Skylight Installation in Orford

Orford asks a rooflight to do two things that are close to contradictory. It has to look like it belongs on a historic roof, which means low, small, dark framed and flush. And it has to survive salt-laden air off the Ore and the open sea beyond Orford Ness, which argues for a chunkier unit with a generous upstand and heavy weathering detail. Reconciling those two is the whole job here.

It is 16.6 miles from Ipswich, roughly 40 to 45 minutes across country. The Ness gives no shelter. It is a shingle spit, low and open, so the wind arrives across it having lost nothing.

Two consents, not one

This trips people up constantly. Planning permission and listed building consent are separate consents under separate legislation, and getting one does not give you the other. A rooflight on a listed building needs listed building consent whether or not planning permission is required, and permitted development rights do not apply to it at all. Work to a listed building without consent is a criminal offence, not a planning breach to be tidied up afterwards.

Separately, Orford sits in a conservation area, which restricts permitted development on the principal elevation and roof slope. Where an Article 4 direction applies, rights that would normally exist are withdrawn entirely, which can include rooflights on rear slopes that would be unremarkable in Ipswich.

What a conservation rooflight actually is

The term gets used loosely. What conservation officers generally want is a unit that reads as a historic roof light rather than a modern roof window, and that comes down to a few physical characteristics.

• Low profile. The unit sits close to the roof plane, projecting very little above the covering. On many historic roofs this single point decides the application. A standard roof window standing proud of the tiles reads as an addition from fifty metres away.
• A central glazing bar, echoing the cast iron lights originally put into these roofs.
• A cast or heavy steel frame in a dark finish, kept slim so the glass area reads correctly in proportion.
• Flat glass, flush or near flush, rather than a domed profile.
• Size and position. Smaller than a modern unit, placed to sit sympathetically with the openings below rather than centred on a room.

Several manufacturers make low-profile flat-glass units in this style and the good ones are well engineered. The catch is that sitting close to the roof plane, which is exactly what gets the consent, is also the hardest condition to weather at a site like this.

Why low profile and severe exposure fight each other

Height above the roof plane is a weathering asset. It keeps the glass edge and frame junction clear of water running down the slope. A conservation unit gives that up deliberately. Inland that is fine. At Orford, with driven rain arriving nearly horizontally off the Ness for hours at a time, water is pushed up under laps and lifted at the corners by wind pressure around the unit.

So the compensation comes from elsewhere. Deeper laps than the standard kit dimension. The underfelt collar dressed and taped into a continuous secondary drainage layer, so anything that does get past has a route out rather than a route into the rafter. Marine-grade 316L stainless fixings as standard, because standard A2 pits under chloride and shows as white bloom then rust weeping at every fixing point. Marine-specification coating on any aluminium, because ordinary powder coat chalks and lifts here years earlier than the literature suggests.

A conservation unit on this coast is a compromise, and the way to make it a good one is in the installation detail rather than the product catalogue.

Old roof structures and hand-made coverings

Historic roofs in Orford are not trussed. They are cut rafter roofs, often with irregular timbers by modern standards, sometimes reused from earlier structures, so any opening means trimming and supporting properly rather than cutting between two rafters and hoping. Battens can be split or partly decayed at exposed eaves. None of that is a problem if it is found at survey. It is expensive if it is found on the day.

The coverings are hand-made plain tiles and clay pantiles, and neither takes a standard flashing kit without thought. Hand-made plain tiles vary in thickness and camber across a single roof, so a flat side flashing does not seat evenly and the detail has to be dressed to the tile. Pantiles need a corrugated apron that drops into the roll. Salvaged replacement tiles are worth sourcing before work starts, because matching a hand-made tile afterwards is a long search.

Replacement only

Where an existing rooflight in Orford has failed, we replace it. We do not reseal, patch or repair. On a historic roof that is the sensible position, because opening up a failed unit is the only moment you get to see the timber and underlay beneath it. Putting an old unit back over unknown structure is a poor idea on a listed building.

Typical work here is pitched roof skylight installation in conservation units, VELUX, Keylite and Roto installation where a modern unit is acceptable on a hidden slope, and flat roof rooflights on later rear additions. Where thermal performance drives the job, see energy efficient rooflight installation.

Orford stock, from the quay to the market square

Orford is a small town with a long history and a roofline to match. Around the market square and down towards the quay sit timber-framed and colourwashed houses, brick cottages and a good deal of listed fabric, much of it looking straight out towards the Ore and the long shingle bank of Orford Ness beyond. The castle keep stands over the lot of it, and the conservation designation that comes with a place like this is tight. What that means for a rooflight is that the visible slopes are heavily constrained, the coverings are old and hand-made, and the structures beneath them are cut rafter roofs of real age, sometimes carrying timber reused from earlier buildings. None of that rules a rooflight out. It means the job is surveyed and specified with more care than a modern roof needs, and the consent position is settled before anything is ordered.

The Ness is the reason the exposure is severe despite the town sitting behind the river rather than on the open beach. It is a low shingle spit, and it shelters nothing. Wind and salt cross it and arrive at the Orford roofs having lost almost nothing on the way, which is why a historic low-profile unit here has to be weathered as carefully as a modern one on the open front.

Hand-made coverings, and why sourcing comes first

The coverings on the older Orford roofs are hand-made plain tiles and clay pantiles, and they behave nothing like a modern machine-made tile. Hand-made plain tiles vary in thickness, camber and colour across a single roof, so a flat side flashing will not seat evenly against them and the detail has to be dressed tile by tile to the individual covering. Pantiles need a corrugated apron that drops into the roll. The point that decides the programme, though, is matching. If tiles have to come off to form an opening and some break, as old brittle tiles do, replacements have to match a covering that may be a century or two old. We source salvaged tiles before the work starts rather than after, because hunting a hand-made match with the roof open is how a job stalls. On a listed roof that sourcing conversation happens at survey, alongside the consent one.

Underneath, the structure gets the same early attention. Cut rafter roofs of this age can have irregular timbers, split battens at exposed eaves, and members that were never sized for an opening. An opening is trimmed and supported into whatever is genuinely sound, and where the timber is doubtful we say so before a price is given rather than discovering it on the day.

Access at Orford is its own consideration. The lanes around the square and down to the quay are narrow and often busy with visitors to the castle and the river, parking close to a property is limited, and some of the listed cottages have no side access at all, which means a scaffold comes off the street with the permissions that involves. On a historic roof we would rather over-scaffold and work slowly than rush a brittle hand-made covering, so the access arrangement and its cost are settled at survey and written into the fixed quote. None of this makes Orford a difficult place to work. It makes it a place where the planning of the job matters as much as the fitting of it, which suits the way we prefer to work anyway.

Getting a price

Every skylight installation Orford job is surveyed on the roof before a figure is given, and the figure holds unless the specification changes. A 10-year workmanship guarantee, fitted to current Building Regulations, by installers with 25 years in the trade and a good deal of it on old Suffolk roofs.

We cover the same stretch at Hollesley, Snape and Aldeburgh. The full list is on areas we cover.

Request a fixed quote for Orford. Tell us whether the building is listed and we will start from what is likely to be consented.