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BH BA Harper Roofing

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Velux, Dormers & Roof Windows in Twickenham & Richmond

More light and more space upstairs — Velux roof-window installation and dormer roofing for lofts and conversions across Twickenham, Richmond upon Thames and South West London.

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Light, space and a watertight finish

A roof window transforms a dark loft, and a dormer turns dead roof space into a proper room. The roofing has to be spot-on, though — the flashings, cheeks and weatherproofing are where a badly fitted roof light or dormer starts to leak.

We fit Velux-style windows into the roof slope and build the roofing element of dormers and loft conversions, dressing everything in properly so it stays dry for the long term.

What we install

  • Velux and roof-window installation
  • Replacement of old or leaking skylights
  • Dormer roofs — pitched and flat
  • Roofing for loft conversions
  • Flashing kits and weatherproof detailing
  • Working alongside your builder or architect

Why it pays to use a roofer

Right first time

Proper openings, flashing kits and detailing so the window or dormer never leaks.

Weathertight

We seal cheeks, upstands and slopes correctly — the parts that matter most.

Sympathetic

Finishes that suit the borough's period and conservation-area homes.

Velux & Dormer FAQs

Do I need planning permission for a Velux or roof light? +
In most cases fitting a Velux-style roof window into the existing roof slope falls under permitted development and doesn't need planning permission — though conservation areas and listed buildings have extra rules. We'll flag anything you need to check before we start.
Do I need planning permission for a dormer or loft conversion? +
Many rear dormers fall under permitted development, but size limits, conservation areas and front-facing dormers often require planning. We can advise on the roofing side and work alongside your plans, builder or architect.
Can you replace an old or leaking skylight? +
Yes. We remove tired or leaking roof windows and fit modern, better-insulated units, re-dressing the flashing kit around them so they're properly weathertight.
Do you build the dormer roof as part of a loft conversion? +
Yes. We handle the roofing element of dormers and loft conversions — the pitched or flat dormer roof, cheeks, flashings and weatherproofing — either as a standalone job or working with your builder.

Roof windows & dormers across the area:

Roofers Twickenham Roofers Richmond upon Thames Roofers St Margarets Roofers Teddington

Adding light or space upstairs?

Free no-obligation quote on Velux windows, dormers and loft roofing.

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