A roof only crosses your mind when it starts letting the weather in, and then it is all you can think about. Finding a roofer you can trust with a job you cannot easily check is one of the more nerve-wracking bits of owning a home in Portsmouth, a city of exposed seafront terraces and ageing flat-roofed extensions.
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To take some of the worry out of it, we read through hundreds of reviews and ranked the firms the city rates most. We weighed the quality and reliability of the work, how well each one communicates and stands behind the job, the range of roofing they handle, and whether the price is fair. The field is deep, so this runs to seven.
Reviews counted for the most, because a roof is only as good as the customers who have lived under it. We revisit the list as reputations build and slip.
The seven run from our top pick down, starting with the best.
1. D C Roofing and Sons Ltd
Top of the list by some distance, this family firm holds a perfect 5.0 from more than a hundred and sixty reviews, far and away the biggest flawless record in the city. Customers describe tidy, reliable work across repairs, re-roofs and everything in between, and crews that turn up when they say they will and clear up after themselves.
“Turned up on time, fair price, spotless job,” reads one of many reviews in the same vein. Work is quoted to the job, with a small repair starting from around £150 and a full re-roof running into the thousands, so it pays to get the quote in early.
What stands out
- A perfect 5.0 from 160-plus reviews, the biggest on the list;
- Tidy, reliable work across repairs and re-roofs;
- Crews that turn up and clear up;
- A long, trusted family record.
A couple of caveats
- Deservedly busy, so book well ahead;
- Bigger jobs are quoted after a survey.
The clear first call for any roofing job, large or small.
2. J P Williams Roofing
A 4.9 from more than ninety reviews puts J P Williams firmly among the best, with a reputation built on slate and tile work done to a high finish. Reviewers single out careful workmanship and a straight-talking approach to quotes, the sort of firm that tells you what actually needs doing rather than what would cost the most.
Pricing is by the job and sits in line with the better firms. For a pitched roof in slate or tile, especially on an older property, it is a dependable and honest choice.
Where it shines
- A 4.9 over 90-plus reviews;
- High-quality slate and tile work;
- Straight, honest quotes;
- A careful, tidy finish.
Where it dips
- More pitched-roof than flat-roof focused;
- Busy, so expect a wait in peak season.
A strong, honest pick for a pitched slate or tile roof.
3. John R Murch Roofing and Building
Part roofer, part builder, John R Murch carries a 4.9 across more than ninety reviews and is the one to call when a roof job shades into wider building work. Customers praise a professional set-up, proper scaffolding and clear project management, which counts for a lot once a job gets bigger than a few tiles.
Prices are quoted per project and reflect the broader remit. For a re-roof tied in with other works, or anything needing serious access, the combined trade is a real advantage.
The strong points
- Roofing and building under one firm;
- Professional, well-managed jobs;
- Proper scaffolding and access;
- A 4.9 from 90-plus reviews.
The weak points
- Likely over-specified for a small repair;
- Bigger projects need planning time.
The pick when roofing meets a larger building job.
4. J and A Roofing Specialists
A spotless 5.0 from more than eighty reviews makes J and A one of the most consistent names here. The feedback leans on reliability and a job finished properly, whether that is a pitched roof or a felted flat one, with no drama along the way. It is the kind of steady, no-nonsense firm that quietly keeps its customers.
Work is priced to the job, competitively for the quality. For a straightforward re-roof or a flat-roof replacement done without fuss, it is a safe bet.
What we liked
- A flawless 5.0 over 80-plus reviews;
- Reliable on both pitched and flat roofs;
- A proper, no-drama finish;
- Competitive pricing.
What we didn’t
- Less visible for big building work;
- In demand, so lead times apply.
A steady, reliable choice for a fuss-free roof.
5. Above and Beyond Roofing Solutions Ltd
With a perfect 5.0 across more than sixty reviews, Above and Beyond lives up to the name on service. Customers highlight helpful communication and a willingness to explain the options, which takes some of the mystery out of a trade most of us never watch at work. Tile, slate and repairs all feature in the praise.
Pricing is by quote and fair for the standard. For owners who want to understand what they are paying for, the clear, patient approach is a real draw.
Reasons to go
- A perfect 5.0 from 60-plus reviews;
- Helpful, patient communication;
- Strong across tile, slate and repairs;
- Clear explanations of the work.
Reasons to pause
- A smaller review base than the top names;
- Everything priced after a look.
The pick for clear advice and a well-explained job.
6. Impervious Roofing and Building
A 5.0 from more than forty reviews makes Impervious a dependable mid-field choice, with a name that sums up the job. Customers mention neat repairs, good leadwork around chimneys and valleys, and a tidy approach to the fiddly detailing where most leaks actually start. It is the sort of firm that fixes the cause, not just the symptom.
Prices come by quote and sit fairly for the work. For a stubborn leak or detailing that needs a careful eye, it is well worth a call.
The appeal
- A 5.0 from 40-plus reviews;
- Neat repairs and leadwork;
- Good on the detailing that stops leaks;
- A tidy, careful approach.
The caveats
- A smaller firm with a shorter record;
- Best for repairs over full re-roofs.
The pick for tricky leaks and careful leadwork.
7. G and T Roofing and Building Specialist Ltd
Rounding off the seven, G and T holds a 5.0 across more than thirty reviews for solid roofing and building work, flat roofs included. The reviews describe fair dealing and a clean finish, the marks of a dependable local firm still building its name. On the evidence so far, the standard is there.
Work is quoted to the job. For a flat-roof replacement or a general roofing fix at a fair price, it earns its place on the shortlist.
Good to know
- A 5.0 from 30-plus reviews;
- Solid roofing and flat-roof work;
- Fair, straightforward dealing;
- A clean finish.
Bear in mind
- A newer name with fewer reviews;
- No published prices, so ask early.
A dependable, fair-priced option for the shortlist.
The seven firms at a glance
| # | Firm | Price | Score (out of 10) | % (out of 100) |
|---|---|---|---|---|
| 1 | D C Roofing and Sons | Repairs from ~£150 | 9.3 | 93% |
| 2 | J P Williams Roofing | By quote | 9.1 | 91% |
| 3 | John R Murch Roofing | By quote | 9.0 | 90% |
| 4 | J and A Roofing Specialists | By quote | 8.9 | 89% |
| 5 | Above and Beyond Roofing | By quote | 8.7 | 87% |
| 6 | Impervious Roofing | By quote | 8.5 | 85% |
| 7 | G and T Roofing | By quote | 8.3 | 83% |
Each roofer’s mark (out of 10)
What the ranking tells us
Portsmouth is unusually well served for roofers, and the scores show it. Almost every firm here holds a near-perfect rating, so what separates them is the weight of evidence behind it rather than the star count alone.
That is why review volume did the heavy lifting. D C Roofing’s lead comes from a hundred and sixty happy customers, not a fractionally higher average. Family firms dominate, and most price by quote, so the sensible move is to get two or three in to look before you commit.
Planning wider work on the house? Our ratings of the best painters and decorators and gardeners and landscapers cover the rest.
How we scored
Five measures shaped each mark. Reviews and reputation counted for about 35 per cent, the quality and reliability of the work for 25 per cent, value and price for 15 per cent, the range of roofing handled for 15 per cent, and communication and guarantees for the last 10 per cent.
The ratings come from public Google reviews, read in late 2026. On price, small repairs tend to start around £150, a flat roof replacement runs roughly £1,500 to £3,000, and a full re-roof from about £5,000, so we judged value against those bands. This is an editorial snapshot, not an official ranking, and the order shifts as reviews build. Always get written quotes and check insurance and guarantees before work starts.
