Skylight installation and repair in Sussex

Bring more natural daylight into your home or workplace with professionally installed, energy-efficient skylights that look great and stay watertight.

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What do you need?

Skylight repairs or full replacement?

Skylights are one of the best ways to transform a space without changing the footprint of your property. The right skylight can brighten darker rooms, improve airflow, and reduce the need for artificial lighting during the day.

This service covers full skylight supply and installation, replacement of older units, and repairs where existing skylights are leaking, misted, or poorly sealed. Every installation is planned around your roof type and internal finish, so it performs properly and looks tidy inside and out.

We install bright, secure skylights

Do you have:

Rooms that feel dim even in daylight?
Leaky or draughty skylights causing damp patches and staining?
Older skylights that mist up or lose heat?
Poor installation leading to recurring issues?

We install and repair skylights with a focus on watertight detailing, correct insulation, and a clean internal finish. The result is a brighter space with a secure, weatherproof skylight that is built to last!

Professional service

What’s included in our skylight service

Free consultation and advice

We provide advice on the best skylight type for your property.

Site survey

We carry out an extensive survey to confirm roof structure, positioning, and access.

Professional installation

Professional installation with careful sealing and weatherproofing.

Replacement and repair options

We replace or repair leaking, damaged, or outdated skylights.

Aftercare guidance

We will answer any questions so you know how to maintain performance over time.

Warranty support

Every installation comes with a guarantee and support for peace of mind.

How we work with you

Five straightforward steps from consultation to completion. We keep you informed at every stage and deliver the results you expect.

01 Consultation

Tell us what you want to achieve, and we will advise on the best options.

02 Site Survey

We assess roof type, positioning, access, and internal finishing needs.

03 Quotation

Clear pricing with the recommended skylight and installation approach.

04 Installation

Professional fitting, watertight sealing, and tidy workmanship.

05 Final inspection

We check weatherproofing, finish quality, and answer any questions.

What our customers say

"Pleased with the work done by Liam and Mackenzie which was well priced. Hard working and clearly, their work ethic is very good. Would be happy to engage for any further work and recommend."

"Liam and McKenzie did a fantastic job and were a pleasure to have working on the house. Very reliable very hard working and totally reliable. Always ready to talk us through every step of the works for beginning to end. Thoroughly recommendable and very professional."

"Liam completed a magnificent job on replacing an entire large flat roof and upgrading it with thick insulation. The work was undertaken to the highest standard, on time and on budget. It was a pleasure to have Liam working on the job; he is courteous, reliable and persistent in achieving a timely completion in spite of extremely adverse weather conditions. I cannot recommend him and his work more highly."

We stand behind every job With A 10-Year Guarantee

Every installation by LF Flat Roofing comes with a 10-year workmanship guarantee.

If the skylight develops a problem due to our installation, we return and fix it at no cost.

No arguments, we put it right.

Frequently asked questions

Find answers to common questions about our flat roofing services.

Can skylights be installed on flat roofs?

Yes, with the right skylight type and correct detailing for flat roofing systems.

How long does skylight installation take?

Many installations can be completed within a day, depending on roof type and internal finishing.

Will a skylight make the room colder?

Not when installed correctly. Modern skylights offer strong thermal performance and we install with proper sealing and insulation.

Can you repair a leaking skylight, or does it need replacing?

It depends on the cause. Some issues are repairable, but older or failed units are often best replaced for long-term reliability.

Do you handle internal finishing around the skylight?

Yes, we can advise and complete the finishing so the inside looks neat and complete.

Where is the best place to position a skylight?

We recommend positioning based on roof structure, sunlight direction, and the room’s layout to maximise daylight.

Have a question that’s not listed?

Send it over with a photo if you have one, and we will advise on the best next step.

If you have a question for us, give us a call!