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Topglass has been supplying and fitting windows and doors across Dublin since 1988. Specialists in window replacement, door replacement, and glazing services for domestic and commercial customers.
Quality Window and Door Replacement Across Dublin
Unit 3, Crosslands Business Park, Ballymount Road Lower, Dublin 12, D12 V0CP, Ireland
ClearLine Windows & Doors supplies and fits PVC windows and composite doors across Dublin. Specialists in window replacement and door replacement with transparent pricing, a 15-year warranty, and SEAI grant support.
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Get ListedAdding natural light to an attic conversion, home extension, or dark hallway completely transforms a living space. In Ireland, velux rooflights and roof windows are the industry standard for sloped and flat roofs. Whether you are installing a new roof window or replacing an old, draughty unit, hiring a certified installer ensures a watertight seal and proper structural support.
The cost of installing a Velux window depends on whether it is a replacement unit (retrofitting an existing window opening) or a brand-new installation requiring rafters to be cut. A standard Velux replacement of the same size costs between 650 and 950 euro, which covers the new window, flashing kit, and labor. The process is typically completed in 3 to 5 hours.
A new Velux installation on a sloped roof ranges from 1,100 to 1,800 euro depending on size and access. This involves cutting structural roof timbers, reinforcing rafters, slate/tile trimming, and internal plasterboard finishing. For modern flat roof extensions, flat glass or curved glass flat rooflights cost between 1,350 and 2,200 euro.
When ordering your velux windows ireland, you need to specify the opening mechanism, glass glazing, and internal finish. Center-Pivot is the standard style, where the control bar is at the top and the window pivots in the middle. Top-Hung windows open outwards from the bottom, providing unobstructed views. For out-of-reach installations, Integra solar-powered or electric windows feature automatic rain sensors that close at the first drop of rain.
Glazing options affect your home's BER rating. Standard double glazing offers excellent thermal properties (U-value approx. 1.3 W/m²K), while triple glazing is recommended for highly insulated A-rated homes or northern elevations (U-value approx. 1.0 W/m²K). Triple glazing also provides superior sound insulation against traffic and rainfall.
A poorly installed roof window will lead to leaks, dampness, and heat loss. Ensure your installer is a qualified carpenter who understands load-bearing roof calculations if new rafters must be cut. Verify that they are registered Velux Certified Installers, which gives them access to official Velux insulation collars and flashing kits.
Confirm that the contractor’s quote includes internal plasterboard framing and skimming around the window aperture, as well as waste disposal for the old window. Check that they hold active public liability insurance to cover accidental roof or water damage during the installation process.
Yes. Most Velux replacements can be completed entirely from within the attic space without requiring external scaffolding, provided the surrounding roof structure and slate/tile tiles are in good condition.
Every Velux window has a small metal data plate located on the top frame of the sash (visible when you open the window). This plate lists the model code (e.g., GGL, GHL) and the size code (e.g., MK04, M04).
Generally, planning permission is not required for Velux windows installed on the rear or side slopes of your roof, provided they do not project above the plane of the roof. Windows on the front slope facing public roads may require planning permission depending on your local county council rules.