Window & Door Replacement Quotes in Ireland
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Old windows and doors are one of the biggest sources of heat loss and draughts in Irish homes. If you have single-glazed windows, original 1970s aluminium frames, or timber frames that have warped and no longer seal properly, you could be losing 20 to 30% of your home's heat through the glass and frames alone. Beyond energy loss, old windows bring noise, condensation between panes, difficulty opening and closing, and security concerns.
Modern A-rated double or triple-glazed windows with thermally broken frames transform a home's comfort, noise levels, and energy performance. The difference is noticeable immediately: rooms feel warmer, draughts disappear, outside noise drops dramatically, and condensation on the inside of the glass stops. For many homeowners, window replacement is the upgrade that makes the biggest day-to-day difference to how their home feels.
The three main frame materials in Ireland are uPVC (most popular and affordable), aluminium (sleek, slim profiles, popular in modern and contemporary homes), and timber (traditional appearance, best for period properties and conservation areas). Each has different cost, maintenance, and aesthetic characteristics. The right choice depends on your home's style, your budget, and whether you are in a conservation area with specific planning requirements.
Window replacement costs vary significantly between installers. The price difference between the cheapest and most expensive quote for the same house can easily be €3,000 to €5,000. This is not always about quality: some companies have higher overheads, some sell specific premium brands, and some include post-installation finishes (plastering, painting) while others do not. Comparing at least three detailed quotes is the best way to ensure fair value.
SEAI Grants May Be Available
Some window & door replacement work may qualify for SEAI grants. Visit HomeEnergyGuide.ie to check eligibility and amounts.
SEAI Grants May Apply
Some window & door replacement work qualifies for SEAI grants of up to €8,000 or more. Check eligibility and current grant amounts on our energy guide.
Check SEAI Grants on HomeEnergyGuide.ieHow Much Does Window & Door Replacement Cost in Ireland?
Typical pricing for window & door replacement services in Ireland (2026):
| Service | Typical Cost | Notes |
|---|---|---|
| Full house windows (3-bed semi) | €5,000 | €12,000 | Material, glazing type, number of windows |
| Composite front door | €1,200 | €2,500 | Style, security rating |
| Sliding patio door | €2,000 | €4,500 | Size, material |
Window costs depend on four main factors: the frame material (uPVC is cheapest, timber is most expensive), the glazing specification (double vs triple, low-E coatings, argon fill), the number and size of windows, and whether structural work is needed (widening or narrowing openings). A full replacement of all windows in a typical three-bed semi costs €5,000 to €8,000 in uPVC and €10,000 to €18,000 in aluminium. Front doors range from €1,500 to €4,000 depending on material and security specification. Dublin prices are typically 15-20% above the national average.
What to Expect: The Window & Door Replacement Process
- An installer surveys your home, measuring every window and door opening, checking the structural reveals, and discussing your preferences for material, colour, glazing, and hardware.
- You receive a detailed quote listing each window and door individually with dimensions, specifications, and pricing. A good quote also covers removal, disposal, making good (plastering and painting around new frames), and any structural work.
- If applying for an SEAI grant, the application is submitted and approved before work begins.
- Manufacture takes 3 to 6 weeks for made-to-measure windows. Off-the-shelf standard sizes can be faster.
- Installation typically takes 2 to 5 days for a full house, depending on the number of windows and complexity. Each window is removed, the opening is prepared, the new window is fitted and sealed, and internal and external finishes are made good.
- A completion certificate is issued, and any SEAI paperwork is finalised.
Common Mistakes to Avoid
- Comparing quotes that include different specifications. One quote for A-rated triple-glazed aluminium and another for standard double-glazed uPVC are not comparable. Always check frame material, glazing spec, U-value, and what is included (removal, disposal, making good).
- Forgetting to budget for making good. Removing old windows often damages internal plaster and external render. If your installer does not include replastering and painting, budget an additional €500 to €1,500 for a full house.
- Not checking conservation area restrictions. If you replace timber sash windows with uPVC in a conservation area without permission, you may be required to remove them and reinstate the originals at your own expense.
- Choosing windows based on price alone without checking energy ratings. A cheaper window with a poor U-value will cost you more in heating over its lifetime. Always check the energy label and U-value.
- Paying a large deposit before manufacture. Standard practice is 10-20% deposit with the balance on completion. Avoid companies that ask for 50% or more upfront, especially if they are not well-established.
What to Look for When Hiring a Window & Door Replacement Professional
Check that the installer is a member of a recognised trade body such as Certus (the industry quality mark for window and door installers in Ireland). SEAI registration is required for grant-eligible work. Ensure the windows carry a CE mark and an independently verified energy rating (A-rated or better). The installer should carry public liability insurance and offer a minimum 10-year guarantee on both the product and installation. Be cautious of installers who offer unusually low prices (the windows may be lower specification or imported without proper certification), who cannot show you a sample of their work, or who ask for a large deposit upfront before manufacture begins. A deposit of 10-20% is standard; 50% or more upfront is a red flag.
Questions to Ask Your Window & Door Replacement Professional
- What U-value do the windows achieve? U-value measures how well a window prevents heat loss. Lower is better. A-rated windows typically have a U-value of 1.4 W/m²K or less. Triple glazing achieves 0.8 to 1.0 W/m²K.
- Does your quote include making good internally and externally? Removing old windows often damages the plaster around the reveals. Some installers include replastering and painting in their price, others leave it for you to arrange separately. This can add €500 to €1,500 to the total cost if not included.
- What warranty do you provide on the product and installation? You need two warranties: one from the manufacturer on the window unit (typically 10-20 years) and one from the installer on the fitting (at least 10 years). If the seal fails or the window drops, you need to know who is responsible.
- How long will manufacture and installation take? Made-to-measure windows take 3 to 6 weeks to manufacture. If you are working to a deadline (a sale, a tenant move-in, a BER re-assessment), factor this into your planning.
- Do I need planning permission to change my windows? In most cases no, but if your home is a protected structure or in an Architectural Conservation Area, you may be restricted on materials, styles, and colours. The installer should flag this.
- What security features are included? Modern windows should include multi-point locking as standard. For ground-floor and accessible windows, laminated glass or security glazing adds protection. Ask what is included and what costs extra.
Frequently Asked Questions
A full window replacement for a typical three-bed semi costs €5,000 to €8,000 in uPVC, €8,000 to €14,000 in aluminium, and €12,000 to €18,000 in timber. Individual window prices range from €400 to €1,200 per window depending on size, material, and glazing specification. Front doors cost €1,500 to €4,000. These prices include installation but check whether making good (replastering, painting) is included or extra.
uPVC is the most popular choice in Ireland: it is affordable, low-maintenance, energy-efficient, and available in a wide range of colours and woodgrain finishes. Aluminium suits contemporary and modern homes with its slimmer profiles and clean lines, and is increasingly popular for extensions and large glass features. Timber is the traditional choice for period properties and conservation areas, offering an authentic appearance but requiring regular painting or staining every 5 to 8 years.
Yes. Upgrading from single glazing to A-rated double glazing can improve your BER by 1 to 2 grades. Upgrading from older double glazing to modern A-rated or triple-glazed units also makes a measurable difference, though less dramatic. The improvement depends on your home's other features. Your BER assessor can estimate the impact before you commit.
Double glazing (two panes with an argon-filled gap) is the standard choice and provides excellent energy performance at a reasonable cost. Triple glazing (three panes, two argon gaps) offers superior insulation and noise reduction but costs 20-30% more. Triple glazing is most worthwhile in exposed locations (coastal or elevated sites), very noisy areas, or as part of a deep retrofit aiming for an A-rated BER. For most Irish homes, A-rated double glazing is the best value.
For most houses, no. Window replacement is generally exempt from planning permission provided you are replacing like with like (same openings, similar appearance). However, if your home is a protected structure or in an Architectural Conservation Area, you may need permission, and there may be restrictions on materials, profiles, and colours. Changing window sizes or adding new openings always requires planning permission regardless of location.
uPVC windows typically last 20 to 30 years. The sealed glazing units may need replacing after 15 to 20 years if the seal fails and condensation appears between the panes. Aluminium windows can last 30 to 50 years with minimal maintenance. Timber windows, if well-maintained (painted every 5 to 8 years), can last 50 years or more. The weakest point is usually the sealed glass unit rather than the frame.
A full house of windows (8 to 12 windows plus a front door) typically takes 2 to 4 days to install. Each window takes 1 to 2 hours to remove, fit, and seal. Allow additional time if making good (plastering and painting) is included. Manufacture of made-to-measure windows takes 3 to 6 weeks before installation can begin, so plan accordingly.
Significantly. Modern double-glazed windows with proper seals reduce outside noise by 25 to 35 decibels compared to single glazing. Triple glazing and laminated glass provide even better sound insulation. If you live on a busy road or near an airport, noise reduction is often the benefit homeowners notice most immediately after installation.
Window & Door Replacement Quotes by County
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