Flat Roofing in Portsmouth
Portsmouth’s mix of terraced housing, flats above shops and rear extensions means flat roofs take a real battering from coastal weather — ponding water, cracked felt and soft, spongy patches are among the most common problems we’re called out for. All Round Roofing has repaired and replaced flat roofs across Hampshire and West Sussex since 1976, working across EPDM, felt, liquid rubber and GRP systems.
We’re a family-run business, and that means giving you a straight answer rather than a sales pitch. If a repair is genuinely enough to fix the problem, that’s what we’ll tell you — we only recommend a full re-cover when it’s actually needed.
You don’t need to work out what’s wrong before ringing us. Water that won’t drain away, a spongy patch, or a leak showing up inside the house is reason enough to call — we’ll assess it properly from there.
Flat Roofing Services We Provide in Portsmouth
EPDM Rubber Roofing
EPDM rubber is our go-to system for most flat roofs in Portsmouth — a single membrane with no seams to let go, able to withstand standing water and coastal weather without the cracking or blistering that felt roofs can develop over time. We fit and repair EPDM on extensions, garages, sheds and outbuildings across the city.
Torch-On Felt Roofing
Torch-on felt is a proven three-layer build-up — underlay, mineral cap sheet and bitumen — bonded to the deck with a blowtorch. It’s a cost-effective, reliable option where a full EPDM upgrade isn’t required.
Liquid Rubber Roofing
Liquid rubber cures into a single, fully bonded waterproof membrane once applied, which makes it well suited to roofs with tricky detailing, upstands or awkward shapes that would be difficult to cover neatly with a sheet material.
GRP Roofing (Fibreglass)
GRP (fibreglass) roofing creates a rigid, glass-reinforced surface valued for its strength and lifespan — a sensible option for larger flat roofs and balconies where extra toughness is worth having.
Flat Roof Repairs AND Maintenance
A full re-cover isn’t always necessary. We repair splits, blisters, perished flashing and other localised damage where a repair is genuinely the right call, and only step up to replacement when a repair won’t hold.
If you can’t tell whether your flat roof needs a repair or a full re-cover, you’re not alone — most people can’t judge it from ground level. Get in touch and we’ll take a proper look before suggesting anything.
Signs Your Flat Roof Needs Attention
Most flat roof problems give some warning before they become serious. Keep an eye out for:
- Water pooling on the roof for more than 48 hours after rain.
- Cracks, blisters or splits in the roofing membrane.
- A soft or spongy patch when walked on.
- Water stains or damp patches on ceilings below.
- Moss, debris or standing leaves building up on the surface.
- Flashing or edge trims lifting or coming away.
None of these problems automatically point to a full re-cover — many are simple to fix if they’re caught in time, which is why it’s worth having them looked at rather than hoping they sort themselves out.
Why Homeowners in Portsmouth Choose All Round Roofing for Flat Roofing
Your flat roof is harder to check yourself than a pitched roof, and it’s easy for small problems to go unnoticed until they’ve grown. Here’s what working with All Round Roofing in Portsmouth looks like:
- Family-run since 1976, with more than 7,000 completed roofing projects.
- TrustATrader vetted and approved (membership T120964), with strong independently published customer ratings.
- Fully insured, with roofers who receive in-house training.
- Workmanship guarantees — 10 years on workmanship, 20 years on flat roofing, and 10 years on fascias and soffits.
- Domestic and commercial experience, across pitched and flat roofing.
- We work with established brands including Marley, Redland and Eurocell.
We aim to keep disruption to a minimum — working tidily, keeping you in the loop as the job progresses, and speaking to neighbours directly where a project is likely to affect them.
What Happens When You Get in Touch
- Tell us what’s going on. Call, use the website form, or our 24hr support chat — whichever’s easiest. Describe what you’ve noticed and where you’re based.
- We talk it through. For many jobs we can offer a same-day quotation; for others, we’ll arrange a time to take a proper look.
- We explain what we’ve found. In plain language, with your options set out clearly — no pressure, no jargon.
- You decide how to proceed. If you’d like to go ahead, we’ll agree a timescale and get started.
- We get the job done properly — and the relevant guarantee applies once it’s finished.
We also provide a 24-hour emergency roofing service, and existing customers are given priority for emergency callouts.
Frequently Asked Questions
Do you cover all of Portsmouth for flat roofing?
Yes. We provide flat roofing across Portsmouth and the surrounding area, alongside Chichester, Portsmouth, Worthing and the wider Hampshire and West Sussex area.
My flat roof has water sitting on it — is that a big problem?
Not always a concern — a small amount of standing water after rain is normal on most flat roofs. But if it’s still there a few dry days later, it can be a sign of a drainage or membrane fault, and leaving it can wear the roof down faster.
How do I know if I need a flat roof repair or a full re-cover?
It depends on the age and condition of the roof and how far the damage has spread, which is why we always inspect before recommending a repair or a re-cover. A lot of roofs that look in poor shape from below just need a straightforward repair — we’ll always be upfront about the options rather than push for a bigger job than you need.
Are you insured?
Yes, All Round Roofing is a fully insured company.
Do you offer a guarantee on flat roofing work?
Yes — flat roofing work is covered by our 20-year flat roofing guarantee. We’ll confirm exactly what applies when we quote for your job.
Is the quote free?
Yes, quotations are free with no obligation to proceed.
Flat Roofing Services Across Portsmouth and Nearby Areas
Flat roofing is one of the services we provide as part of our full roofing offer in Portsmouth — see our Trusted Roofers in Portsmouth page for the complete picture, or visit our main Flat Roofing service page. We also work across Chichester, Crawley, Worthing and Littlehampton.
Get Your Free Flat Roofing Quote in Portsmouth
If your flat roof in Portsmouth needs a repair, a re-cover, or just an honest look, we’re here to help — whether that’s a same-day quote, some honest advice, or a professional assessment of a problem you’ve spotted.
ALL ROUND ROOFING: IF YOU CAN’T REACH, WHY RISK IT?
For roof repairs across Hampshire and Sussex, call 07863 768956.