The short answer
Dark grey or black, in a matt finish. That is the expected colour because it reads like the old cast iron rooflights that sat in slate and tile roofs for generations, and it makes the frame recede instead of outlining the glass. Another shade is sometimes agreed, but it is the exception, and it is settled with the planning officer before anything is ordered.
Why the colour is nearly always dark
The cast iron rooflight is the model every conservation unit is measured against, and cast iron was never bright.
Old foundry rooflights were painted in dull dark tones, or left to weather to a soft black-brown. On a pitched roof of slate or clay tile, the eye reads the frame as a thin shadow line, then reads the glass as a dark square. Nothing flashes or stands out. A white or pale frame does the opposite. It draws a bright outline around the opening and the roof suddenly looks as if it has a window cut in it.
That is why officers ask for a dark matt frame so routinely. It is not a matter of taste. Dark frames reduce the visual weight of the new opening, and matt surfaces avoid the glint that a gloss coat throws back when the sun is low. The list of things officers look at is on what a conservation officer looks for in a rooflight.
Trades often say black when they mean a charcoal, and charcoal when they mean a very dark grey. The shades run together in a photograph. On a sample, the difference is clear, and we bring samples to the survey so you can hold them against your own roof.
Matching the shade to the roof covering
The same frame reads differently on different roofs. The table shows the starting points we usually discuss.
| Roof covering | Usual frame | Why |
|---|---|---|
| Natural slate | Dark grey to black | Matches the blue-grey tone |
| Clay tile | Dark grey or black | Sits behind warm orange |
| Horsham stone slab | Dark grey, matt | Keeps the frame quiet against lichen |
| Weathered lead or zinc | Dark grey | Blends with the metal |
Each of these has its own page for the fitting details. Our notes on slate roofs, clay tile and tile-hung roofs and Horsham stone roofs cover how the frame meets each covering.
Finish, not just colour
Two frames in the same named shade can look very different on a roof because of the finish applied to them.
Aluminium units are powder coated. The coating can be smooth matt, textured matt or gloss. Smooth matt is the usual request, and a fine texture is sometimes chosen because it hides the marks of weather on the surface. Steel units start with a zinc or galvanised base, and then take either paint or a patinated finish that looks like aged iron. A patinated steel frame darkens a little over the first seasons and ends up looking like it was always there. The comparison between the two metals is on steel or aluminium conservation rooflights.
Glass matters as well. A dark frame makes a clear, slightly reflective pane look darker. A mirrored or strongly tinted pane next to it goes from dark to shiny, which works against the quiet look you were after. Clear low-emissivity glass is what most conservation projects use.
When a different shade is agreed
A planning officer has latitude, and a few situations call for something other than black.
- A roof of pale stone or weathered grey slate may take a mid-grey frame that sits closer to the covering.
- A roof with lead or copper details nearby may suggest a metal tone.
- A listed building may call for a specific paint colour recorded in its history, and the consent conditions can name it.
- A rooflight on a rear slope that nobody can see may be left to personal choice, as long as the council has no condition on it.
The inside is a separate decision. Many owners choose a white or pale reveal around the opening, since it bounces daylight into the room, while the outside stays dark. That split is common and needs no approval, because the inner face is not seen from the street.
A few owners ask for a coloured frame to match a door or a window. On a street of period homes it is usually declined, and it is better to ask before ordering than to replace a rooflight later. For new rooflights in conservation areas, see whether you have to use a conservation rooflight in a conservation area.
How we settle the colour with you
Colour is agreed at the survey and recorded before the order goes in, so nobody is surprised by a frame that looks different from the sample.
We stand on the roof or beside it and look at the covering in daylight. Slate can be blue, green or purple-grey depending on the quarry and the years, and clay tile fades from orange to a deep rust. A frame chosen from a catalogue photograph may sit well on one and look cold on the other. We bring finish samples and hold them against the tiles, then note the maker's reference for the shade on your quote.
If the house is in a conservation area, the same reference goes into the planning paperwork, where a council will often ask for it. That keeps the approval and the delivered product matched. Where consent has conditions, we follow them to the letter, and we say so in writing on the job sheet. The wider planning picture is in planning consent for conservation rooflights.
Colour queries from owners with period roofs
Is black the same as dark grey for planning?
Not always. Some officers accept either, and some specify one. A written note on the application, with a sample, avoids confusion.
Will a dark frame make the room hotter?
The frame is a small part of the opening, and it is the glass that admits the sun. Room warmth is better managed with the right glazing. See energy efficient rooflights for the options.
Can the frame be repainted later?
Powder coat is a factory finish and should not need repainting. Steel frames can take new paint at renewal, and the maker will tell you which product suits the coating.
Does the colour affect the quiet of the room?
No. Frame colour changes how the rooflight looks. Sound is settled by the glass build and the seals, which we write down in your quiet spec.
If you would like samples brought to the survey, get a quote. Our full service is described on the conservation rooflight installation page.