Two Velux roof windows installed into a flat roof by Perfect Roofing

Roofing service

Velux Windows & Skylights

Roof windows and skylights need correct flashing, weathering, and roof integration. We install and repair Velux-style roof windows and investigate leaks around existing skylights.

Call +353 830663462 WhatsApp us Email [email protected]

What we can help with

The images are real Perfect Roofing Velux job photos, showing roof-window units, upstands, and flat-roof waterproofing details rather than generic roofing stock photography.

Velux-style roof window installation
Skylight leak investigation
Flashing and weathering repairs
Advice on ventilation and light placement

Velux flat roof windows with surrounding waterproofing detail by Perfect Roofing — Real Perfect Roofing Velux job photo showing the surrounding flat-roof waterproofing detail.

When homeowners usually call us

Water staining around a roof-window reveal
A roof window fitted into a flat roof or pitched roof without reliable weathering
Old flashing kits, failed seals, or poor membrane turn-ups
Condensation being mistaken for an external leak

What we check before recommending a fix

We check the window unit, flashing kit, membrane, insulation, upstands, surrounding roof covering, and internal reveal.

For new installations, we look at roof pitch, drainage path, structural opening, and the best way to integrate the window before cutting.

If the issue is condensation rather than rainwater ingress, we say so and explain the ventilation or insulation concern.

Best-practice approach

Good velux work comes down to the details

The cheapest-looking fix is often the one that fails first. These are the details we look at before recommending a repair, replacement, or installation.

Choose the right window for the roof type

A pitched-roof Velux-style window and a flat-roof skylight are different installations. The roof pitch, room use, ventilation needs, and drainage path all affect the right product and detail.

Use the correct flashing and weathering detail

Most roof-window leaks are not because the glass failed. They usually come from the flashing kit, membrane turn-up, poor upstand, surrounding tiles/slates, or a badly finished join.

Plan the opening before cutting

A roof window should be placed with rafters, insulation, internal finish, drainage, and external roof covering in mind. The neatest-looking position inside is not always the safest detail outside.

Separate leaks from condensation

Water around a skylight can be rainwater ingress, condensation, or both. We check the external weathering and the internal reveal/insulation before deciding what needs to change.

Finish the surrounding roof properly

The job is not complete when the window is sitting in the opening. The membrane, flashing, surrounding roof covering, insulation, and internal finish must all work together.

Why Perfect Roofing

How we approach velux differently

The goal is not to make the page longer. It is to show the judgement behind the work, so customers know what they are paying for before they call.

We approach roof windows as roofing work first, not just window fitting, so the surrounding roof detail gets proper attention.

We explain why a leak is happening before recommending repair or replacement, especially where condensation may be involved.

The page uses real Velux/roof-window job photos, showing the waterproofing and upstand details that customers normally never see.

How the job usually works

Step 1

Inspect the roof and the skylight detail

Step 2

Confirm whether repair or replacement is suitable

Step 3

Install or repair the flashing and roof window detail

Step 4

Check the interior and exterior finish

Questions about velux

Can you fix leaks around skylights?: Yes. Leaks can come from flashing, roof covering, condensation, or ageing materials, so we inspect the full detail first.
Do you install new roof windows?: Yes. We can discuss suitable placement and the roofing work needed around the new window.

Call +353 830663462 WhatsApp us Email [email protected]

Roofing services

Explore the main roofing, gutter, and Velux services available across Dublin, Wicklow, Naas, and nearby areas.

Areas we cover

Dublin City North Dublin South Dublin Lucan Bray Wicklow Naas