Expert Roof Window and Skylight Installation, Replacement and Repair
Fit a new Velux, replace a tired skylight or fix a leaking roof window. We install and repair roof windows across Hampshire with weathertight flashing and clean, professional finishing.
Why A Badly Fitted Roof Window Causes Problems
Fitting the window is only half the job. What happens around the frame, at the flashing and in the timbers behind it causes problems of its own.
Water gets in around the frame
A roof window is only as good as its flashing. Fit it badly or let the seals age, and rain tracks around the frame into the timbers and ceiling below.
Draughts and heat loss
Worn seals and gaps let warm air out and cold air in, so the room runs cold and your heating works harder than it should.
Condensation and damp
A poorly ventilated or badly sealed window drips condensation onto the surrounding plaster, staining ceilings and feeding damp.
A repair that spreads
Left alone, a small leak rots the batten and rafter around the opening, turning a simple reseal into a structural repair.
What A Proper Roof Window Job Sets Up
Fitting the window and its flashing well is what makes the seal, the finish and the daylight you wanted actually last.
Velux window installation
New roof windows fitted into pitched roofs, with the opening formed correctly and the flashing sealed to the surrounding tiles or slates.
Velux window replacement
Swap an old or failed unit for a new one, reusing or upgrading the flashing kit for a lasting weathertight seal.
Skylight installation
Bring daylight into lofts, extensions and landings with skylights sized and positioned to suit the roof.
Roof window repairs
Fix leaks, failed seals, stiff mechanisms and damaged glazing without replacing the whole unit where a repair will do.
Flashing kit replacement
Renew the flashing around the frame, the part that keeps water out, so the window seals cleanly to the roof covering.
Repairs around roof windows
Put right tiles, battens and timbers disturbed by a leak or a previous poor installation.
How We Fit And Repair Roof Windows
A roof window is not a drop-in job. The flashing runs through every stage. Here is how it fits into the six steps.
Inspection & advice
We check the roof window or the proposed location and tell you honestly whether you need a repair, a replacement or a new installation.
Free written quotation
You get clear written costs covering the window, the flashing and any surrounding work, with no hidden extras.
Form or prepare the opening
For a new window we cut and frame the opening cleanly; for a replacement we remove the old unit and check the surround.
Fit the window
We install the roof window level and secure, ready for a weathertight seal.
Flash and weatherproof
We fit the flashing kit and dress it into the surrounding tiles or slates so water runs off, not in.
Finish and clean up
We check the operation and seal, make good the surrounding roof and leave your property clean and tidy.
Why Homeowners Across Hampshire Choose JSA
JSA combines more than 15 years of roofing experience with real knowledge of the structure beneath your tiles. From repairs and full replacements to inspections, ventilation and timber work, we handle the complete roof, backed by honest advice, transparent pricing and quality workmanship on every job.
15+ Years of Roofing Experience
Our experienced team has worked on pitched roofs, flat roofs and roof structures across Hampshire, from minor domestic repairs to full replacements and specialist structural timber work.
Complete Roofing Service
We inspect, repair, replace and maintain the whole roof system, from tiles and flashing to timbers, ventilation and guttering, so you never need to appoint several different contractors for one roof.
Honest Advice & Clear Quotations
We recommend the work your roof genuinely needs, never a full replacement by default. Every quotation is clear and written, with free, no-obligation advice to help you decide.
Trusted by Homeowners Across Hampshire
Read genuine customer reviews and see why homeowners, landlords and businesses trust JSA Roofing Solutions for honest advice and quality roofing work. Visit our Checkatrade profile to read real feedback from customers across Hampshire who have had their roofs repaired, replaced and maintained by our team.
Have Questions? We've Got the Answers
Find answers to the most common questions about roof window installation, skylight replacement, leak repairs and our process. If you need further advice, our friendly team is always happy to help with free, no-obligation guidance.
Which areas do you cover?
We cover Hampshire and the surrounding areas. Ask us if your town isn't listed and we'll let you know.
Do you provide free quotations?
Yes. Every quotation is free and no-obligation, with clear written costs and no sales pressure.
Will you make good the roof around the window?
Yes. We put right any tiles, battens or timbers disturbed by the leak or a previous poor installation.
My roof window is leaking. Can it be repaired?
Usually, yes. Most leaks come from worn seals or failed flashing rather than the window itself, and we can often reseal or reflash it without a full replacement.
Can you replace an old skylight with a new one?
Yes. We remove the old unit, check the surround and fit a new window with a fresh flashing kit for a weathertight seal.
Do you install Velux and other roof windows?
Yes. We install Velux and equivalent roof windows in pitched roofs, forming the opening and sealing the flashing to the surrounding covering.
Professional Roofing Services Across Hampshire
JSA Roofing Solutions serves homeowners, landlords and commercial properties throughout Hampshire and the surrounding areas, delivering roof repairs, replacements, inspections and free, no-obligation quotations wherever you need us across the South Coast.
Let's Work Together
Got Spray Foam Insulation? We Remove It Too
Spray foam in your loft can hold up a mortgage, a sale or a survey. Our specialist team safely removes open-cell and closed-cell foam, inspects the timbers underneath and fits replacement insulation. Visit JSA Spray Foam Removal to see the full service.
