All Pro Contractors Ltd · Milton Keynes and 30 miles around itallprocontractorsltd@gmail.com
Slating a re-roof over new battens and membrane
4.94 out of 560 TrustATrader reviews

Roof windows in Milton Keynes

Roof windows in Milton Keynes are the cheapest way to turn a dark loft into a room you actually use, and the fastest way to get a leak if the flashing kit is fudged.

Free roof inspection, no call-out charge.

Free quote, fixed price and no sales visit.

  • 16 years on the tools
  • 4.94 from 60 reviews
  • Fully insured
  • Free written quotes

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Denis looks at the job, photographs what he finds and sends you a written price. No hard sell and no sales visit.

4.94 / 560 reviews
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Insurance2 millionAllianz, in date
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TrustATrader 4.94 out of 560 TrustATrader reviews Expert Roofer Verified Expert Roofer VerifiedIndependently checked
16 years on the tools
Fully insured to 2 million pounds
Free written quotes

New rooflights

Opening formed and trimmed, window fitted level, flashing kit set into the tile or slate courses, then the inside lined and ready for plastering. We work to the window maker's detail rather than improvising with lead and sealant.

Two roof windows fitted in a tiled roof

Leaking roof windows

Nearly always the flashing, the tile course underneath or a perished seal, not the window itself. We will tell you which, and whether a repair or a replacement unit is the better spend.

Dormer front stripped to the timber frame around the window

Dormers and cheeks

Where a rooflight is not enough we rebuild dormer cheeks and re-cover them, so the whole face is sound rather than patched around a new window.

New roof window fitted with membrane and battens around it

What is included

  • New roof windows cut in and fitted
  • Correct flashing kit for tile or slate
  • Leaking and misted units diagnosed
  • Dormer cheeks re-covered
  • Inside lined ready for plaster
  • Guarantee terms in writing

How a roof window is fitted, step by step

  1. Set out from inside. The window position is marked in the loft to suit the room, the headroom and the rafter spacing.
  2. Open the roof. Tiles or slates removed around the opening, membrane cut back and battens trimmed.
  3. Trim the rafters. New timber trimmers fixed above and below, so the roof load goes round the opening.
  4. Fit the frame. The window frame fixed square and level, with the insulation collar fitted around it.
  5. Flashing kit. The manufacturer's flashing kit for your covering fitted, with the membrane collar and the top apron dressed under the course above.
  6. Make good. Tiles or slates cut in around the window, and the inside lined and ready for the plasterer.

Signs your roof window needs attention

  • Water at the top corners of the frame
  • Misting or condensation between the panes
  • A stiff, broken or sticking opening mechanism
  • Stained or rotten lining boards below the window
  • Draughts around the frame in winter
  • Damp on the ceiling under the window

Roof window types we fit

  • Centre pivot: The most common type. It turns on its middle so you can clean the outside glass from inside the room.
  • Top hung: Opens outwards from the top for a clear view, and is the type used where a window is needed for escape.
  • Conservation style: A slimmer, low-profile frame for period houses and conservation areas.
  • Replacement unit: A new window into the existing opening with a new flashing kit, often a few hours' work.

How long it takes

A new roof window into a tiled roof is usually one day. A straight replacement into an existing opening is often done in a morning.

What affects the price

  • Window size and type
  • Tile or slate covering
  • Trimming work in the rafters
  • Internal lining
  • Access

You get one fixed written price after the free inspection.

Aftercare

Clean the glass and the vent filter twice a year, check the seals and keep the gutter below clear so water is not held at the bottom of the flashing.

Photographs from our own jobs

Real work, photographed on site by our team. Tap a photograph to see the job it came from.

Recent work

Real jobs, photographed on site. No stock photography anywhere on this website.

See the photo gallery

What our customers say

Verbatim from our TrustATrader profile, which has 60 reviews at 4.94 out of 5.

5.0/5
Denis was friendly and professional, clearly explaining the work. The new insulated roof, fascias, and guttering look incredible. The team were efficient and respectful throughout. Highly recommend All Pro Roofing & Guttering.
LeoTrustATrader · October 2025
5.0/5
Always on time polite and very informative keeping me up to date with videos of the work taking place. I would definitely use them again.
AlistairTrustATrader · May 2025
5.0/5
Had a gutter fall off overnight with all the heavy wind! Popped over and fixed with no fuss, happy customer.
Thomas HealTrustATrader · April 2025

Read all 60 reviews See them on TrustATrader

How it works

  1. Tell Denis about the jobYour postcode and what needs doing, by phone or through the form.
  2. He looks at it properlyOn the roof or in the garden, not a guess from the pavement.
  3. You see the photographsPictures of what is actually wrong, sent to you.
  4. Fixed written priceOne figure, in writing, that does not move once we start.

Common questions

Do I need planning permission for a roof window?

On most houses a rooflight in the plane of the roof is permitted development, with limits on how far it projects. Conservation areas and flats are the exceptions, so check before ordering.

Can you replace an old Velux with a new one?

Yes, usually into the same opening with a new flashing kit, which is a one-day job on most roofs.

Why is my roof window leaking at the top corner?

That is the classic flashing failure, where the top apron has not been dressed under the course above. It is repairable without taking the window out.

Do you supply the window or do I buy it?

We supply and fit as standard. If you have already bought one, we fit it as long as the size and flashing kit are right for your roof.

Can a roof window go into a slate roof?

Yes, with the flashing kit made for slate. Slate is cut in around it rather than tiles, and the result is just as watertight.

Recent jobs like this

Finished work in our gallery, photographed by our team from start to finish.

Related services

Get a free written quote

Denis looks at the job, photographs it and sends you a fixed price. Fully insured, 60 reviews at 4.94 out of 5.

Free quote, fixed price and no sales visit.