Velux & Roof Window Installations
From £350
Bring natural light and ventilation to loft spaces
Free Inspection Available
Not sure what you need? We offer free inspections for all customers.
Professional Surveys from £50
Detailed written report with photos and recommendations.
Professional Velux and skylight installation bringing natural light into dark loft conversions, bedrooms and bathrooms.
Why Choose FirstFix Fascias
Natural Light
Roof windows provide 40% more light than vertical windows.
Ventilation
Opening windows improve air circulation.
Add Value
Functional loft space increases property value.
Guaranteed
Velux windows come with 10-year guarantee.
What's Included
Velux or quality equivalent window
Slate or tile flashing kit
Interior trim and finish
Leak-proof installation
Plaster repairs if needed
10-year installation guarantee
Our Process
Survey
Assess roof structure and determine optimal window position.
Window Selection
Choose size, opening style and any special features.
Installation
Cut roof opening, fit window and weatherproof flashing.
Internal Finish
Plaster reveals and fit internal trim for neat finish.
Quality Check
Water test and inspection to ensure perfect installation.
Frequently Asked Questions
How much does Velux window installation cost?
Velux installation costs from £350 for basic windows. Average installations £550-£900 including window, flashing, labor and finishing.
What size roof window do I need?
Minimum 550x780mm for emergency escape (bedrooms). Living spaces use 780x980mm or 1140x1180mm for good light. We advise on optimal sizes.
Can you install Velux windows on any roof?
Velux windows suit roofs from 15-90° pitch. Flat roof windows available for pitches under 15°. We install in tiled, slate and metal roofs.
How long does roof window installation take?
Single window installed in 4-6 hours typically. Most completed in one day. Room usable same evening.
Do Velux windows leak?
Properly installed Velux windows with correct flashings do not leak. We use genuine Velux flashing kits and guarantee weather-tightness for 10 years.
Related Services
Full Roof Replacement
From £3,500
Complete new roof installation with 20-year guarantee
Learn More →Roof Repairs (Tile, Slate, Flat, Metal)
From £99
Expert roof repairs for all roofing types
Learn More →Warm Roof & Insulation Upgrades
From £599
Energy-saving insulation upgrades for flat and pitched roofs
Learn More →Ready to Get Started?
Contact us today for a free, no-obligation quote for velux & roof window installations
Serving South Yorkshire and surrounding areas:
And many more locations across South Yorkshire