Bristol Victorian terraced houses with slate roofs and bay windows on a hill

Roofers in Warmley

Warmley lies north-west of central Bath, 9.5 road miles away, and is a village the brass and zinc trade left with some unusual masonry and a Grade II* listed house and stable block of the mid 18th century. That listed house and stable block set the tone for roof work in the village, and each job opens with a free survey and closes with a fixed price that you hold on paper.

Local roofs

Warmley: Champion's works, a slag Neptune and a village built around both

Warmley's history is bound up with industry. William Champion, a Quaker industrialist, established the Warmley Works in 1746, and the village that grew around the works still carries its marks. The best known is the statue of Neptune in Warmley Gardens, listed Grade II and made mainly from waste slag, set up by Champion around 1750. It is a useful reminder of how builders in this corner of South Gloucestershire used what the furnaces left behind, and of why masonry here can behave differently from ordinary stone.

Warmley House and its Stable Block date from the middle of the 18th century, stand in Siston parish and are listed Grade II*. Stable blocks are often long, plain buildings under a large roof, and that scale produces its own faults: long runs of valley and gutter, a lot of ridge and heavy timbers that carry the weight. Where the work affects a listed building, South Gloucestershire Council is the body to ask, and it is better asked before a quote is agreed.

Modern Warmley is also a place people pass through. The A420 runs along it and connects to the Avon Ring Road just west of the village, while the Bristol and Bath Railway Path runs along the old Midland Railway trackbed, with the former station now a cafe and the signalbox opposite. Roofs close to a cycle route and a trunk road collect leaves, grit and traffic dust, and they need gutters that stay clear.

Our method is the same for any building here. Someone climbs up, takes pictures of the roof itself, records the faults in everyday words and sends you a price that stays fixed.

Council
South Gloucestershire Council
From central Bath
9.5 road miles, north-west
Warmley House and Stable Block
Mid 18th century, Grade II* listed
Neptune statue, Warmley Gardens
Grade II listed, made mainly from waste slag
Warmley Works
Established 1746 by William Champion

What we find

Clogged gutters, cemented masonry and long valleys

Long gutters and clogged outletsTrees along the old railway line drop leaf and seed into the gutters nearby. We clear the run, test the falls with water and look for joints that have opened, since overflow lands on the wall beneath and keeps it wet.
Cement on old masonryStacks and copings on the older buildings tend to have had a hard repair at some stage. We tap the joints, look for crumbling stone beside a rigid mortar line and judge whether it has to be raked out.
Large roofs with long valleysOn a big roof, one valley drains two whole slopes. We lift the edge tiles beside it, look at the lining for tears and check that the debris of past autumns has not built up into a dam.

Warmley House, its stable block and listed roofs

A Grade II* building from the mid 18th century is repaired slowly, and with the council in the conversation.

A Grade II* listing sits among the top few per cent of protected buildings, and Warmley House and its Stable Block carry it. The roofs on such buildings are part of what was judged worth protecting, so the covering, the timbers and even the line of the gutters count as historic fabric. Altering them calls for consent from South Gloucestershire Council as the planning authority. Putting back the same material in the same way may need little discussion, but have that conversation before the scaffold goes up.

A stable block roof tends to be simple in form and large in area. Where no chimneys or dormers interrupt it, the main enemies are time and water at the junctions. We look at the ridge line for sag, which can point to a timber that has moved. We look at the eaves, where the lowest rafters sit closest to the rain, and at the valleys and parapet or box gutters if the building has them. Box gutters are lead-lined channels sunk into the roof structure; parapet gutters do the same job behind a wall. Neither shows a fault until a ceiling stains.

The first decision on any roof like this is whether it can be repaired. Historic timbers are valuable and replaced only when they have to be. A section of rotten wall plate or rafter foot can often be repaired by scarfing in new timber, joined to the old, rather than renewing the whole member. We tell you which parts must go and which can stay.

Matching is the second decision. If the covering is natural slate, new slates are chosen for size and colour. If it is clay, the replacements are matched for colour and profile. A change from one material to another changes the building's character, and the listing will almost certainly make it a consent question.

If you manage a large property or a group of buildings, our roof inspections work gives you a written condition record that can sit behind a repair plan.

Slag, lime and the masonry the works left

Champion's neighbourhood was built with industrial by-products, and hard modern mortar is hardest on them.

The Neptune statue in Warmley Gardens is made mainly from waste slag, erected by William Champion around 1750. It is a statue and not a house, and nobody should assume a given roof sits on slag. The clock tower Champion built around 1746 also makes extensive use of recycled black slag blocks, so this was a place where unusual materials went into walls as well as ornaments, alongside the ordinary stone and brick. When a stack or a parapet is built of mixed material, repointing in the wrong mortar can do damage that a plain brick wall would tolerate.

The rule is old, and it holds for most traditional masonry: the joint ought to be softer and more porous than the units either side of it. Lime mortar accepts a little movement and lets moisture escape through the joint. Cement is hard and tight, so water in the wall escapes by way of the stone or brick surface instead, and the masonry is what erodes. The Bath Preservation Trust pointed this out in a casework comment on one listed chimney in Bath, where the use of cement may have worsened stone damage.

On a chimney stack the weak points are the same wherever the stack stands. The flaunching, the sloped mortar cap bedding the pots, cracks and lets water into the shaft. The pointing weathers back. The lead flashings where the stack meets the roof lift at their edges, and the soakers, which are the lead tabs that interleave with the tiles at the side of the stack, corrode out of sight. We check each part and repair only what has failed.

If the stack has leant, cracked across or lost bricks at the top, a rebuild above the roof line may be cheaper in the long run than repeated patching. National cost guides put a stack repair between £500 and £2,000 and a rebuild above that (MyBuilder, 2026), and the fixed price after the survey replaces the guesswork. The options are laid out in order under chimney repairs.

Myth

A strong cement repair on an old stack is the safest way to stop water getting in.

Fact

Hard cement stops the wall breathing, so moisture is pushed out through the surrounding stone or brick, which then decays beside the joint.

Gutters beside the railway path and the A420

Leaf, grit and traffic dust all end up in the same place, and the water has nowhere to go.

The Bristol and Bath Railway Path follows the line of the old Midland Railway through Warmley, and anyone who lives or works alongside it knows how much green there is. Where trees grow beside the path, what they drop lands on the roofs nearby. The A420, which runs through the village, adds a film of dust to everything nearby. Together they make gutters one of the most useful places to start.

A blocked gutter does damage in a particular order. The water fills the channel, spills over the front and streaks the brickwork below, so the first sign is a green or dark stain on the brickwork. If the overflow goes backwards into the eaves instead, it soaks the fascia board, then the soffit, then the rafter ends. By the time a ceiling is marked, the timber has probably been damp for a long while. We clear the gutter, flush it, and test the fall by watching where the water stands.

Choosing the right material matters on a long run. Plastic is light and cheap to renew. Aluminium holds its shape and takes a baked finish. Cast iron suits older houses and asks for regular painting. Whichever it is, the joints are the weak points, and a few extra brackets are often worth more than a new run.

Fascias and soffits need the same attention, since they hold the gutter up and close the gap under the eaves. Rot in a fascia board means the gutter has probably been dripping on it for some time. Cost guides report £30 to £70 a metre for guttering and £80 to £150 a metre for fascia (MyBuilder, 2026); the written price after our survey covers your actual run, not an average. Details sit on the gutters, soffits and fascias page.

Gutter materials compared

MaterialSuitsWatch for
uPVCModern houses and extensionsBrittle with age, joints that creep apart
AluminiumLong runs and exposed positionsDents, and sealant at the joints
Cast ironOlder and listed buildingsRust at the joints, needs repainting
Lead-lined boxBehind parapetsSplits at laps and drips

Flat roofs, extensions and commercial buildings on the main road

Warmley sits on a busy route, and roofs on the units and extensions beside it are not all pitched.

Not every roof in Warmley has a slope. Rear extensions, porches, garages and small commercial buildings often sit under a flat or shallow roof, and these fail at the edges and the outlets far more often than across the middle. We look first at the upstands, the short upturned edges where a membrane meets a wall, then at the drip edge, where the membrane overhangs into the gutter, and finally at the outlets, which clog with debris.

The covering is the next question. Bitumen felt is the oldest, torch-on felt is its modern equivalent, EPDM is a single rubber sheet, GRP is a fibreglass shell and lead is the traditional choice for detailing. Each has a typical UK range: for example bitumen felt at £70 to £100 per square metre and EPDM at £90 to £130 per square metre (MyBuilder, 2026). Which one is right depends on the shape of the roof and what it joins.

Commercial roofs are priced on survey. A unit beside a main road has the same requirements as a house, plus a few extras: working around opening hours, loading, safe access for staff and deliveries, and a clear plan for water management. We can survey a commercial roof, photograph it and write up its condition so that a landlord or tenant can see what needs doing and in what order. Our flat roofing page covers membranes and edge details, and our commercial roofing page covers the rest.

Building Regulations apply to a flat roof re-cover as they do to any other. A small re-cover often needs no approval, while a larger one brings the Building Regulations in and can mean better insulation. Before work is priced we work out which case yours is.

Felt or single-ply

Choose the covering for the roof's edges and outlets first, since those details decide how long a flat roof lasts.

Map showing the location of Warmley.

Nearby

Roofers near Warmley

Roofing services in Warmley

Local questions

Asked in the village of Champion's brass works

The stack on our Warmley house has cracked pointing and a green stain below it. Is that cement?

Possibly. A hard grey mortar line standing proud of weathered stone or brick is a common sign, and a stain beneath it suggests water is coming through the face of the masonry. We check the flaunching and flashings too, because a leak at one of those can look the same. A repair in lime, with lead put right at the same time, is usually the answer.

Is an outbuilding beside the Warmley House stable block covered by its listing?

It depends on whether the building itself is listed or lies within the curtilage of a listed one. Put the question to South Gloucestershire Council before any work, because an unconsented alteration is an offence. We will draft a note of the covering, the method and the materials, which gives the council a concrete proposal to review.

Our gutters overflow every autumn beside the railway path. What can be done?

Start by clearing the run and checking the falls. If the gutter holds water, the brackets may have slipped or the length may be too long for one outlet. Adding an outlet, replacing sagging sections and fitting a guard where leaf drop is heavy all help, and we explain which suits your roof after looking at it.

Can you work on a unit with a flat roof close to the A420?

Yes. We survey the roof, photograph it and write up its condition, then give a fixed price. Working near a busy road affects the plan more than the roofing: where the scaffold and deliveries go, how pedestrians are protected, and when noisy work is done. We agree those points with whoever manages the building before work begins.

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