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

#1 Rated Double Glazing Installation Service in Dublin

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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Why Choose Double Glazed Windows for Your Dublin Home?

Dublin’s damp climate demands superior insulation. Our A-rated double glazed windows deliver:

Energy Savings

  • Reduce heating costs by 30% (average €540/year for 3-bed semi)
  • U-value: 1.4 W/m²K (meets 2025 Building Regulations Part L)
  • Argon gas-filled cavities for maximum heat retention
  • Payback period: 7-9 years

Noise Reduction

  • Block 30-35dB of external noise (up to 40dB with triple glazing)
  • Perfect for homes near N11, M50, LUAS lines, or Dublin Airport
  • Transforms busy road (70dB) to quiet conversation level (35dB)

Condensation Control

  • Eliminates morning window condensation
  • Prevents mold and damp issues common in older Dublin homes
  • Maintains consistent temperature across all rooms
 

How Long Does Double Glazed Window Installation Take in Dublin? ​

Day 1: Free Home Survey & Quote (24 Hours)

Call 01 960 9632 or book online. We measure your windows, discuss style options, and email a detailed quote the same day. Visit our showroom to see samples.

Order Confirmation & Manufacturing (3-4 Weeks) 

Once you approve the quote, we place your custom order with Irish suppliers. No deposit required. We’ll send manufacturing updates via text.

Pre-Installation Preparation (1 Week Before)

We confirm your installation date and provide a checklist: clear window areas of furniture (1m clearance), arrange van parking, protect flooring.

Day 2-3: Professional Installation (1-2 Days)

Our certified team installs your windows, cleans up all debris, tests operation, and issues your 10-year guarantee certificate and SEAI documentation.

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Benefits Of Double Glazed Windows

As the name suggests, double, glazed windows are two-layered windows that can be more energy efficient and highly responsible for saving up sums of electric bills. As more and more people are into methods that are beneficial for them in the long run, they try to discover things that will benefit their house and light on pockets too. With the added benefit of minimizing noise, double-glazed windows are an ideal energy-efficient choice.

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 Dublin Homeowners Choose Airtight

23 Years Serving Dublin (Not a Franchise, Not a Lead-Gen Site)

Family-run business established in 2001. Permanent Dublin premises with showroom. Not a UK franchise operating in Ireland. Not a directory passing your details to subcontractors.

What this means for you:

  • Same team from quote to installation
  • Accountable to Dublin community (5,247 local installations)
  • We answer our phones (01 960 9632) — no call centers
  • We’ll still be here in 10 years to honor your guarantee

Track record:

  • 5,247 Dublin installations since 2001
  • Zero unclaimed warranties
  • Family business (not private equity-owned)
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Where We Install Double Glazed Window in Dublin

We install throughout County Dublin + surrounding areas: 

North Dublin 

Swords, Malahide, Howth, Clontarf, Raheny, Artane, Coolock, Santry, Baldoyle, Portmarnock, Finglas, Blanchardstown 

South Dublin

Dún Laoghaire, Blackrock, Dalkey, Stillorgan, Dundrum, Rathfarnham, Tallaght, Ballinteer, Cabinteely, Shankill, Bray

West Dublin

Lucan, Clondalkin, Castleknock, Palmerstown, Ballyfermot, Chapelizod

Dublin City

All postcodes (Dublin 1-24)

Outside Dublin

County Meath, County Kildare, North County Wicklow (call to confirm)


Response time: Free quote within 24 hours | Installation within 5 weeks 

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Types of Double Glazed Windows

Double glazing is becoming increasingly popular, not just because of its energy-saving benefits but because of its different features.

Casement windows

If you are looking for a double-glazed window that offers more privacy and ventilation, casement windows are the perfect option. They come in a range of different styles including wooden and metal frames with fixed or adjustable panes. Depending on your needs, you can choose either window that opens from the inside (for security) or outside (for air circulation).

Tilt and turn double glazing

If you’re looking for a new window that offers energy-saving features and the convenience of opening or closing it in seconds, then tilt and turning double glazing is your best bet. This system allows windows to be tilted up AND down, which makes it perfect for people who don’t have locks on their windows or those who live in apartments or houses where there are no locks.

Vertical Sliding

Do you ever find yourself longing to check on your property from anywhere in the world? Are you constantly encountering problems with intruders breaking into your house while you’re away? If so, then a vertical sliding window might be just what you need. These windows are perfect for people who always want an unobstructed view of their surroundings.

Georgian Bar

Georgian Bar windows are one of the most popular double-glazed windows available today. They come in various styles and colors, providing an elegant look to any home. Installation is simple; ensure you have the correct measurements before starting! Additionally, double glazing is a great way to reduce noise and heat coming into your home.

Your house, Our answers

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

?

Yes. All our A-rated double glazed windows qualify for SEAI Better Energy Homes grants.

Grant amounts by home type:

  • Mid-terrace homes: Up to €5,000
  • Semi-detached homes: Up to €6,500
  • Detached homes: Up to €8,000

Eligibility requirements:

  • Home built before 2011
  • Current BER rating of C3 or lower
  • Windows must achieve minimum U-value 1.4 W/m²K (all our windows meet this)
  • Must use SEAI-registered contractor (we are registered)

Our transparent pricing (supply + professional installation included):

Window TypePrice Per WindowTypical 3-Bed Semi (10 windows)
Casement (most popular)€600+VAT€6,000-€8,000
French Windows€750+VAT€7,500-€9,500
Flush Sash (modern)€900+VAT€9,000-€11,000
Sliding Sash (period)€950+VAT€9,500-€12,000
Tilt & Turn (apartments)€700+VAT€7,000-€9,000
Triple Glazing Upgrade+€150-€200 per window+€1,500-€2,000 total

Most homes: NO (exempt development under Planning & Development Regulations Part 1, Class 3)

✅ You DON’T need planning permission if:

  • Like-for-like replacement (same size, similar style as existing windows)
  • Standard residential property outside conservation area
  • Not changing window size or position in wall opening
  • Not a protected structure (not listed/Georgian)
  • Not altering external appearance dramatically (e.g., keeping same color/style)

❌ You DO need planning permission if:

Protected structures:

  • Georgian buildings (built pre-1830)
  • Victorian buildings (built 1830-1901) in conservation zones
  • Any building on Record of Protected Structures (RPS)
  • Buildings within Architectural Conservation Areas (ACAs)

Material-specific lifespans:

uPVC frames:

  • Standard locations: 25-30 years
  • Coastal Dublin: 20-25 years (use marine-grade uPVC)
  • Degradation signs: Yellowing (after 15+ years), surface chalking, brittleness

Aluminium frames:

  • All locations: 40+ years (highly durable)
  • Coastal Dublin: 35-40 years (salt-resistant when powder-coated)
  • Degradation signs: Minimal (powder coating may fade after 20 years)

Glass units (double/triple glazing):

  • Seal lifespan: 20-25 years
  • Argon gas: Loses 5-10% over 20 years (minimal performance impact)
  • Failure rate: <2% within first 10 years for quality units

Hardware (handles, hinges, locks):

  • Lifespan: 15-20 years with lubrication
  • Replacement cost: €40-€80 per window (handles/locks)
  • Availability: Standard hardware still available after 20+ years

Complete timeline: 4-6 weeks from order to completion

Yes—this is our MOST RECOMMENDED approach for budget-conscious Dublin homeowners.

Strategic mixing saves €1,500-€2,000 vs. all triple glazing, with less than 5% energy performance loss.

Both are excellent for Dublin homes—choice depends on your specific property type, location, and budget.

 

Yes—100% included in every quote at no extra charge.

We handle complete removal, disposal, and cleanup. You don’t lift a finger (or pay extra).

Every Airtight installation includes comprehensive 10-year guarantee backed by €2,000,000 public liability insurance.

Not 1 year. Not 5 years. Full 10 years covering both products and installation workmanship.

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