The fascia is the vertical board at the eaves carrying the gutter. The soffit is the horizontal underside between the fascia and the wall. The bargeboard is the equivalent on a gable end. Together they close off and ventilate the roof structure, and the rafter ends behind them are what the job really depends on.
- Fascia is vertical and carries the gutter. Soffit is horizontal and ventilates the roof.
- Bargeboards are on the sloping gable edge, where there is no gutter.
- The soffit is not decorative. Block its ventilation and the roof structure suffers.
- What matters is behind all of them: the rafter ends and the wall plate.
The parts, named
| Part | Where it is | What it does |
|---|---|---|
| Fascia | Vertical board along the eaves | Closes the rafter ends; carries the gutter |
| Soffit | Horizontal underside, fascia to wall | Closes the eaves; carries ventilation |
| Bargeboard | Sloping board on a gable end | Closes the roof edge where there is no gutter |
| Verge | The roof edge at a gable | Weathers the tile edge; mortar or dry system |
| Eaves | The whole lower edge assembly | The junction of roof and wall |
| Wall plate | Timber on top of the wall | What the rafters sit on |
| Rafter feet | Ends of the rafters | What the fascia is fixed to |
| Eaves tray | Under the felt at the eaves | Carries water into the gutter |
| Over-fascia vent | Strip above the fascia | Lets air into the roof space |
| Soffit vent | Grille or strip in the soffit | Same, from underneath |
Rows six to eight are the parts nobody asks about and the ones that decide whether a roofline job is any good. They are all hidden behind the boards once the work is finished.
The fascia: more than a gutter bracket
The fascia is the board running horizontally along the lower edge of the roof, fixed to the ends of the rafters. It does three things.
It closes off the rafter ends, keeping weather, birds and insects out of the roof structure.
It carries the guttering. Every bracket screws into it, and a full gutter is heavy — which is why a soft or rotten fascia shows up as a sagging gutter long before anyone looks at the board itself.
It provides the lower edge detail for the roof covering, with the tiles or slates oversailing it so water is thrown into the gutter rather than running behind.
On older houses the fascia is timber, painted, and needs maintaining. On most modern and refurbished houses it is uPVC, which needs none. There is also a hybrid that causes a lot of trouble: capping, where a thin uPVC cover board is fixed over the existing timber rather than replacing it.
Capping is legitimate where the timber behind is genuinely sound, and it is a false economy where it is not — because the rot continues out of sight, the new board is fixed into decaying timber, and in a few years both have to come off. Whether capping is acceptable depends entirely on what is behind, which is why a quote given from the ground is not worth much.
The soffit: ventilation, not decoration
The soffit is the horizontal board forming the underside of the overhang, running from the bottom of the fascia back to the wall. It looks like trim. It is doing a structural-protection job.
It closes the eaves, stopping birds, wasps, squirrels and weather getting into the roof space.
It carries the roof ventilation. This is the important one. A cold roof — insulation at ceiling level, cold void above — must have air moving through it, or moisture from the house condenses on the cold underside of the roof. That air comes in at the eaves, and the soffit is where it enters, either through continuous vent strips, circular vents, or a vented soffit board.
Block that path and the consequences arrive the following winter: condensation dripping onto the insulation, mould on the rafters and felt, damp patches on the upstairs ceiling that get reported as a leak, and over longer periods rot in the rafter feet.
The commonest ways it gets blocked are a solid soffit fitted with no vents during a replacement, insulation pushed hard into the eaves from inside, or vents that were fitted and then painted or filled over.
Soffits come as solid board, hollow or multi-purpose board, or vented board. Which is used affects both the look and whether the roof breathes, and it is worth asking which is being quoted.
Bargeboards, verges and gables
Bargeboard
On a gable end, the roof slopes down to a sharp edge rather than to a horizontal eaves. There is no gutter there, so no fascia. The board closing that sloping edge is the bargeboard. Its job is to weather the edge of the roof structure and close off the void, and because it sits on a slope and takes weather on two faces it is often the first timber on a house to decay. It is also the most visible, since it frames the gable.
The verge
The verge is the roof edge itself at a gable — the line where the tiles or slates stop. Traditionally it is bedded in mortar, which weathers, cracks and eventually drops out in sections, letting water and wind under the tiles. A dry verge system replaces the mortar with interlocking caps mechanically fixed to the battens, and it does not need repointing. Where mortar verges are failing, replacing them at the same time as the roofline makes sense, because the access is already there.
Soffit at a gable
Where a gable has an overhang, there is a soffit under it too, and it needs the same consideration about ventilation and closing off as the eaves soffit.
Where the two meet
The junction of the eaves fascia and the bargeboard at the corner of a gable is a detail worth looking at on any quote. Done well it is a neat mitred corner with a proper stop end to the gutter. Done badly it is a gap, and gaps at that corner are a favourite entry point for birds and wasps.
What is behind, and why it decides the job
Everything above is the visible layer. The reason a roofline job can go badly is what sits behind it.
The rafter feet. The ends of the rafters, where they project past the wall. If water has been getting behind a failed fascia or spilling from a blocked gutter, these are what has been getting wet. Soft or rotten rafter feet cannot hold a fascia, and a new board screwed into them is fixed to nothing.
The wall plate. The timber bedded along the top of the wall that the rafters sit on. Decay here is more serious, because the roof is bearing on it.
The eaves tray or felt support. A tray that carries the roofing felt over the fascia and into the gutter. Without it, water running down the felt discharges behind the gutter and onto the wall. Older houses often have no tray at all, and fitting one during a roofline replacement is a genuine improvement.
The felt itself, which at the eaves is often perished and torn after decades of exposure.
This is why the useful question when comparing roofline quotes is not about the brand of uPVC. It is: will you remove the existing boards and inspect the rafter ends, what happens if they are rotten, and is an eaves tray included. A quote that is substantially cheaper than another has usually answered those three differently.
It is also why doing the roofline alongside roof work makes sense where both are due, because the eaves detail is where the two jobs meet.
What it costs
These are the roofline figures published across this site:
| Job | Typical Coventry guide price | Notes |
|---|---|---|
| Full uPVC fascia, soffit & guttering (semi) | £1,000–£1,500 | Supply & fit |
| Per elevation (fascia + gutter) | £400–£700 | Front or rear |
| Gutter clean & reseal | £80–£200 | Clears blockages, stops overflow |
| Labour | ~£30/hr | Qualified roofline fitter |
Timber repairs to rafter feet or the wall plate cannot be priced before the old boards come off, which is the one genuine unknown in a roofline quote. An honest quote states a rate for that work rather than pretending it will not be needed.
We take a board off and look at the rafter ends before quoting, because that is what decides whether capping is honest or a false economy.
Frequently asked questions
What is the difference between a fascia and a soffit?
The fascia is the vertical board along the eaves, fixed to the rafter ends and carrying the guttering. The soffit is the horizontal board forming the underside of the overhang, running back from the fascia to the wall. The soffit is also where roof ventilation enters.
What is a bargeboard?
The board closing the sloping roof edge at a gable end, where the roof has no gutter and therefore no fascia. Because it sits on a slope and takes weather on two faces, it is often the first timber on a house to decay, and it is highly visible since it frames the gable.
Do soffits need vents?
On a cold roof, yes. Air has to move through the roof space or moisture from the house condenses on the cold underside of the roof. That air enters at the eaves, through vent strips, circular vents or a vented soffit board. A solid unvented soffit causes damp, mould and eventually rot.
Is capping over old timber fascias acceptable?
Only where the timber behind is genuinely sound. Where it is not, the rot continues out of sight, the new board is fixed into decaying timber, and in a few years both come off. That is why a quote given from the ground without removing a board is worth very little.
What is an eaves tray?
A tray fitted under the roofing felt at the eaves that carries water over the fascia and into the gutter. Without one, water running down the felt discharges behind the gutter and onto the wall. Many older houses have none, so fitting one during a roofline replacement is a real improvement.
What should I ask in a roofline quote?
Three things: will the existing boards be removed so the rafter ends can be inspected, what happens if those rafter ends are rotten, and is an eaves tray included. A quote that is much cheaper than another has usually answered those differently rather than found a better price.
The boards are the visible part
We quote on what is behind them — rafter feet, wall plate and eaves detail — because that is what decides how long the job lasts.