Attic Window Installation in Galway: Velux Costs 2026
Attic window installation in Galway costs about €1,400 to €2,200 for a standard Velux in 2026. Here are the prices by window type, how a fit works, the planning rules and your questions answered.
Attic window installation in Galway costs about €1,400 to €2,200 for a standard Velux in 2026. Here are the prices by window type, how a fit works, the planning rules and your questions answered.
Related: Attic window installation service · Attic window installation in Ireland: costs by city
This guide is for Galway homeowners who want to add a Velux or other roof window to an attic, replace an old leaking one, or turn an attic into a bedroom or office. The photo above is one of our own Galway jobs. For prices in other cities and the full guide to window types, see our attic window installation guide for Ireland, or our attic window installation service page.
A lot of Galway houses have a roof space that is used for storage and could be a bedroom, a home office or a play room. Roof windows are the cheapest way to make that space usable: they bring daylight deep into the room, give you ventilation and, on the rear slope, rarely need planning permission.
Galway weather asks more of the fitting than most places. Strong Atlantic wind and driving rain reach Salthill, Knocknacarra, Barna and Oranmore with little shelter, and a window that is not flashed and sealed properly will show it in the first winter. That is why we always use the full manufacturer flashing kit for your roof covering, with an insulation collar and underlay seal, and fix the frame for exposed sites. Many Galway homes have natural slate or concrete tile, and each needs its own kit. Our slate versus concrete tile guide explains what your roof is made of and how it behaves.
We fit attic windows right across the Galway area, including Galway City, Salthill, Knocknacarra, Renmore, Oranmore, Barna, Claregalway, Athenry, Oughterard and Moycullen. See all the places we cover on our Galway roofers page.
These are indicative Irish-market prices for one window supplied and fitted into an existing slate or tile roof in Galway. Every price includes the window, the correct flashing kit, fitting, an insulation collar and underlay seal, and making good the roof around it. Internal finishing is listed separately because it depends on your attic.
Indicative 2026 price range, supplied and fitted into an existing slate or tile roof, in euro
Fitting more than one window at once costs less per window, because the scaffold, set-up and delivery are shared. If we find rotten timber or a damaged rafter when the opening is made, you are told before we do the extra work. Our quote shows the VAT clearly.
| Type | How it opens | Best suited to |
|---|---|---|
| Fixed | Does not open | Stairwells and landings where you only want light |
| Centre-pivot | Rotates around the middle | Most attic bedrooms and offices |
| Top-hung | Hinged at the top, opens outwards | Low sills and a clear view out |
| Electric or solar | Opens by switch, remote or sensor | High ceilings and hard-to-reach windows |
The centre-pivot is the one we fit most. It opens for ventilation, rotates fully so you can clean the outside pane from indoors, and suits most attic rooms. A top-hung window is better where the sill is low and you want to look out while standing. In Galway we often recommend a rain sensor on electric and solar models, because they close the window by themselves when it starts to rain.
In a bathroom or kitchen, choose the white polyurethane finish, which is made for damp rooms. Everywhere else, white-painted pine is fine. Sizes are named by code, such as MK04 at 78 by 98cm or PK06 at 94 by 118cm, and we choose the size that fits your rafter spacing with the least cutting. Our national guide has the full list of sizes.
A roof window leaks at the flashing, not through the glass. Slate and tile need different kits, and a kit made up on site or a part kit is the usual cause of a leaking Velux. We use the right full kit for your roof and fit the insulation collar and underlay seal inside it. If your existing window is already leaking, see our guide to leaking roofs in Galway, or our roof repair service in Galway.
One window into an existing opening takes half a day to a day with two roofers. A new opening takes one to two days.
The roof is never left open overnight. If rain is forecast, we cover the opening and finish the next dry day.
A roof window on the rear slope of a house is usually exempted development, so you do not need planning permission from Galway City Council or Galway County Council. A window on a slope facing a public road, a Protected Structure or a house in an Architectural Conservation Area needs a check with the council first. Local authorities can read these rules differently, so we tell you what applies to your house at the survey.
If you are converting the attic into a bedroom, the room has to meet building regulations on ventilation, insulation, fire safety and a safe way out. The usual requirement is an escape window that opens to at least 0.33 square metres, with no side shorter than 450mm, and with the bottom of the opening no more than 1,100mm above the floor. Check your plans with an architect or engineer. Our roof condition survey guide explains what we check in the attic first.
Not sure who to trust? Check any roofer against the CIRI register, and see the Velux Ireland website for the full range, sizes and guarantees.
Prices in each city are in our attic window guide for Ireland.
Call our Galway office on 091 622895 or use the contact form. A qualified roofer visits, checks the roof and the attic, and gives you a fixed price in writing. If a repair is the better call, we will say so.
A standard manual Velux roof window costs about €1,400 to €2,200 supplied and fitted in Galway in 2026. A fixed window starts around €900 and an electric or solar model runs €2,400 to €3,600. Replacing an old window like for like is about €1,100 to €1,800. These are indicative prices and your written quote after a free survey is fixed.
One window into an existing opening takes half a day to a day with two roofers. Cutting a new opening in the rafters takes one to two days, plus time inside for plastering and painting.
A roof window on the rear slope of a house is usually exempted development. A window on a slope facing a public road, a Protected Structure or a house in an Architectural Conservation Area needs a check with your local authority first. Different councils can read the rules differently, so we tell you at the survey what applies to your house.
Velux is a brand of roof window. The term skylight is often used for any window in a roof, but a roof window sits flush in a sloping roof and opens like a window, while a flat roof skylight is usually a domed or flat glass unit fixed on a kerb.
It is possible, but it means working on a roof and cutting the rafters, and most of the leaking windows we repair were fitted with the wrong flashing or without an underlay seal. A professional fit comes with a written guarantee, which a DIY job does not.
A correctly fitted Velux does not leak through the glass. Leaks nearly always come from the wrong flashing kit, a missing underlay seal or badly cut slates around the frame. Using the full manufacturer kit for your roof covering is what prevents it.
A well-fitted Velux commonly lasts 25 to 30 years or more. Velux backs its windows with its own product guarantee, with shorter cover on electrical parts and blinds, so check the current terms with Velux. Our own 10-year written guarantee covers the fit.
Yes. We fit roof windows into natural slate, fibre cement slate, concrete tile and flat roofs. Each needs its own flashing kit, and we fit the right one with an insulation collar and underlay seal.
Not always. Many windows can be fitted from ladders and from inside the attic. A steep or tall house, or a window high on the roof, may need an access tower or scaffold, which costs about €300 to €700 and is shown on your quote.
Yes, per window. The scaffold, set-up and delivery are shared, so two or three windows fitted together cost less each than separate jobs. Two windows side by side under one flashing cost about €2,800 to €4,500 in Galway.
It depends on the rafter spacing and head height. Common sizes are MK04 at 78 by 98cm and PK06 at 94 by 118cm. We measure at the free survey and recommend the size that fits with the least cutting.
Yes, if it meets the escape requirement: a clear opening of at least 0.33 square metres, with no side shorter than 450mm and the bottom of the opening no more than 1,100mm above the floor. Check your plans with an architect or engineer.
A bright, usable attic room usually helps a house sell, and Velux's own research says the value added is at least what the windows cost. The biggest gain comes when the window turns unused attic space into a proper room.
Yes. We replace old windows like for like, usually in half a day, and if only the flashing has failed we can often repair it without replacing the window. We tell you which at the survey.
The manual centre-pivot suits most attic rooms. Choose top-hung where the sill is low and you want a clear view, an electric or solar model for windows out of reach, and the polyurethane finish for a bathroom or kitchen.
Yes. We fit roof windows across Galway City and the county, including Salthill, Knocknacarra, Renmore, Oranmore, Barna, Claregalway, Athenry, Oughterard and Moycullen. Call 091 622895 for a free survey.
Attic Window Installation in Galway, Ireland. Free survey, written fixed-price quote, 10-year guarantee.