What Happens During a Skylight Installation

What happens during a skylight installation with Maxwells Roofing (Milton Keynes & surrounding areas)

Maxwells Roofing is an owner-led, highly reviewed local company fitting pitched and flat roof skylights (including Velux and bespoke options). This page walks you through the process from survey to sign-off so you know exactly what to expect.

What we do step-by-step
- Survey and design: We assess your roof (inside and out), confirm the best skylight type/size, and specify the correct flashing for your roof covering and pitch.
- Compliance advice: We guide you on Building Regulations (Parts A, B, C, F, L) and handle Building Control where needed.
- Installation day: We create the opening, trim rafters correctly, install the frame and flashing, weatherproof, insulate, add a vapour control layer, and make good internally. Electrics for powered units are completed by qualified electricians.
- Testing and handover: Water and operation checks, tidy site, warranties, and care guidance.

Design choices
- Types: Pitched roof windows (top-hung/centre-pivot), flat roof rooflights and lanterns (fixed, opening, walk-on), conservation styles, and smoke/vent units.
- Options: Double/triple or acoustic glazing, low‑E coatings, laminated panes, manual/electric/solar opening, trickle vents, rain sensors, and integrated blinds.

Timelines and costs
- Typical durations: Single roof window ~1 day; multiple units 1–3 days; lanterns/large rooflights 1–2 days plus finishing.
- Price drivers: Access/scaffolding, product type and size, glazing and controls, internal finishing, electrics, waste and making good.

Aftercare and preparation
- Care: Clean with non‑abrasive products, check seals and flashings yearly, ventilate to manage condensation. Warranties provided (product and workmanship).
- Get ready: Clear 2–3 m around the area, keep routes clear, expect some fine dust, confirm power access, manage pets/children, and arrange parking.

Why choose us
- Local, owner-led quality across Milton Keynes, Newport Pagnell, Bletchley, Stony Stratford, Great Linford, Bradwell, Bedford, Luton, Northampton.
- 80+ 5‑star Checkatrade reviews and 5‑star‑only Google reviews.
- Fully insured, transparent pricing, fast response.

Call for your free quote: 07311091804
Email: sales@miltonkeynesroofing.uk

What Happens During a Skylight Installation (Milton Keynes & Surrounding Areas)

Bring natural light into your home with a professionally installed skylight from Maxwells Roofing. We are a highly reviewed, family-run roofing company based in Milton Keynes with 80+ 5-star reviews on Checkatrade and 5-star-only reviews on Google. From initial survey to final sign-off, this page explains exactly what to expect when you choose us to fit a skylight or rooflight.

Call Us Now For A Free Quote on 07311091804

Last updated: November 2025

1. Overview: How a skylight installation works

A quality skylight installation follows a proven, safety-first process that protects your roof and delivers a watertight, well-insulated result:

  • Initial survey and design – We assess your roof covering, structure, and pitch, confirm the best skylight type and size for your space, and specify the correct flashing kit for your roof material and pitch.
  • Compliance and planning – We advise on Building Regulations, ventilation, insulation, and whether any Building Control notification is required.
  • Installation day – We create a precise opening, fit structural trimmers, install the skylight with manufacturer-approved flashing, fully weatherproof the opening, insulate and seal internally, and make good the finishes.
  • Sign-off and aftercare – We test for leaks, check operation, provide warranty details, and share care and maintenance tips so your rooflight performs for decades.

Call Us Now For A Free Quote on 07311091804

2. Pre-installation survey and design choices

2.1 Roof assessment and measurements

  • External inspection – We check your covering type (tile, slate, EPDM, felt, GRP), roof pitch, batten layout, underlay condition, and access needs such as scaffold or a mobile tower.
  • Internal review – We assess rafters, ceiling finishes, joist directions, and any services such as cables or pipes to plan a safe structural opening and neat internal finish.
  • Accurate sizing – We measure for both the daylight opening and the frame, ensuring the unit meets your lighting goals and suits the room’s proportions.

2.2 Choosing the skylight type and size

We install trusted brands, including Velux, alongside bespoke options to suit all roof types:

  • Pitched roof windows – top-hung or centre-pivot
  • Flat roof rooflights – fixed, opening, walk-on, or lanterns
  • Roof lanterns for extensions and orangeries
  • Conservation roof windows for period properties
  • Specialist smoke or vent units where specified by design teams

2.3 Glazing, ventilation, and accessories

  • Glazing options – Double or triple glazing, low-E coatings for heat retention, acoustic glazing for noise-sensitive rooms, laminated inner panes for safety.
  • Ventilation – Manual or electric opening, solar-powered options, trickle vents, and rain sensors to support Part F ventilation needs.
  • Sun and privacy control – Integrated blinds, blackout blinds for bedrooms, insect screens, and remote control kits.
  • Light shafts and reveals – Plasterboard reveals designed to optimise natural light spread into the room.

2.4 Compliance, permissions, and paperwork

Most skylight projects touch the structure or thermal performance of the roof, so Building Regulations often apply:

  • Part A – Structure – Correct rafter trimming and load redistribution.
  • Part B – Fire Safety – Materials and compartmentation considerations, especially in terraces or flats.
  • Part C – Resistance to Moisture – Weatherproofing, flashings, and condensation control.
  • Part F – Ventilation – Adequate airflow to prevent damp and mould.
  • Part L – Thermal – Efficient glazing and insulated details to limit heat loss.

We follow manufacturer instructions and current best practice, and we liaise with Building Control where required. If more than 25% of a roof is refurbished, insulation upgrades may be mandatory. Like-for-like replacements and between-rafter installations can sometimes be self-certified by registered contractors. We will guide you to the right route and handle any notifications with you.

2.5 Your fixed quote and scheduling

  • Transparent pricing – An itemised quote covering product, access, labour, making good, and any electrics.
  • Lead times – Typically 1 to 3 weeks depending on product availability and weather.
  • Scheduling – We agree dates that suit you and plan for minimal disruption.

Call Us Now For A Free Quote on 07311091804

3. Installation day: step-by-step

3.1 Safe access, protection, and setup

  • Access – We erect scaffold or a mobile tower as needed, with edge protection where required.
  • Protection – Inside, we lay dust sheets and floor protection and isolate a clean work zone.
  • Briefing – Your installer confirms the plan, timings, and safe working areas.

3.2 Cutting the opening and structural framing

  • Marking out – We set out the opening from inside and outside to ensure perfect alignment between rafters.
  • Removing coverings – Tiles, slates, or flat roof layers are carefully lifted and set aside for reuse where possible.
  • Structural trimming – Rafters are trimmed to create the opening, then headers and trimmers are installed to maintain load paths in line with Part A and product guidance.
  • Underlay and battens – Adjusted and dressed to prepare for the frame.

3.3 Fitting the skylight, flashing, and weatherproofing

  • Frame installation – The frame is squared, levelled, and fixed through brackets at the correct positions.
  • Flashing kit – We install the correct flashing for tile, slate, or flat roof membranes so rainwater sheds correctly.
  • Weathering – Underfelt collars and upstands are integrated and all interfaces are sealed to resist wind-driven rain.
  • Reinstatement – Tiles and slates are cut and refitted neatly. For flat roofs, membranes such as EPDM, felt, or GRP are dressed up the upstand and sealed to specification.

3.4 Insulation, vapour control, and internal finishing

  • Insulation – Around the frame and within the light shaft to reduce cold bridges and support Part L efficiency.
  • Vapour control – A vapour control layer is installed or retained as needed to help prevent condensation.
  • Internal reveals – Framed and plasterboarded, with joints taped and skim-ready. Plaster skim and paint can be arranged on request.
  • Trims and sills – Finished neatly for a clean, modern look.

3.5 Electrical wiring for powered units

  • Power and controls – Qualified electricians connect and test electric or solar roof windows, blinds, and sensors in line with current regulations.

3.6 Testing, snagging, and clean-up

  • Water test – Where appropriate, we perform a controlled hose test to check weathering details.
  • Operation check – We demonstrate opening, closing, locking, and any blind controls.
  • Site clean – Rubbish removed, surfaces vacuumed, and the work area left tidy.
  • Handover – You receive warranty details, care guidance, and advice on what to watch for after heavy weather.

Call Us Now For A Free Quote on 07311091804

4. UK Building Regulations for skylights (Milton Keynes)

We plan and install with Building Regulations in mind so you gain light without compromising performance:

  • Part A – Structure – Correct trimming to redistribute loads when a rafter is cut. Larger spans may require design input.
  • Part B – Fire Safety – Appropriate materials and attention to party walls, boundaries, and compartmentation.
  • Part C – Moisture – Flashings, underlay collars, correct laps, and airtight details to prevent leaks and condensation.
  • Part F – Ventilation – Opening areas and trickle vents sized to guidance where needed.
  • Part L – Thermal – Low U-value glazing and a well-insulated shaft to limit heat loss.

If Building Control involvement is required, we coordinate with you and the local authority for smooth inspection and sign-off.

5. Timelines and costs: what affects the price

Typical time on site

  • Single pitched roof window – usually 1 day including external work and basic internal finishing
  • Multiple roof windows – 1 to 3 days depending on number and locations
  • Flat roof lantern or large rooflight – 1 to 2 days plus internal finishing
  • Complex or structural upgrades – allow additional time

Main factors that influence cost

  • Roof type and access needs such as scaffold, height, or complexity
  • Product type and size – standard roof window vs bespoke rooflight or lantern
  • Glazing and controls – acoustic or triple glazing, electric or solar opening, integrated blinds
  • Internal finishing level – first-fix board only vs full skim and paint
  • Electrical requirements and location of power
  • Waste removal and making good

We provide clear, itemised quotes so you can compare options with confidence.

Call Us Now For A Free Quote on 07311091804

6. Aftercare, maintenance, and warranties

  • Cleaning – Use non-abrasive cleaners. Many modern units pivot for safe cleaning from inside.
  • Seasonal checks – Inspect seals and flashings annually and keep drainage channels clear of moss and debris.
  • Condensation control – Use trickle vents and maintain steady heating and ventilation in colder months.
  • Re-sealing – Gaskets and seals are consumables that may need periodic replacement over time. If you notice draughts, contact us.
  • Warranties – Product warranties vary by brand and model, often 10+ years on glazing or frames. Our workmanship is covered by our installation guarantee. Full details are provided with your quote.

7. Preparing your room: homeowner checklist

  • Clear the area – Move furniture and belongings 2 to 3 metres from the work zone and cover remaining items.
  • Access routes – Keep hallways and stairs clear so materials can be moved safely.
  • Dust management – We sheet up thoroughly, but fine dust is possible. Close doors to adjacent rooms if you can.
  • Power – Let us know where we can safely plug in tools if needed.
  • Pets and children – Keep away from the work area for safety.
  • Parking – Provide parking or permits if required for timely setup and delivery.

8. Why choose Maxwells Roofing (local, owner-led, 5-star)

  • Local expertise – Based in Milton Keynes and serving Newport Pagnell, Bletchley, Stony Stratford, Great Linford, Bradwell, Bedford, Luton, Northampton, and nearby villages.
  • Owner-led quality – Company owner Luke Maxwell oversees every project for consistent standards.
  • Top-rated reputation – 80+ 5-star reviews on Checkatrade and 5-star-only reviews on Google Business.
  • Fully insured and qualified – Safe, compliant installations using premium materials and manufacturer-approved methods.
  • Honest pricing – Transparent, competitive quotes with no hidden extras.
  • Fast response – From small leaks to new skylights and lanterns, we respond quickly and keep you informed.

Call Us Now For A Free Quote on 07311091804
Email: sales@miltonkeynesroofing.uk

9. FAQs: skylight installation in Milton Keynes

Q1: Do I need planning permission for a skylight?
In most cases, skylights fall under permitted development if they do not protrude more than 150 mm beyond the roof plane and are not higher than the ridge. Conservation areas and listed buildings have stricter rules. We can check your situation during the survey.

Q2: How long does a skylight installation take?
Most single roof windows take a day. Larger rooflights or lanterns and multiple units can take 1 to 3 days including internal making good. We confirm a realistic schedule with your quotation.

Q3: Will it cause leaks?
A correctly installed skylight with the right flashing and underlay integration is watertight. We check operation, perform water tests where appropriate, and back our work with a workmanship guarantee.

Q4: Can you install skylights on flat roofs?
Yes. We install flat roof rooflights and lanterns with insulated upstands and compatible membranes, sealed to manufacturer specifications for a durable finish.

Q5: What is the best way to reduce heat loss or gain?
Choose low U-value glazing, insulate the shaft correctly, ensure good airtightness, and consider blinds. We specify a package that supports comfortable year-round performance.

Q6: Can you retrofit a skylight into an existing loft conversion?
Yes, subject to structure and design. We assess rafters, finishes, ventilation, and any fire safety considerations before recommending options.

Q7: Do you handle plastering and electrical work?
Yes. We can include plaster skim or painting and qualified electrical connection for powered units in your quote for a turnkey finish.

Q8: How much mess will there be?
We protect floors and surfaces, control dust, and tidy thoroughly. Before starting, we discuss practical steps to minimise disruption for your household.

10. Get your free quote

Ready to transform your home with more natural light?

We survey, design, install, and maintain skylights across Milton Keynes and the surrounding areas with owner-led quality and friendly, reliable service.

Suggested images and alt text

  • Image: Installer placing roof window frame into opening. Alt: Fitting a roof window with structural trimmers and flashing on a tiled roof in Milton Keynes.
  • Image: Flat roof lantern on a new extension. Alt: Insulated flat roof lantern installed with upstand and sealed membrane.
  • Image: Finished interior light shaft. Alt: Plastered light shaft around skylight with integrated blackout blind.
  • Image: Flashing detail close-up. Alt: Slate flashing kit integrated with roof underlay and counter-battens.

If you are planning wider improvements, our team can help with fast-response Emergency Roofing, safe and tidy Chimney Repairs, durable Flat Roof Systems, neat and protective Fascia and Soffits, and routine Gutter Maintenance to keep your home in top condition.