Rooflights and skylights in Rottingdean, inside the conservation area

Rottingdean has a 2019 population of 14,324 and sits within the unitary authority of Brighton and Hove. It has the only parish council in the city, regained in 1996, but the parish council does not decide planning. Brighton and Hove City Council remains the planning authority.

That split matters to anyone with a roof project. The parish council is a local voice, and you may well want to know what it thinks. The decision on a rooflight still sits with the city council, using the city's own rules for the village. So when a neighbour says a rooflight went in on their street without fuss, the useful question is which side of the conservation area boundary their house stands, and when the work was done.

We begin every job by finding out who decides. For most addresses in the village that is the city council alone. For a house near the edge it can also involve the National Park, which is the next chapter. If you want the general rules before the local ones, planning permission for rooflights and skylights covers the national picture, and the rest of this page applies it to Rottingdean.

Rottingdean Conservation Area was designated in 1970, extended in 2012, and covers 16.85 hectares. An Article 4(1) direction covers it, confirmed on 24 April 2012. That direction is the detail that catches people out.

Normally a rooflight in a dwelling's roof slope can be fitted under permitted development, within limits on projection and position. An Article 4 direction removes some of those permissions. Under the Brighton and Hove directions, altering a dwelling's roof covering or adding rooflights needs planning permission. So inside the Rottingdean boundary, the simple question of whether a new skylight needs an application usually has a different answer from the one you would get a mile inland.

The council explains the position on its page on doors and windows, and the direction itself is published for this village. The practical rule for us is that the position is checked for the address, every time. A house just outside the line is treated differently from one just inside, and we would rather spend an hour on the map than build a quote on a wrong assumption.

The same statement records that clay tile roofs predominate, and that the roofs are steeply pitched, with chimney stacks on the skyline. Those two details decide a good deal about the rooflight that suits the village.

A steep pitch is friendly to a roof window. A window in a slope of that angle sits close to upright, which is a comfortable angle for the person standing under it and lets the sash open properly. It also sheds rain quickly, so the drumming you get on a shallow roof is less of a worry on the main slope. Our roof window installation page covers the units that suit a pitch like this, including the choice between a top-hung and a centre-pivot sash.

Clay tile is the other half of the decision. Tiles are laid in courses that overlap, and a new opening has to interrupt those courses tidily. On a clay roof the work is slow and careful:

1. The tiles around the opening are lifted and stacked in order.
2. The battens and felt are cut back to the frame size and supported.
3. The flashing kit is fitted to suit the tile profile.
4. The tiles go back, cut where they must be, so the courses run on without a visible seam.

Rottingdean has buildings that have been standing for a very long time. The Black Horse pub dates to the reign of Henry VIII, and the black wooden windmill on Beacon Hill was erected in 1802. They are landmarks, and neither is a house. But they show what kind of place this is. Age is part of the village's identity, and a new opening in a roof is seen against it.

That has a practical effect on how we plan. A rooflight that is a clear addition to a modern house is one thing. A rooflight on a house whose neighbours are centuries old has to look as though it belongs to the roof. We favour:

• A low-profile frame that sits close to the tile plane.
• A neutral colour that does not shout against clay.
• Openings placed on the rear or side slopes where the design allows.
• Fewer, better-placed units instead of a row of small ones.

Every quote from us comes with a written quiet spec, a one-page note for the room it is for. It records what we heard at the survey, the glazing build we propose and why, and how the seals and upstand are finished.

For a Rottingdean house, the survey would pay close attention to a few things. The first is what is over the room: a steep clay slope that sheds rain quickly, or a flat roof that holds it. The second is what the walls do. A flint house already keeps much outside sound away, so the roof is where any remaining noise arrives. The third is what the planning position allows, because that limits the size and style of the unit before acoustics comes into it.

From there the spec names the inner pane, its laminate, the thickness of each layer, the spacer bar and the gasket. It names the upstand height where there is one. It is a document you can read, compare and keep, and it is the thing we are held to. The page on the quiet spec shows the format, and what goes into a quiet rooflight specification explains the thinking behind each line.