If you’re considering adding more natural light to your home, one of the first questions is usually simple: how much does a Velux window cost to install? The answer depends on whether you’re replacing an existing roof window or creating a completely new opening, as well as your roof covering, window specification and the complexity of the installation.
VELUX WINDOW PRICES IN CORK
Based on typical projects carried out by Safeguard Roofing & Building, replacing an existing same-size Velux generally costs €900–€1,300. A new installation typically starts from €1,200–€1,600 on a tiled roof or €1,350–€1,800 on a slate roof.
These figures are a guide rather than a fixed quotation. The final cost depends on the property, window specification and work required.
The table below gives a straightforward guide to Safeguard Roofing & Building’s typical Velux installation prices. Every property is different, so we inspect the work before providing a final quotation.
| Velux Work | What’s Involved | Typical Price |
|---|---|---|
| Replace Existing Velux – Same Size | Remove the old window, fit the new Velux with a new flashing kit and complete the finish | €900–€1,300 |
| New Velux Installation – Tile Roof | Form the opening, reinforce as required, install the window, EDW flashing kit and trim | €1,200–€1,600 |
| New Velux Installation – Slate Roof | Form the opening, reinforce as required, install the window, slate flashing kit and trim | €1,350–€1,800 |
| Custom / Larger / Electric Velux | Larger windows, bespoke specifications, electric opening systems and remote controls | Price on Request |
For an exact price for your property, Safeguard provides free quotations for Velux window and skylight installations in Cork.
Two Velux installations can look similar from inside a property while requiring very different amounts of roofing and structural work. The window itself is only one part of the overall cost.
The main factors affecting the price are the existing roof structure, whether an opening already exists, the type of roof covering, the size and specification of the new window, access to the roof and the finishing work required around the installation.
Replacing a Velux with another window of the same size is generally the most straightforward option because the opening is already formed. A completely new installation requires an opening to be created and the surrounding structure prepared correctly.
The roof covering affects both the installation method and flashing required. Slate installations typically require more careful cutting and detailing, which is reflected in the difference between our typical slate and tiled roof prices.
A standard manually operated roof window will have a different overall cost from a larger or higher-specification unit. Electric controls, remote operation and other upgrades can also change the final price.
Safe and practical access is an important part of any roofing project. Roof height, pitch, surrounding buildings and the position of the proposed window can all influence how the work needs to be carried out.
If you already have a Velux or similar roof window and want to replace it with a new unit of the same size, the work is normally less involved than creating a new opening.
For a typical same-size replacement, Safeguard’s guide price is €900–€1,300. The existing window is removed and the replacement is fitted with a new flashing kit before the surrounding area is properly finished.
Replacement can be worth considering when an older roof window has become difficult to operate, is showing signs of deterioration, has inefficient glazing or is no longer performing as it should.
Worth knowing:A leak around a roof window does not automatically mean the entire window needs replacing. Problems can sometimes originate from the flashing or surrounding roof covering. An inspection helps establish whether repair or replacement is the appropriate option.
For a new Velux installation into a tiled roof, a typical Safeguard price is €1,200–€1,600.
This is more involved than a straightforward replacement because a suitable opening first needs to be formed in the roof. The structure is reinforced where required before the window is installed with the appropriate EDW flashing system and the surrounding area is trimmed and finished.
Correct flashing is particularly important. A roof window interrupts the normal path rainwater takes down the roof, so the window and surrounding tiles need to work together as a complete weatherproof system.
A new Velux installation on a slate roof typically costs €1,350–€1,800.
Slate roofs require a different approach to tiled roofs. The surrounding slates need to be carefully removed, cut and reinstated around the new window, while the appropriate flashing system must be used to create a durable weatherproof junction.
This additional detailing is why a new slate-roof installation generally sits slightly above an equivalent tiled-roof installation.
Not every project fits neatly into a standard specification. Larger roof windows, unusual sizes and electric or remotely operated Velux windows are priced individually by Safeguard.
An electric roof window can be particularly useful when the window will sit above a stairwell, in a high ceiling or anywhere that would make manual operation inconvenient. The right specification depends on where the window is being installed and how the room will be used.
Rather than applying a generic figure to these installations, Safeguard assesses the requirements and provides a quotation based on the actual window and work involved.
Yes. Your roof covering is one of the most important considerations when installing a roof window.
TILED ROOFS
Concrete and clay tiled roofs are common across Cork. The tiles surrounding the opening are removed as required and reinstated around the correctly specified flashing kit once the window has been fitted.
Typical new installation: €1,200–€1,600
SLATE ROOFS
Slate requires careful detailing around the opening and a flashing system designed for the roof covering. The additional work involved generally makes slate installations slightly more expensive.
Typical new installation: €1,350–€1,800
The flashing around a Velux window is not simply decorative trim. It is a fundamental part of the weatherproofing system.
The correct flashing system helps direct rainwater safely around the window and back onto the roof covering below. The appropriate product depends on factors including whether the roof is slate or tile and the profile of the covering.
Poorly fitted or unsuitable flashing can create a weak point where water can enter around the roof window. This is why the window, flashing and surrounding roof covering should be treated as one installation rather than separate components.
Yes. A Velux window can often be installed into an existing pitched roof even where there isn’t currently a roof window.
A new opening needs to be formed and the surrounding structure assessed and reinforced as necessary. The exact work depends on the roof construction, rafter positions, proposed window size and location.
This is why a new installation costs more than replacing an existing same-size window: there is considerably more involved than simply fitting the window itself.
Position affects both the amount of useful daylight entering the room and how practical the window is to use. Roof pitch, room layout, rafter positions and the intended use of the space all need to be considered.
For example, a roof window intended to provide both light and ventilation needs to be positioned so it can be operated comfortably, whereas an electrically controlled window gives greater flexibility in spaces where the ideal position is out of reach.
Where several positions are possible, Safeguard can assess the roof and advise on a practical location before installation.
A properly installed and weatherproofed roof window should provide reliable protection from the weather. When water appears around an existing skylight, however, the source isn’t always the window itself.
Possible causes include ageing or damaged flashing, problems with nearby slates or tiles, deterioration around the installation or another roof defect allowing water to travel before it becomes visible internally.
If you’re experiencing water ingress and aren’t sure where it originates, Safeguard also provides professional roof inspections in Cork to help identify the source of roofing problems.
Condensation and roof leaks are two different problems, although the moisture they create can sometimes look similar from inside the property.
Condensation occurs when warm, moisture-laden indoor air meets a colder surface. Kitchens, bathrooms, bedrooms and converted attic spaces can all produce significant moisture, particularly during colder weather.
Good ventilation, suitable glazing and proper insulation around the window opening all contribute to reducing condensation risk. If moisture repeatedly appears around a roof window, it is worth establishing whether the cause is internal condensation or external water ingress before deciding what work is needed.
That depends on what has failed and the overall condition of the existing installation.
If the window itself remains in good condition and the problem is isolated to surrounding roofing or flashing, targeted repair may be sufficient. An older unit with deteriorated components, poor glazing performance or several recurring issues may make replacement the more sensible long-term option.
Safeguard provides both roof window replacements and roofing repairs, so the recommendation can be based on the condition of the installation rather than assuming that every problem requires a new window. You can learn more about our skylight and Velux window services in Cork.
Installation time depends heavily on the scope of work. Safeguard advises that most standard skylight and Velux installations can be completed within a day, while larger or more complex projects can require additional time.
A same-size replacement is generally more straightforward than forming a completely new opening. Roof construction, access, window size and any additional structural or finishing work will influence the overall timescale.
For rooms directly beneath a pitched roof, a roof window can be an extremely effective way of introducing natural daylight and ventilation without constructing a dormer or altering an external wall.
They are commonly considered for attic conversions, upstairs bedrooms, landings, home offices and other areas where conventional windows are limited or impractical.
The important part is choosing a window appropriate for the room and having the opening, flashing and surrounding roof work completed correctly. A cheap installation that later develops weatherproofing problems is rarely good value.
Planning requirements depend on the property and the proposed work, so homeowners should not assume that every roof window installation is automatically exempt.
Factors such as where the window will be positioned, the nature of the alteration and the property’s planning circumstances can be relevant. If there is any uncertainty, it is sensible to check the current requirements with the relevant planning authority before proceeding.
Online price guides are useful for setting a realistic budget, but an accurate quotation requires the actual roof and proposed installation to be assessed.
Safeguard Roofing & Building has over 25 years of roofing experience and provides free, no-obligation quotations throughout Cork City and County.
When assessing a Velux project, the team can consider the roof covering, existing structure, access, window specification and finishing requirements before providing a price for the work.
Safeguard provides Velux and skylight installation services throughout Cork City and County, including Douglas, Ballincollig, Carrigaline, Midleton, Cobh, Mallow, Bandon, Macroom and surrounding areas.
You can view our full Cork service areas or contact the team if you’re unsure whether we cover your location.
FREE NO-OBLIGATION QUOTATION
Every roof and installation is different. Speak with Safeguard Roofing & Building for a free quotation based on your property, roof type and chosen Velux window.
Velux Window Installation Costs in Cork: FAQs
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