Natural Light, Fitted Properly
A roof light can transform a dark loft, landing, kitchen or extension, but only if it is fitted and weatherproofed correctly. Most leaks around roof windows come from poor flashing or a worn seal, not from the window itself.
As roofers, we fit roof lights as part of the roof, not as an add-on. That means the opening, the flashing and the roof covering around it are all done together, so the finished job keeps the weather out.
Types Of Roof Light We Install
We work with all the common types:
Velux roof windows
Roof windows for pitched roofs in loft conversions, landings, bathrooms and extensions.
Keylite roof windows
Keylite roof windows fitted and flashed to suit slate or tile roofs.
Sun tunnels
Light tunnels that bring daylight into dark rooms, hallways and landings without a full window.
Built-up skylights
Built-up and flat roof skylights set into flat roofs on extensions, kitchens and outbuildings.
Replacement roof lights
Swapping an old, leaking or misted roof light for a new one in the same opening.
Flashing and seal repairs
Re-flashing and resealing roof lights that leak, where the window itself is sound.
What We Can Help With
Typical skylight and roof light jobs:
- Supplying and fitting a new roof window in a pitched roof
- Fitting a roof light into a new extension or flat roof
- Installing a sun tunnel in a landing, hallway or bathroom
- Replacing an old or leaking skylight
- Re-flashing and sealing around an existing roof light
- Fitting roof lights as part of a new roof or re-roof
Why Roof Lights Leak
Most skylight leaks are traced to the flashing, the seals or the roof covering around the window rather than the glass. Slipped tiles or slates, worn lead or aluminium flashing, failed sealant and blocked gutters feeding water into the area can all play a part.
We inspect the whole area around the roof light, not just the window, so the repair fixes the cause. In some cases the window can stay and only the flashing needs redoing. In others, replacing the roof light is the better option.
Why Choose KJ Roofing & Building
What you can expect:
- A free, no-obligation quote
- Roof lights fitted and flashed as part of the roof, by roofers
- Honest advice on repair or replace, so you only pay for what is needed
- Full public liability insurance on every job
- A 12-month workmanship guarantee on repairs and a 10-year workmanship guarantee on new roof lights and replacements
- Photos of your roof light can be sent with your enquiry to speed up the quote
How It Works
Simple and clear:
Call, message on WhatsApp or request a call back, and tell us what you need. Photos help.
We look at the roof and the position of the roof light and talk through the options.
You receive a clear written quote.
Once agreed, we fit or repair the roof light and make sure the roof is weathertight around it.
We check the finished job with you before we leave.
Free “Is My Roof Failing?” Checklist
A one-page checklist you can use from the ground and the loft to spot the early warning signs. Free to download.
Get The Free ChecklistIn Short
A well-fitted roof light brings daylight into the house for years. A badly fitted one leaks. Because we are roofers first, we fit roof lights the way they should be done, and we are happy to look at any existing leak and tell you honestly what is needed.
Frequently Asked Questions
What types of roof light do you install?
We install roof windows such as Velux and Keylite, sun tunnels and built-up skylights for flat roofs, and we can replace or repair existing ones.
Why is my skylight leaking?
The most common causes are worn flashings, failed seals, slipped tiles or slates around the window, and blocked gutters. Often the window itself is fine. We inspect the whole area to find the real cause.
Can you repair a leaking roof light without replacing it?
Often yes. If the window is sound, re-flashing and resealing can solve the problem. If the roof light is old, damaged or misted, replacing it may be the better option, and we will tell you honestly which applies.
Can you fit a roof light in a flat roof?
Yes. We fit built-up skylights into flat roofs on extensions, kitchens and outbuildings, and we can build them into new flat roofs.
What is a sun tunnel?
A sun tunnel is a light tube that brings daylight from the roof into a room below, which is useful for landings, hallways, bathrooms and other areas where a full window is not practical.
Do you offer a guarantee?
Yes. We give a 12-month workmanship guarantee on repairs, including re-flashing and resealing, and a 10-year workmanship guarantee on new roof lights and replacements.
Do you offer free quotes?
Yes. Our quotes are free and without obligation. You can send photos with your enquiry to help us give you a clearer idea.
Which areas do you cover?
We cover Wrexham, Chester, Flintshire, Denbighshire, the Wirral, north Shropshire and west Cheshire, and take on Liverpool and Merseyside by arrangement. Enter your postcode or town in our area checker or call us to confirm.
- Fully Insured
- 10-Year GuaranteeNew roofs
- 12-Month GuaranteeRepairs
- Free QuotesNo obligation
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- 10-year workmanship guarantee on new roofs
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