: Both sashes tilt inward for safe, easy cleaning from inside — no ladders required

  • Low maintenance: Unlike timber, uPVC won’t rot, warp, or require repainting

  • 12+ color options: White, Cream, Anthracite Grey, Agate Grey, Light Oak, Black — including dual-color finishes for conservation areas

  • Secure by design: Multi-point locking systems with internally glazed units

  • Sizing: Custom-made to fit your exact opening dimensions — essential for Dublin’s period properties where no two window openings are identical.

  • Warranty: 10-year insurance-backed guarantee on frames and hardware.

How does the sliding sash window installation process work in Dublin?

We make upgrading to energy-efficient sliding sash windows straightforward with our proven 4-step process:

1. Free Home Survey (24 Hours)

Owen visits your Dublin home to measure windows, discuss style options (Georgian bars, colors, glazing), and assess any conservation area requirements. No-obligation quote provided same day.

2. Manufacturing (4-6 Weeks)

Your windows are custom-built to exact measurements at our suppliers’ facilities. We’ll confirm your final specifications before production begins.

3. Professional Installation (1-2 Days)

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.

4. Final Inspection

We walk through every window with you, demonstrate the tilt-in cleaning mechanism, and provide care instructions plus your 10-year warranty certificate.

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Is Sliding Window A Smart Decision?

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.

All our windows

All our PVC Windows

White double french window on textured wall

French Windows

Transform your home with elegant French windows that open outwards to provide maximum fire escape, particularly suitable for narrow windows”. Having the two opening sashes also makes the window exteriors easier to clean from inside the room. A French window in white uPVC starts at €750 plus VAT.
French Windows
White framed sash windows on building exterior

Sliding Sash Windows

Preserve Dublin’s period charm with modern uPVC sliding sash windows that replicate Victorian and Georgian aesthetics while delivering “A” rated energy efficiency. Smooth vertical operation, tilt-in cleaning with options for double and triple glazing. 12+ colours available including Anthracite grey and Agate grey. From €950 plus VAT per window.
Sliding Sash Windows
Double glazed wooden flush sash window on brick wall

Flush Sash Windows

Achieve sleek, contemporary aesthetics with Flush Sash windows where the frame and sash sit perfectly level, designed to mimic modern aluclad windows but at a fraction of the cost. Triple glazed and double glazed solutions available in 20+ colour finishes with 6-point locking mechanisms as standard. From €900 plus VAT per window installed.
FLush Sash Windows
White framed Casement Window on red brick wall

Casement Windows

For many years, these have been the most popular uPVC window choice. The simplest way to improve energy efficiency, security and to transform the appearance of the home. Perfect for home and rental property renovations, the colour range has expanded greatly from older days when the offering was restricted to white PVC or brown PVC. “A” rated as standard in both double glazing and triple glazing. From €600 plus VAT installed.
Casement Windows
White framed sash windows on building exterior

Double Glazed Windows

Reduce your window heat loss by up to 40% with energy efficient “A” Rated double glazed windows whereby the glass units are Argon Gas filled with a Low E coating and a 10-year guarantee.
Double Glazed Windows
Double glazed wooden flush sash window on brick wall

Triple Glazed Windows

Achieve maximum energy savings with premium triple glazed windows, Ireland’s best defence against heat loss, condensation and noise. Triple glazing is 25% more energy efficient than double glazing saving money on heating costs while adding extra comfort to homes throughout the country. Particularly beneficial in the north facing aspect of houses which get little natural sunlight. In white uPVC, triple glazed window start from €750 plus VAT.
Triple Glazed Windows

Why choose Airtight for sliding sash windows in Dublin?

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.

What sets us apart:

Local expertise:

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.

24-hour quotes:

Owen provides detailed quotes within one working day, including technical specifications and conservation area guidance where needed.

Custom manufacturing:

Every window is made to your exact measurements — essential for Dublin’s older properties where standard sizes rarely fit.

Conservation area specialists:

We work regularly with Dublin City Council conservation officers to ensure compliance in Protected Structures.

Fully insured installations: 

Public liability and employer’s liability insurance — your Dublin home is protected throughout the project.

Zero-deposit policy: 

Pay nothing until installation is complete and you’re satisfied.

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How secure are modern uPVC sliding sash windows in Dublin?

Our sliding sash windows exceed Dublin home insurance security standards with multi-layered protection:

Frame Security:

  • Reinforced uPVC chambers with steel or aluminum 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

Child Safety Features:

  • Optional tilt restrictors limit opening to 100mm
  • Prevents children climbing out while maintaining ventilation
  • Complies with Building Regulations Part K (fall protection)

Additional Option:

  • Keyed locks for additional security in vacant properties
  • Laminated glass for anti-smash protection (ground floor windows)

 

All hardware is manufactured in the UK/EU to highest quality standards with corrosion-resistant finishes. Your 10-year warranty covers all security components.

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Why are sliding sash windows popular for Dublin period homes?

Sliding windows are an excellent choice for anyone looking for an updated or new look in their home. They come in many different styles and sizes, so they can be tailored to fit any home décor. Moreover, sliding windows are an excellent choice for anyone who wants to enjoy the outdoors without going outside. Sliding sash windows remain the most authentic choice for Dublin’s Georgian and Victorian properties, combining period aesthetics with modern performance.

Architectural Authenticity

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.

Energy Efficiency for Period Homes

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

Low Maintenance

Unlike timber sash windows requiring painting every 3-5 years, uPVC frames: 

  • Never rot, warp, or swell 
  • Retain color and finish for 20+ years 
  • Require only occasional cleaning with soap and water 
  • No annual maintenance costs

Easy Cleaning

Due to its nature, there are no complicated moving parts in a sliding window that other types of windows have. Both sashes tilt inward for safe cleaning from inside — crucial for Dublin’s upper-floor period properties where external access is difficult or impossible.

Your house, Our answers

Explore our products to learn more about your options and in addition receive a quote from us.

?

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. To clean them, simply unlock the tilt latches on each sash—a process we will demonstrate during your installation—and tilt the top sash inward to reach the exterior glass while standing safely inside. You then repeat the process 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 for your peace of mind. 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. Furthermore, we offer a lifetime guarantee against discoloration on white uPVC and a 20+ year guarantee on colored 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 color 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 a survey and quote provided within 24 hours of your initial enquiry. 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 minimize disruption, protecting your furniture and floors throughout the process. By the end of the day, your old windows will be removed and your new, fully functioning frames will be sealed, finished, and cleaned.

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 neighborhood.

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. Owen can advise you on the best configuration for your home’s orientation during your free survey.

While we specialize 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 aging timber, though we are happy to recommend specialist timber restoration partners if you prefer a refurbishment over a modern upgrade.

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