Skylights & rooflights in Patchway Postwar lofts, new-build extensions and a stuffy landing or two

Where the roof has no gable window at all, the rear slope may need two roof windows side by side, or a larger single unit, so that the room has a way to breathe as well as a way to see out. We measure between the rafters and say honestly whether a pair or one wide unit gives the better result. Getting that choice right at survey stage avoids cutting more of the roof structure than the job needs.

Furniture changes the answer as well. A bed pushed against a sloping ceiling needs a window that does not swing into it, and a desk under the slope wants a handle that can be reached from a chair. We note where the furniture will stand before we mark out the opening, because the best position on paper is not always the best one in the room.

Choosing between opening and fixed

Not every unit in a loft needs to open. A fixed rooflight over a stair, or in a slope that a neighbour overlooks, can be the better pick: it costs less and it has no handle to leave unlatched. The usual split in a converted Patchway loft is one opening roof window for the room and a fixed one or a sun tunnel for the landing below.

Roof pitch matters. The slopes on these mid-century houses are generally gentle, and our guide to minimum pitch for a roof window explains why a lower slope can change the kind of unit we recommend. On a low pitch, a top-hung window can be a poor match because the sash swings out and sits close to the roof surface, while a centre-pivot opens in a way that suits the shallower angle.

Planning is rarely a worry on streets like these, but it is worth confirming. Conservation areas are the exception in a town like Patchway rather than the rule, and our planning guide sets out when permission might be needed. If you are in any doubt, South Gloucestershire Council can say whether anything applies to your address before we start.

Fitting a whole new window in an existing roof is notifiable building work; the Building Control side is ours to arrange as part of the job. The details sit in our Building Regulations guide, and each quote lays the opening choices out clearly so you can weigh them against one another.

The new streets also tend to have the tallest ceilings, which is good for a feeling of space and awkward for anything that has to be reached. A handle mounted at ceiling height on a vaulted extension will simply never get touched. That is why the question of how a unit opens deserves as much thought as where it sits, and why every quote we write lists the opening choices side by side: manual, electric, or solar, with or without a rain sensor.

Chalets and bungalows under the slope

Patchway has its share of bungalows and chalet bungalows too. Where one has been extended into the roof, a roof window does a second job beyond airing the room. Where a Patchway bungalow has been extended upward, the same window can be that room's escape route, so the opening's width and the sill's height above the floor both count. Our page on roof windows as an escape route explains the position, and we check it at the survey rather than leave it to chance. A converted loft on a two-storey house is another matter, because escape there comes from a protected stair and the window simply lights and airs the room.

Older rooflights on extensions from earlier decades are another part of the picture. Some have clouded between the panes, and the sealed unit has failed. If the frame is sound, replacing just the glass unit is possible, and if the frame has gone soft, a complete new unit is the sounder choice. Our misted and failed rooflights page sets out the options. Replacing a whole rooflight is notifiable, while replacing only the sealed glass in an existing frame generally is not.

Bathrooms in the newer houses are often fitted with a mechanical extractor and nothing else, which is fine until the fan is switched off. A small roof window or sun tunnel for a bathroom adds daylight and, in the case of the window, a way for steam to leave by itself. It does not replace the fan, and nobody should expect it to, but it gives the room something to fall back on.

Energy performance matters on any extension, and rooflights take their share. A roof window must meet the window limit and a rooflight a slightly different one, so the glazing specification is part of every quote. The energy efficient rooflights hub explains what the figures mean in plain terms.

Beyond Patchway itself we work in the neighbouring areas, including Bradley Stoke and Almondsbury, and our costs guide explains what drives the price.