If your current roof is leaking in more than one place or simply past its years, you are in the right spot. We are JD Home Improvements, a family run roofing team in Shirehampton, and we install new roofs across Bristol and the towns around it. This page walks you through when a roof is genuinely due for replacement, what a new roof installation involves, how to choose your covering, and what to expect on the day. Honest guidance, with no pressure to spend more than you need.
When does a roof actually need replacing?
Plenty of roofs that look finished have years left with a sensible repair, so a trustworthy roofer will always weigh that up first. A new roof earns its keep when the problems are spread across the whole roof rather than in one spot. Watch for these signs:
- Leaks appearing in several places, not one isolated patch
- Repeat repairs that no longer hold for long
- Tiles or slates cracking or slipping across the slopes
- Granules from concrete tiles collecting in the gutters
- A sagging or uneven roofline
- Daylight through the loft, with damp or rotten timber
- A roof you know to be 50 years or older
If only one area is failing and the rest is sound, we will often recommend roof repairs instead and save you the bigger spend. When the whole roof is tired, replacement is usually the better value over time, and we will show you why.
What a new roof installation involves
A full installation sounds disruptive, so here is exactly how we run one:
- We inspect and advise. We assess the covering and the timbers beneath it, and give you an honest repair-or-replace view.
- We quote in writing. You get a clear, itemised price with no obligation before anything begins.
- We set up safely. Scaffold goes up and your property and planting are protected.
- We strip the old roof. The old covering comes off and the deck is cleared ready for inspection.
- We sort the structure. Battens and any tired or rotten timber are repaired or replaced.
- We lay a breathable underlay. This modern membrane keeps the roof space healthy and catches any stray water.
- We fit your covering. Tiles or slates go on, with ridges, hips, valleys and fresh leadwork around the chimney.
- We add ventilation and insulation. Done to meet current regulations and keep condensation out.
- We finish the roofline if needed. New fascias and gutters tie the whole roof together.
- We check the finished roof and back it with our guarantee. A final inspection and our workmanship warranty, with a 15 year guarantee on the work.
Replacing joists and rafters
Stripping a roof is the one moment you get a clear look at its skeleton. Rafters carry the slopes, with purlins supporting them part way up. On older Bristol homes we often find timbers softened by years of slow leaks or sagging under a heavy covering. Rot and woodworm tend to hide where water has been sitting, around chimneys and valleys.
Where a timber is tired but sound, it can often be strengthened by fixing a new length alongside it, known as sistering. Where it has rotted through, we cut it out and replace it. Swapping slate for heavier concrete tiles can also mean the structure needs strengthening, so we check that before recommending a covering. Structural work like this generally needs Building Regulations approval, which we arrange as part of the job. A sagging roofline or soft, crumbling timber in the loft is worth having looked at, whether or not you are planning a new roof.
Choosing your new roof covering
Your covering shapes how the roof looks and how long it lasts. Most homes fall into two camps.
Pitched tiled and slate roofs
Sloped main roofs are covered in clay or concrete tiles or natural slate. Each has its own character and lifespan, and matching the right one to your home and street matters, especially on period and conservation homes. We go into the materials in detail on our pitched roofing page.
Flat roof areas
Extensions, garages, dormers and porches usually call for a flat system such as EPDM rubber or GRP fibreglass. Modern flat roofing has come a long way and lasts far longer than the felt of old. You can read how we approach it on our flat roofing page.
Here is a quick way to see where each fits:
| Roof type | Where it suits | Typical lifespan |
|---|---|---|
| Pitched, tiled or slate | Main house roofs | 40 to 100 years by material |
| Flat, EPDM / GRP / felt | Extensions, garages, dormers, porches | 20 to 30+ years by system |
New roofs on Bristol homes and extensions
Bristol's housing keeps us busy with every kind of roof. Victorian and Edwardian terraces in Bedminster and Bishopston often want natural slate or clay to stay true to the street, while estates around Bradley Stoke and Yate tend towards concrete tile. Conservation streets in Clifton and Montpelier bring their own matching requirements, which we are used to meeting.
We also install roofs on extensions and new builds, so if you are adding a kitchen-diner or a loft dormer, we can roof it to match the rest of the house rather than leaving an obvious join.
Building Regulations and warranties
Here is a piece of detail many roofers skim over. In England, re-covering more than a quarter of a roof slope can bring the work under Building Regulations, which may mean upgrading insulation or ventilation at the same time. We handle that side for you, so your new roof is compliant as well as watertight.
Ventilation deserves a mention of its own. A warm, poorly vented roof space grows condensation, which rots timber from the inside. Every roof we install is set up to breathe, which is a big part of why a good new roof lasts. Our work is backed by a 15 year guarantee.
What affects the cost of a new roof
We price every roof after seeing it, so treat a figure given without a visit with real caution. The main things that move the cost are:
- Size and shape. Hips, valleys, dormers and multiple slopes add time.
- Your chosen covering. Natural slate and heritage clay sit above standard concrete tile.
- Access and scaffold. Height and tight access both matter.
- What we find underneath. Sound timber keeps costs down; hidden rot adds to the job.
- Roofline and extras. New gutters or rooflights if you include them.
Our quotes are free and carry no obligation. You can request a free quote and we will come and look at a time that suits you.
What to expect while the work is on
Timings depend on the size of the roof and the weather, and we give you a realistic estimate with your quote. You can usually stay in your home throughout. There will be some noise during the day, and scaffold up for the duration, but we keep the site tidy, clear away at the end of each day, and leave things as we found them, minus the old roof.
How to choose a roofer for a new roof
A new roof is only as good as the team laying it, so choose carefully:
- Proper accreditation. We are registered with the Confederation of Roofing Contractors (CORC) and our team holds CSCS cards. Ask to see credentials.
- A real inspection and a written quote. Avoid anyone pricing a new roof from the pavement.
- A meaningful guarantee. Ours is 15 years on the work, and we stand behind it.
- Local and accountable. We are based in Shirehampton, and you only pay once the job is finished to your satisfaction.
- No hard sell. A good roofer is happy for you to take your time over a decision this size.
Should a leak ever turn urgent while you are deciding, we also offer fast call-outs for sudden roof problems.
Areas we cover
We install new roofs across Bristol and the surrounding towns. Post-war homes in Lawrence Weston often have concrete tiles at the end of their life, and the century-old hipped roofs of Sea Mills are reaching the same point. Wherever you live, give us a ring and we will tell you whether we cover your street.
New roof FAQs
How do I know if I need a new roof or just a repair?
If leaks are spreading across the roof and repairs no longer hold, replacement is usually the wiser spend. A single fault on an otherwise sound roof is a repair. We will give you an honest view after a look.
How long does a new roof take to install?
It depends on the size and shape of the roof, along with the weather. We give you a realistic timescale with your quote. You will have a timescale in your quote.
How much does a new roof cost?
It depends on size, shape, covering and what we find underneath, so we never quote blind. We come out to assess it properly, then give you a free itemised price with no obligation.
Do I need Building Regulations approval?
Re-covering more than a quarter of a slope can bring the work under Building Regulations, usually around insulation and ventilation. We take care of that as part of the job.
What covering should I choose?
Clay and slate suit period and conservation homes and last longest, while concrete tile is hard-wearing and friendlier on budget. We will recommend what fits your home and your plans.
Will I have to move out during the work?
Almost never. You can usually carry on living at home while we work, with scaffold up and some daytime noise.
How long will a new roof last?
That depends on the covering and the quality of the work. Slate can last a century, clay 60 to 100 years, concrete 40 to 60, and a good flat roof 20 to 30 years or more. Sound ventilation and workmanship help any roof reach the top of its range.
Do you roof extensions and new builds?
Yes. We roof extensions and loft dormers, and match them to the existing house wherever possible.
Ready to talk it through?
A new roof is a big decision, and the right roofer makes it a smooth one. We will give you an honest assessment and help you choose a covering that suits your home, leaving you with a roof built to last and backed by our guarantee. Have a look at our other roofing services, or get in touch and we will arrange to come and see yours.