New Roofs &Re-RoofsBuilt to Last in Barnsley
A complete strip and re-roof from a sole trader with 23 years on the tools, covering Barnsley and the surrounding South Yorkshire towns with a 25-year guarantee.
23 years on the tools · £2m insured · free, no-obligation survey
Re-Roofing Done Properly, From the Timbers Up
My name's Alex Smith and I've been re-roofing houses across Barnsley, Sheffield, Rotherham and Doncaster for 23 years. A full re-roof is the point where every layer of the roof gets looked at properly: the battens, the felt or membrane, the timbers underneath, the flashings around chimneys and valleys, and the covering itself, whether that's slate, concrete tiles or clay tiles. It's a bigger job than a repair, but it's also the point where problems that have been building up for years, sagging ridgelines, rotten sarking boards, cracked mortar bedding, get sorted properly rather than patched over again.
A lot of the housing stock I work on locally has particular quirks. Stone terraces and Victorian and Edwardian slate roofs in Barnsley and Sheffield were often built with timbers that have moved over a century, so a re-roof isn't just a like-for-like swap, it's a chance to correct sagging and bring the structure back level. On the other end, 1930s semis and ex-council estates around Wakefield, Castleford and Doncaster tend to have concrete interlocking tiles that were fitted quickly decades ago with minimal underlay, and re-roofing these properly with a modern breathable membrane makes a real difference to damp and condensation inside the loft.
When I quote for a new roof or re-roof I come out and survey it myself, free of charge and with no obligation. I take photos of the existing roof so you can see exactly what condition it's in and why I'm recommending what I am, whether that's new tanalised battens, lead flashings instead of old mortar fillets, or a dry ridge system instead of a mortar-bedded one. You get a written quote, not a verbal figure that changes later.
Every full re-roof I carry out comes with a 25-year guarantee. That's not a marketing line, it reflects the fact that when you strip a roof back to the timbers and rebuild it with new materials and proper detailing, it should genuinely last that long without call-backs. I'm also fully insured with £2 million public liability cover, which matters when there's scaffolding up and a house open to the weather for a few days.
When you might need this
- Multiple slipped, cracked or missing slates or tiles across large sections of the roof rather than isolated spots
- Sagging roofline visible from the street, often a sign of timber failure rather than just covering wear
- Persistent damp patches or staining on bedroom ceilings that keep coming back after spot repairs
- A roof covering that's reaching or past the end of its practical life, commonly seen on older Barnsley and Sheffield terraces
- Planning an extension, loft conversion or structural change where the existing roof needs bringing up to standard
Recent new roofs & re-roofs work
What Happens When a Tired Roof Is Left Too Long
A roof rarely fails all at once. It's usually a slow accumulation of small issues, a cracked slate here, a bit of slipped pointing there, that eventually adds up to a roof that's costing more in repeated repairs than a proper re-roof would. Here's what I commonly find when I'm called out to older roofs across South Yorkshire that have been patched rather than properly addressed.
Timber decay from long-term water ingress
Once water gets past a cracked slate or failed flashing and sits against roofing timbers, rot can spread quietly in the loft for years before it shows as a sag or a soft patch of ceiling. By the time it's visible, the affected rafters or purlins usually need replacing, not just treating.
Failed underlay letting in wind-driven rain
Older roofs, particularly those built before breathable membranes were standard, often only have a thin bituminous felt underneath the tiles or slates. Once that felt perishes and tears, wind-driven rain, especially the kind that comes across the Pennines on the Penistone and Hathersage side, gets pushed straight through gaps in the covering.
Chimney and valley flashing failure
Lead flashing and valley linings take the brunt of water flow off a roof. When old mortar fillets crack or lead lifts and isn't replaced, water tracks down inside the chimney breast or valley timbers rather than off the roof, causing damage well away from the original leak point.
Escalating repair costs on an ageing structure
Patching the same roof repeatedly, a slate here, a ridge tile there, eventually costs more in call-outs and scaffold hire than a single well-planned re-roof, while the underlying timber and membrane problems keep getting worse underneath the patches.
Common mistakes I see
- Re-covering over old, unventilated felt instead of stripping back to check the timbers and fit a breathable membrane
- Reusing old battens that have already taken nail fatigue and moisture damage rather than fitting new tanalised battens
- Ignoring valley and chimney flashings during a re-roof because the main field of tiles looks fine
- Choosing a covering that doesn't suit the property, for example lightweight concrete tiles on a roof structure and local style that calls for slate
How I work
My process, step by step
- 1
Free survey and photo report
I come out to look at the roof myself, checking the covering, flashings, valleys and, where accessible, the timbers in the loft. You get a photo report showing exactly what condition things are in, so you can see for yourself what needs doing and why.
- 2
Written quote with material options
You receive a clear written quote, not a verbal estimate, covering the scope of work and material choices, whether that's natural Welsh or Spanish slate, clay tiles, or concrete interlocking tiles. Need planning permission? I can help with the application if required.
- 3
Scaffold and strip-off
Once scheduled, scaffolding goes up and the existing covering, felt and battens are stripped back to the rafters. This is when hidden timber problems become visible, and I'll flag anything unexpected before proceeding rather than covering it up.
- 4
Re-roofing: membrane, battens, covering, flashings
A breathable membrane goes down first, followed by new tanalised battens set to the correct gauge for the tile or slate being used. The covering goes on with proper detailing at ridges, hips and verges, and lead flashings are dressed in around chimneys and abutments rather than relying on mortar alone.
- 5
Final inspection, clean-up and guarantee
I check the finished roof, clear the site of debris and old materials, and provide a photo report of the completed work. The job comes with a 25-year guarantee on the full re-roof, giving you something concrete to rely on rather than just my word.
What you get
Faster than repeated patch repairs
One properly planned re-roof, scoped and quoted up front, avoids the stop-start disruption of repeated call-outs for individual slipped slates or leaks over several years.
Safer structure for the whole house
Replacing rotten timbers and failed flashings removes the risk of a sagging roof structure worsening, or water damage spreading into loft insulation, electrics and ceilings below.
Genuine long-term lifespan
Stripping back to the timbers and rebuilding with new breathable membrane, tanalised battens and correctly detailed flashings gives a roof covering that should perform for decades, backed by a 25-year guarantee.
Fewer future repair bills
A re-roof addresses the underlying causes of leaks, timber decay, worn underlay, poor flashing, rather than just the symptom, which reduces the likelihood of repeat repair costs down the line.
One point of contact throughout
As the sole trader carrying out the work, I'm the person who surveys the roof, quotes it, does the work and stands behind the guarantee, so you're not passed between different tradesmen or a call centre.
Peace of mind with real cover
Full £2 million public liability insurance and a written 25-year guarantee mean you're not taking a risk on an uninsured or undocumented job when scaffolding goes up on your home.
Materials, Methods and Choosing the Right Roof
A re-roof isn't a single product, it's a set of decisions about materials and detailing that should reflect the age and style of the property, the local weather, and how the roof will be used. Here's how I approach those decisions on the jobs I take on across Barnsley and the surrounding areas.
Choosing a roof covering
Natural slate, Welsh or Spanish, is common on Victorian and Edwardian properties across Barnsley and Sheffield and is often the right choice when matching the character of a stone terrace or period house. Concrete and clay interlocking tiles suit 1930s semis and many ex-council estates around Wakefield, Castleford and Doncaster, offering a lower-cost, durable covering that's readily available in a range of profiles and colours.
The right choice depends on the roof pitch, the structural loading the timbers can take, planning considerations in conservation areas, and simply what looks right on the street. I'll talk through the realistic options during the survey rather than pushing one product, and where the property sits in a conservation area or needs planning permission for a change of covering, I can help with that application.
Membranes, battens and ventilation
Underneath the visible covering, a breathable membrane replaces older bituminous felt and allows moisture vapour from inside the loft to escape while still keeping wind-driven rain out, which matters especially on the exposed Pennine-facing roofs around Penistone and Hathersage. Tanalised battens, pressure-treated against rot, are fixed at the correct gauge for whichever tile or slate is being used, since gauge spacing varies between products and getting it wrong affects both the finish and the weathertightness.
Proper loft ventilation, whether through ridge vents, eaves vents or tile vents, is considered as part of the re-roof rather than as an afterthought, because a well-covered roof with poor ventilation can still suffer condensation problems that damage timbers from the inside.
Flashings and detailing at chimneys, valleys and verges
Lead flashing at chimneys, abutments and valleys is one of the most common failure points on older roofs, particularly where a previous repair relied on a mortar fillet rather than proper lead. During a re-roof I fit new lead flashings dressed correctly into the brickwork, and use lead or GRP valley linings depending on the roof design.
Ridges are typically finished with a dry ridge system rather than traditional mortar bedding, which avoids the recurring problem of ridge mortar cracking and falling away in frost, something that's common on older Barnsley and Sheffield roofs that have had mortar ridges for decades without being replaced.
New roofs on extensions and structural changes
New roof installations, as opposed to re-roofs, typically come up alongside extensions, loft conversions or replacing a structure that's been removed entirely, for example after fire or storm damage. These jobs involve building the roof structure itself as well as the covering, so the timber sizing, pitch and tie-in with the existing roof all need planning properly from the outset.
Where a new roof needs planning permission, whether for a change in roofline, height, or covering material visible from the street, I can help with the application if required.
Residential roofs across different property types
Most of my re-roofing work is on residential properties: stone terraces, semis, detached houses and bungalows across Barnsley, Sheffield, Rotherham, Doncaster and Leeds. Each property type brings different considerations, older stone terraces often have irregular roof timbers that need assessing individually, while more uniform 1930s and post-war housing tends to have more predictable structures.
Whatever the property, the survey and photo report process stays the same: I look at what's actually there before recommending materials, rather than applying a one-size approach to every job.
New Roofs & Re-Roofs: questions answered
How much does a re-roof cost?
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There's no fixed figure I can quote without seeing the roof, since cost depends on the roof size and pitch, the covering chosen (slate, concrete or clay tile), how much of the structural timber needs replacing, and access such as scaffolding requirements. I provide a free, no-obligation survey and a written quote so you know exactly what's included before agreeing to anything.
How long does a full re-roof take?
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This depends on the size and complexity of the roof, but I'll give you a realistic timeframe as part of the written quote once I've surveyed the job, including scaffold time and any planning application if one's needed.
What's involved in the re-roofing process?
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It starts with a free survey and photo report, followed by a written quote covering material options. Once agreed, scaffold goes up, the old covering and felt are stripped back to the timbers, a breathable membrane and new tanalised battens go on, the new covering and flashings are fitted, and I finish with an inspection, site clean-up and a photo report of the completed roof.
Do you offer a guarantee on new roofs?
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Yes, every full re-roof carries a 25-year guarantee. Standalone repairs are guaranteed for 12 months.
How long should a new roof covering last?
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Natural slate can last many decades when fitted correctly with proper flashings and ventilation, while concrete and clay tiles also offer a long service life if the underlying membrane, battens and detailing are done properly. The 25-year guarantee reflects the standard of work I carry out on every re-roof.
Can you deal with an urgent roof problem discovered during a re-roof?
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If unexpected timber decay or damage is found once the roof is stripped back, I'll flag it straight away and explain the options before proceeding, so there are no surprises. I take calls seven days a week between 7:30am and 8pm if something needs discussing urgently.
Do I need planning permission for a re-roof or new roof?
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Most like-for-like re-roofs don't need planning permission, but changes to roofline, height, or covering material, especially in conservation areas, sometimes do. I can help with the planning application if your project requires one.
Do you cover re-roofing outside Barnsley itself?
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Yes, alongside Barnsley I carry out re-roofs and new roofs across Elsecar, Hoyland, Wombwell, Wentworth, Tankersley, Blacker Hill, Harley and West Melton, and further afield including Sheffield and Leeds.
Get a Free Re-Roof Survey and Written Quote
Call or message me to arrange a free, no-obligation survey of your roof, with a photo report and a clear written quote covering materials and timescales.
25-year re-roof guarantee · 12-month repair guarantee · £2m insured