Gutters, soffits and fascias in Farnborough

Rooflines checked from the gutter back to the rafters

We look along the gutters, fascias and soffits, test the timber behind them and the underlay at the eaves, then explain what has failed and how to fix it.

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Brown tile roof with white fascia, soffit and gutter over a flint wall

Signs the roofline is letting water in

Water spilling over the gutter in rain
Green streaks or damp patches down the wall
Flaking paint or soft spots on the fascia
Gutters sagging away from their brackets
Birds getting in behind loose soffit boards

Roofline materials we fit and repair

White plastic gutter clogged with leaves and moss under a wet tiled roof

uPVC

A plastics retailer puts uPVC fascia boards at 20 to 40 years.

Timber

Painted softwood boards, still found on older and listed houses.

Moss on a tile roof edge above a white fascia and black gutter

Cast iron

Heavy period guttering, kept or matched on older and conservation homes.

Roofline work we carry out in Farnborough

Fascia replacement
Soffits and vents
Gutter repairs
Downpipes and outlets
Bargeboards and verges
Gutter clearing

Clear, repair or replace the roofline?

Clear

Gutters overflow, but the joints, brackets and boards behind them are sound.

Repair

One joint, bracket or short length of board has failed and the rest holds.

Replace

The timber behind is soft along the run, or the gutters keep leaking after resealing.

Roofline, the figures

What the standards say about your roofline

Ventilation gaps, gutter falls, asbestos guidance and consent rules from BSI, the HSE, manufacturers and local councils, each one read against the boards and channels along your eaves.

Chapters of this guide and the figure each one turns on
No.	Chapter	The figure it turns on
01	The parts that make up a roofline	Dry verge systems: BS 8612:2018
02	Rotten fascias: cap over or replace	uPVC fascia: 20 to 40 years
03	Soffit vents and air at the eaves	25mm at 15° or less
04	Asbestos board in older soffits	Built before 2000: assume asbestos
05	Gutter falls, outlets and downpipes	1mm of fall for every 600mm
06	Conservation streets, consent and scaffold access	Nine conservation areas in Rushmoor

Chapter 01 of 06

The parts that make up a roofline

Each roofline part, its job and the standard or figure behind it
Part	What it does	Standard or figure
Fascia	Board across the rafter ends that carries the gutter	uPVC: 20 to 40 years (retailer figure)
Soffit	Closes the underside of the overhang back to the wall	HSE lists AIB among external soffit materials
Gutter	Collects run-off from the bottom course of tiles	Fall of 1mm for every 600mm (Brett Martin)
Downpipe	Carries water from the outlet down to the drain	BS EN 12056-3:2000, current
Bargeboard	Covers the roof edge at a gable end	Dry verge systems tested to BS 8612:2018

Source: Plastic Centre (a uPVC retailer); HSE asbestos guidance; Brett Martin; BSI Knowledge; all accessed 28 October 2026

The roofline is everything along the edge of the roof that you can see from the garden or the street. It looks like trim, but each part has a job in moving rain away from the walls. The fascia is the long board fixed across the ends of the rafters, the sloping roof timbers. It carries the gutter brackets and, on many houses, supports the bottom edge of the underlay, the membrane that sits under the tiles. The soffit is the board beneath the overhang, closing the gap between the back of the fascia and the wall.

The gutter collects the water running off the bottom course of tiles, and the downpipe takes it down to the drain or soakaway. At a gable end, where the wall rises to a point, the roof edge is covered by a bargeboard rather than a fascia, and the tiles above it finish at the verge, the edge of the slope over the gable.

How one failing part leads to the next

These parts lean on each other. A gutter that has dropped at one end holds water in a pool instead of sending it to the outlet. That water spills over the front in heavy rain, or runs back behind the gutter and soaks the fascia. A painted timber fascia that stays wet rots from the back, where nobody sees it, and a soft board cannot hold the brackets tight. The gutter then drops further. By the time the paint lifts, the damp can have reached the rafter ends behind.

The same chain can start at the top. If the underlay at the eaves has perished, rain that gets past the tiles drips down behind the fascia instead of into the gutter. Damp high on an outside wall, or on a bedroom ceiling next to the wall, can come from either route, and working out which one it is takes up much of a roofline survey.

Roofline repairs around Farnborough and nearby towns

We work on rooflines on houses, bungalows and small blocks across Farnborough, Cove and North Camp, and out to Fleet, Aldershot, Camberley and Bracknell. The work runs from clearing and resealing a single length of gutter to stripping and renewing every board along the eaves. Bigger jobs usually need scaffolding, because fascias and soffits are worked from above as well as below, and the bottom row of tiles may have to be lifted to reach the underlay.

The table sets each part beside one figure or standard. The uPVC lifespan comes from a retailer, so treat it as a seller's figure. The gutter fall is a manufacturer's fitting guide, and the drainage standard is the British Standard for roof drainage layout. Our pitched roofing service covers the tiles, battens and underlay above the eaves, where a roofline fault sometimes begins.

Chapter 02 of 06

Rotten fascias: cap over or replace

20 to 40 yearsA retailer's typical life for a uPVC fascia board
BS 5534:2014+A2:2018Slating and tiling code of practice, current
AD C para 6.2Roofs should resist rain reaching the inside

Source: Plastic Centre, a uPVC retailer and an interested party; BSI Knowledge; Approved Document C, 2013 edition; accessed 28 October 2026

Each soft section of fascia is marked before a route is chosen.

When a timber fascia has rotted, there are two ways to deal with it. Capping, sometimes called cladding, fixes a thin uPVC board over the face of the old timber, so the rot is covered rather than removed. Full replacement strips the old fascia, soffit and gutter back to the rafter ends, repairs whatever is found there, and fixes new boards to sound timber. Both leave a clean white roofline on the day. They differ in what is left behind it.

Why we lean towards full replacement

Capping relies on the old board underneath. If that board is already soft, the new cover and the gutter brackets are screwed into failing wood, and the rot carries on behind the plastic with no air to dry it out. Whatever caused the rot, a dropped gutter or perished underlay, is still letting water in. Capping can be a fair choice where the timber is hard, dry and straight along its whole length and only the paint has given up. We test the board before saying so.

Full replacement costs more and takes longer, but it lets us see the rafter ends. On older houses they can be wet or split where years of overflow have soaked them, and a new fascia needs sound timber to fix into. It is also the moment to deal with the bottom of the underlay. On many older roofs the felt at the eaves has rotted where it hangs into the gutter, so water running down the underlay drips behind the fascia. An eaves protection tray, a rigid strip laid under the bottom course of tiles, carries that water out into the gutter instead. Our guide to fascia capping against full replacement takes the decision step by step, and eaves protection trays have a guide of their own.

What the codes ask of the eaves

The eaves are where the roof covering and the roofline meet, so a fascia change touches the roof itself. BS 5534:2014+A2:2018, still current, is the slating and tiling code, and it sets out how the bottom course and the underlay are laid and fixed. Approved Document C, at paragraph 6.2, asks roofs to resist rain getting through to the inside of the building, which is the job a failed eaves detail has stopped doing.

The range of 20 to 40 years for a uPVC fascia board comes from a plastics retailer, an interested party, so read it as a seller's figure rather than an independent test. A board's life also depends on what it is fixed to and how it was fitted. A new fascia on rotten rafter ends will not reach either end of that range, however good the board.

Chapter 03 of 06

Soffit vents and air at the eaves

HR underlay, pitch 15° or less25mm
HR underlay, pitch over 15°10mm
LR underlay, well-sealed ceiling3mmNormal eaves construction only

Source: Marley ventilation guidance under BS 5250:2021, accessed 28 October 2026

A house with its insulation laid across the loft floor has what is called a cold roof: the insulation lies below the roof space, and the roof space above it stays at outdoor temperature. Warm, damp air from the rooms below finds its way into that cold loft through gaps around hatches, pipes and downlights. If it cannot get out again, it condenses on the underside of the underlay and the roof timbers, and over time that moisture soaks into rafters and battens. Air moving in at the eaves and out higher up carries it away.

What the gaps on the chart mean

The bars show the eaves ventilation Marley gives under BS 5250, the code of practice for managing moisture in buildings. The figure depends on the underlay. HR underlay is the older non-breathable kind, and a cold roof laid with it needs a continuous gap of 25mm along the eaves at a pitch of 15° or less, and 10mm at pitches above 15°. LR underlay is a breather membrane. With a well-sealed ceiling, Marley says the small gaps left by normal eaves construction, about 3mm, can be enough, subject to third-party certification of the membrane.

Two underlays, two eaves rules

HR (non-breathable) underlay	25mm or 10mm continuous gap, by pitch
LR (breather) underlay	Normal eaves construction, about 3mm
Condition on the LR route	Third-party certification and a well-sealed ceiling

On the survey

We look into the loft at the eaves to see whether insulation has been pushed against the opening and blocked the air path.

That gap has to come from somewhere, and on a roofline it comes through the soffit or over the top of the fascia. A vented soffit has a slot or a row of small grilles along its length. An over-fascia vent sits on top of the fascia board, under the felt or membrane, so air passes in above the gutter. Either way, the air needs a clear path past the insulation and up into the loft, which is why rafter trays are fitted at the eaves to hold the insulation back from the opening.

Where ventilation goes wrong at a roofline change

The common faults are simple ones. New solid soffits fitted where the old ones had vents. Loft insulation, topped up over the years, pushed right into the eaves so it blocks the airway. An old roof with HR felt and no eaves vents at all, where the loft has always run damp in winter. A roofline replacement is the easiest moment to put this right, because the boards are off and the eaves are open, and the vents cost little once access is in place. Putting it off means taking the new boards down again later.

Approved Document C treats ventilation of cold deck roofs as one way to satisfy its condensation rule, and adds that a porch or bay window roof, being small, may manage without. BS 5250:2021 is the current edition of the code and is listed as under review. Our guide to soffit and over-fascia ventilation explains the vent types in more detail.

Chapter 04 of 06

Asbestos board in older soffits

Before 2000Built or refurbished then: HSE says assume asbestos is present
AIBAsbestos insulating board, listed by HSE in external soffits
40 yearsHow long registers of notifiable work are kept
Double-wrapHow HSE says asbestos waste is packed and labelled

Source: HSE asbestos guidance, including A14 and EM9, accessed 28 October 2026

Soffits are one of the places the HSE names for asbestos insulating board, usually shortened to AIB. It was used for external soffits because it was flat, rigid and resisted fire. The HSE adds that AIB and a non-asbestos board are hard to tell apart by eye, and that, for anything built or refurbished before 2000, asbestos should be assumed present. That covers a great many houses around Farnborough, including the Cove estates of the 1950s and 1960s and the Southwood housing of the 1980s.

Why the soffit is checked before anything else

The risk with AIB comes from cutting, drilling and breaking it, which releases fibres. So on any roofline built before 2000, the soffit board is identified first, before anyone takes a saw or drill to it. Where it may be AIB, a sample is tested. The answer decides how the job is done. A board that tests clear is cut and replaced like any other soffit. A board that tests positive changes the method, the timing and who carries out the removal, and you hear about that before the work is booked.

The HSE sorts asbestos work into three groups. Short-duration work to remove AIB as part of a refurbishment is notifiable non-licensed work. Where the risk assessment shows AIB work running beyond short duration, it becomes licensable, and is carried out by a firm the HSE has licensed for it. Asbestos cement is different again: gutters and downpipes made of it count as non-licensed work if they are handled and removed carefully without being broken up, even when weathered. Breaking them up substantially turns that into notifiable non-licensed work.

Where the waste goes

Asbestos waste is never mixed with general rubbish. The HSE says it is double-wrapped and labelled. The household exemption for hazardous waste specifically leaves out asbestos waste, so it travels with a consignment note, and the carrier needs upper-tier registration. Notifiable work also has paperwork that lasts: registers of work, the health records, are kept for 40 years.

None of this means an older soffit is a reason to panic. Undisturbed board in good condition is not releasing any fibres. It matters when the roofline is about to be stripped, cut or drilled, and that is the point at which we raise it with you. If a test comes back positive, we tell you what kind of work it is before we price anything, so the quote reflects how the board has to be removed. Our post on asbestos in soffits around Farnborough sets out what to look for and what to ask before work starts.

Chapter 05 of 06

Gutter falls, outlets and downpipes

Gutter fall, the drainage standard and the rain at South Farnborough
Measure	Figure	Source
Gutter fall	1mm for every 600mm	Brett Martin fitting guide
Roof drainage layout	BS EN 12056-3:2000, current	BSI Knowledge
Annual rainfall, South Farnborough	714.74 mm, 1991 to 2020 average	Met Office
Days with 1mm or more	118 a year on average	Met Office
Air frost	52.93 days a year on average	Met Office

Source: Brett Martin; BSI Knowledge; Met Office, South Farnborough station, 1991 to 2020 averages; accessed 28 October 2026

Each run is checked for fall towards its outlet before any bracket moves.

A gutter is not laid dead level. It runs at a slight slope towards its outlet, so water moves along it instead of sitting in it. Brett Martin's fitting guide gives a fall of 1mm for every 600mm of run. Over a 6m length of eaves that is a drop of 10mm, small enough that you would not see it from the ground. When brackets work loose or the fascia behind softens, a run can lose that fall or tip the wrong way, and water collects in the low spot.

Why a gutter overflows

Standing water is where problems start. It holds leaves and silt, which block the outlet, and a blocked outlet makes a sound gutter overflow in the first heavy rain. Joints between lengths are sealed with rubber gaskets in union clips, and those seals harden and split with age, so a gutter can drip at every joint while the plastic itself is fine. A downpipe blocked lower down backs up into the gutter above, and the overflow shows up as a green stain on the wall or splashing at ground level.

The Met Office station at South Farnborough averages 714.74 mm a year in rainfall, spread over 118 days with 1mm or more, and around 53 days of air frost, on its 1991 to 2020 figures. Frost matters too: water left standing in a blocked gutter can freeze and push joints apart. Regular maintenance, clearing the gutters and checking the outlets, often cures an overflow without any new parts at all.

Downpipes, outlets and rainwater layout

BS EN 12056-3:2000, still current, sets out how roof drainage is laid out and calculated: the sums behind how many outlets and downpipes a roof needs for its area. On a house, the question we ask is simpler: does each run reach an outlet, and can each downpipe take what arrives? Extensions often add a roof that drains into an existing gutter that was never sized for it, and the old outlet becomes the weak point. Where a downpipe empties onto a lower roof instead of into a drain, that roof takes the whole run's water, so we check the tiles or flat covering where it lands.

Fall and standard

1mm per 600mmBrett Martin's fall for a gutter run

BS EN 12056-3:2000Current British Standard covering how roofs drain

Source: Brett Martin; BSI Knowledge

When we refit a gutter, each run is set back to its fall towards the outlet, the brackets are spaced along a sound fascia, and the downpipes are checked down to ground level. Our guide to how much fall a gutter should have covers the measurement in more detail. Where a leak has already let water into the house, our emergency and general roof repairs service makes the roof safe first.

Chapter 06 of 06

Conservation streets, consent and scaffold access

NineDesignated conservation areas in Rushmoor, as the council lists them
FourBasingstoke and Deane areas where roofline replacement needs permission
s169Highways Act 1980: scaffold on a highway needs a licence
10 clear working daysHampshire County Council's minimum notice for a scaffold licence

Source: Rushmoor Borough Council; Basingstoke and Deane Borough Council; legislation.gov.uk; Hampshire County Council; accessed 28 October 2026

Replacing a gutter or fascia with one that looks the same is not normally development under planning law, because work that leaves the outside of a building looking materially the same falls outside the Town and Country Planning Act's meaning of development. Swapping painted timber and cast iron for white uPVC does change the appearance, and on some buildings that brings in the planning team.

Period gutters and conservation areas

Rushmoor has nine designated conservation areas; Farnborough Hill, St Michael's Abbey, South Farnborough and Farnborough Street are among them. In Basingstoke and Deane, Article 4 directions in four town-centre conservation areas mean the replacement of fascias, soffits or guttering now needs planning permission. Hart's guidance lets repairs to an unlisted building go ahead without planning permission when they copy the original exactly, in matching materials and the traditional way. Rushmoor's overview notes that flats have no permitted development rights, so roofline work on a block that changes its appearance needs permission. For a listed house, listed building consent is needed for works that affect its character. Where any of this applies, ask the council's planning officers before the order goes in, and keep their reply with the house papers. Our guide to cast iron guttering on period homes covers repair and matching.

Birds and bats use roofline voids too. The Wildlife and Countryside Act 1981 makes it an offence for anyone intentionally to damage, destroy or take a wild bird's nest while it is being built or used. Bats are covered as well: GOV.UK names roof repair and replacement as work that can affect them, and their breeding sites and resting places are fully protected. Work on an occupied stretch waits, and we look for signs of use on the survey. If a nest turns up partway through a job, that section is left alone and the rest of the eaves carries on.

Scaffold licences around Farnborough

Fascia and soffit work on a two-storey house usually needs scaffolding. If any of it stands on a pavement or road, the highway authority has to license it under section 169 of the Highways Act 1980. For Rushmoor and Hart addresses that authority is Hampshire County Council, and the council expects the scaffolder, not the householder, to make the application. Hampshire County Council wants at least ten clear working days' notice before a licence begins, and charges £211.90 for the first two weeks and £72 for each further two weeks. On the Surrey side, we organise the licence together with the scaffolder and confirm the dates with you. Scaffolding standing wholly on your own land, a drive or back garden for instance, needs no licence at all.

Standards and guidance behind these figures

BS 5250:2021Managing moisture and ventilation in buildings
BS EN 12056-3:2000How roof drainage is laid out
Approved Document CResisting rain and condensation in roofs

See your own roofline set out

Send us a photo of the gutter or fascia that worries you, and we will survey the whole eaves line before pricing it.

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Typical UK prices for roofline work

Typical UK prices for roofline work
Job	Typical UK range
Clear every gutter at the front and rear of a house (Which?, ex VAT)	£75 to £350
Replace guttering (MyJobQuote)	£1,000 to £1,600
Cap fascias and soffits, three-bed semi (MyJobQuote)	around £800
Replace concrete gutters (MyJobQuote average, January 2026 page)	average £2,400

Source: Which? cost guide (November 2025, prices ex VAT); MyJobQuote (September and October 2026; concrete gutters January 2026)

These are national cost guide ranges, not Fortis prices. Your own figure is a single written total, given once the survey is done; check that any other quote you hold includes VAT and scaffolding.

Roofline guides and answers

Short reads on fascia capping, soffit vents, gutter falls, cast iron and asbestos board, for owners weighing up work along their eaves.

Guide · 9 min read

Fascia Capping vs Full Replacement

Capping puts a plastic skin over the boards you already have, and replacement takes them off. One is…

Guide · 9 min read

Soffit and Over-Fascia Ventilation

A loft needs a steady trickle of air to carry damp out. The eaves are where it comes…

Guide · 10 min read

Eaves Protection Trays and Fascia Replacement

The line where the roof meets the gutter is where rain and tired felt collide. An eaves protection…

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Your roofline questions, answered

How much does it cost to have soffits, fascias and guttering fitted?

National guides give parts of the picture: MyJobQuote puts gutter replacement at around £1,000 to £1,600, and capping fascias and soffits on a three-bed semi at around £800. A full strip and replace adds work those figures leave out, such as new soffits, vents and scaffold. The length of eaves, the access and the timber behind decide it.

How long do uPVC soffits and fascias last?

A uPVC retailer puts fascia boards at between 20 and 40 years, a seller's range rather than an independent test. Where a board lands in that band depends on what it is fixed to. A new fascia screwed onto wet rafter ends or rotten timber will fail early, which is why we check behind it first.

Do roofers replace guttering?

Yes. Gutters hang on the fascia at the foot of the roof, and plenty of leaks at the eaves start with the tiles, underlay or fascia rather than the gutter itself. A roofer can see both sides of that joint. We replace gutters, downpipes and outlets, and check the eaves course above them on the same visit.

How often does guttering need replacing?

There is no fixed interval. Gutters are replaced when joints keep leaking after resealing, when brackets have failed along the run, or when the fascia behind has to come off anyway. Clearing is a separate job: leaves and moss build up every year, and a blocked outlet can make a perfectly sound gutter overflow.

Do I need scaffolding to replace fascias and soffits?

On a two-storey house, usually yes, because the boards are worked from above and the eaves tiles may need lifting. Scaffold standing on a pavement or road has to be licensed by the highway authority; on private land no licence is needed. Our written price already covers the scaffold, so it does not arrive as a separate charge later.

Can soffits be replaced while birds are nesting behind them?

Not on that stretch. Under the Wildlife and Countryside Act 1981, intentionally damaging or destroying a wild bird's nest that is being built or used is an offence, and GOV.UK says no licence exists for development or construction. Work on that section waits until the birds have finished with the nest.

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