
Altitude Roofing South Ltd
Roofing Services in Portsmouth
Roof repairs, emergency call-outs, new roofs, flat roofing and slate work from a qualified, fully insured roofing company based just outside the city in Portchester.
What we do
One roofing company for the whole roof
Whether you need a quick repair before the next storm or a complete new roof, Altitude Roofing South Ltd provides the full range of roofing services for homes and businesses in Portsmouth. Our roofers are trained to NVQ Level 2 in Roof Tiling and Slating, and every job starts with finding the real cause of the problem.
Below you will find each of our core services in detail, including what the work involves and the problems it solves. If you are not sure what your roof needs, that is fine: describe what you have noticed and we will come and take a look.
Cause first
We trace the fault before quoting the fix.
Clear quotes
Free, written and explained.
24/7 emergencies
Call 07525 253333 any time.
Fully insured
Working to CDM 2015.
Portsmouth roofing service
Roof Repairs in Portsmouth
Most roof problems start small. A slipped tile, a cracked ridge or a gap in the mortar lets water in a little at a time, and by the time a stain shows on the ceiling the timber underneath may already be damp. As a roofer in Portsmouth we see the same faults again and again on the city's terraces and semis, and most are straightforward to put right when they are caught early.
We find the actual cause before we fix anything. That means checking the tiles or slates around the problem, the underlay, the battens and any lead work nearby, so the repair lasts rather than moving the leak a metre down the roof.
What this covers
- Slipped, cracked and missing tiles
- Ridge and hip tiles re-bedded or dry-fixed
- Verge and mortar repairs
- Storm and wind damage
- Valley repairs
- Small sections of underlay and battens

Portsmouth roofing service
Emergency Roof Repairs in Portsmouth
Strong winds off the Solent can lift tiles, strip ridge caps and bring down chimney pots with very little warning. When water is coming into your home, the priority is stopping it. Call 07525 253333 and we will get the roof temporarily secured and watertight as quickly as we can.
Once the immediate danger has passed, we inspect the damage properly and quote for a permanent repair. If you are making an insurance claim, we can give you photos and a written description of what we found.
What this covers
- Temporary weatherproofing and making safe
- Lifted or missing tiles and ridges
- Storm-damaged chimneys and flashings
- Leaks coming through ceilings
- Photos and written reports for insurers
- Permanent repair quoted afterwards
While you wait for us
- Move furniture and electrics away from the leak
- Put a bucket under drips and lift carpets or rugs if you can
- If water is near light fittings, turn off that circuit at the consumer unit
- Never go up on the roof yourself, especially in wind or rain
Portsmouth roofing service
Roof Leak Repairs in Portsmouth
Water rarely comes in where the stain appears. It runs along battens and rafters before it drips, so a proper leak repair starts with tracing the water back to where it is getting in. On Portsmouth properties the usual culprits are chimney flashings, valley gutters, abutments against walls, cracked tiles and failed flat roof upstands.
We check each likely entry point, explain what we have found and repair the cause. Where lead flashings have split or worked loose we replace them, and where old cement fillets have cracked away from a wall we can swap them for properly dressed lead.
What this covers
- Chimney flashing and apron leaks
- Valley gutter leaks
- Wall abutments and soakers
- Leaks around roof windows
- Flat roof upstands and outlets
- Damp patches traced to source

Portsmouth roofing service
New Roof Installation in Portsmouth
A new roof is one of the biggest jobs a house will ever need, so it has to be done properly from the timbers up. We install complete pitched roofs in natural slate, clay and concrete tiles for homes, extensions and new builds, working to the manufacturer's fixing guidance for the tile, the pitch and the exposure of the site.
Every new roof goes on over a breathable membrane and new treated battens, with ridges, hips, verges, valleys and lead work finished neatly. We keep the site tidy while we work and leave the property clean when the scaffolding comes down.
What this covers
- Natural slate roofs
- Clay and concrete tile roofs
- Breathable membrane and new battens
- Dry ridge, hip and verge systems
- Lead valleys, flashings and soakers
- Extensions, dormers and new builds

Portsmouth roofing service
Roof Replacement & Re-Roofing in Portsmouth
Many of Portsmouth's terraces and 1930s semis are still on roofs that are decades old. When tiles are failing across the whole roof, the original felt has perished or the battens are rotting, patching it again is money spent on borrowed time. A full re-roof gives the house a new, weathertight covering for decades to come.
We strip the old covering back to the rafters, check and repair any timber that needs it, then fit new membrane, battens and your choice of slate or tile. Where the existing tiles are sound and the look of the house matters, it can also be possible to strip and re-lay the original tiles on new underlay and battens.
What this covers
- Full strip and re-roof
- Timber checks and rafter repairs
- Re-laying original tiles where suitable
- Upgrade to modern breathable underlay
- New ridge, hip and verge finishes
- Scaffolding arranged for you
Roof replacement in your area
Ask about roof replacement & re-roofing
Portsmouth roofing service
Flat Roof Repairs in Portsmouth
Flat roofs over kitchens, garages, bay windows and dormers are everywhere in Portsmouth, and they tend to fail at the edges and joints first. Small splits, lifted seams and cracked upstands let water sit under the covering until the deck starts to rot.
If the covering is sound overall, we repair the failed area and make good the upstands and outlets. If the deck has gone soft or the roof has been patched repeatedly, we will tell you plainly that a new flat roof is the better investment.
What this covers
- Felt roof repairs
- EPDM rubber roof repairs
- GRP fibreglass repairs
- Upstands, trims and outlets
- Ponding and drainage issues
- Deck checks before any repair
Common flat roof problems
- Splits and cracks in the covering
- Blisters and bubbles in felt
- Water ponding after rain
- Failed upstands and flashings
- Soft or spongy decking underfoot
Portsmouth roofing service
Flat Roof Installation in Portsmouth
A well-built flat roof should give you years of trouble-free service. The covering matters, but so does what is underneath it: a solid deck, the right falls so water drains away, and neat detailing at the upstands, drips and outlets.
We install felt, EPDM rubber and GRP fibreglass flat roofs and will talk you through the differences for your building, whether it is a single garage, a rear extension or a commercial roof. Old coverings are stripped, the deck is replaced where needed and the new roof is finished with proper trims and edges.
What this covers
- Felt flat roofs
- EPDM rubber membranes
- GRP fibreglass roofs
- New decking where required
- Falls, trims and drainage
- Garages, extensions, dormers and commercial units

Portsmouth roofing service
Slate Roof Repairs in Portsmouth
Natural slate can last a very long time, but the nails that hold it do not. When nails corrode, slates slip, and one gap soon becomes several. Southsea, Fratton and Old Portsmouth have a great many slate roofs, and keeping them in good order is some of the most satisfying work we do.
We replace slipped and cracked slates to match the existing roof as closely as possible and secure them with the right fixings. Our team is trained to NVQ Level 2 in Roof Tiling and Slating, and where a slate roof is past repair we can re-slate it completely.
What this covers
- Slipped and cracked slates replaced
- Matching reclaimed or new slate
- Nail fatigue and re-fixing
- Slate ridges and hips
- Lead soakers and flashings
- Full re-slating when needed

Portsmouth roofing service
Roof Inspections in Portsmouth
A roof inspection tells you where you stand before small problems become expensive ones. It is worth having one if you are buying a house, after a bad storm, when you notice damp in the loft, or simply if the roof has not been looked at for a few years.
We check the covering, ridges, hips, valleys, chimneys, flashings, gutters, fascias and any flat roofs, and look at the loft side where we can. You get a plain-English explanation of what we found, with photos, so you can see the problem for yourself and decide what to do next.
What this covers
- Tiles, slates and ridges
- Chimneys and lead flashings
- Valleys and abutments
- Loft space, underlay and timbers
- Flat roofs, gutters and fascias
- Photos of anything we find

Portsmouth roofing service
Roof Maintenance in Portsmouth
Regular maintenance is the cheapest way to make a roof last. Blocked gutters overflow into walls, moss holds water against tiles, and a cracked ridge or loose flashing left alone becomes a leak. Coastal weather in Portsmouth makes all of this happen a little faster.
We clear gutters and valleys, replace the odd slipped tile, re-point or re-fix ridges, and repair or replace fascias, soffits and guttering. It is a small job compared with the damage it prevents.
What this covers
- Gutter and valley clearing
- Fascias, soffits and guttering
- Moss removal and roof cleaning
- Ridge and verge re-pointing
- Minor tile and slate repairs
- Chimney and flashing checks

Also available
Other roofing work we carry out
Alongside our core roofing services, we look after the parts of the building that protect the roof and the walls below it.
Fascias, Soffits & Guttering
Supply and installation of fascias, soffits and gutters to protect roof edges and keep rainwater away from walls.
Lead Work & Chimneys
Lead flashings, valleys, soakers and aprons, plus chimney repairs where the stack meets the roof.
Cladding
External cladding for domestic and commercial buildings, fitted to suit the property.
Roof Cleaning
Moss, lichen and algae removed with a method chosen to suit the age and condition of the tiles.
Pricing
What affects the cost of roofing work?
Every roof is different, so we do not publish one-size-fits-all prices. These are the things that shape your quote, which is always free.
Size and shape
Hips, valleys, dormers and chimneys all add detail and time compared with a simple gable roof.
Access and scaffolding
Whether the work can be reached safely from a ladder or needs a full scaffold makes a big difference.
Materials
Natural slate, clay tiles, concrete tiles and different flat roof systems all vary in price.
Condition underneath
Rotten battens, perished underlay or soft decking only show once the covering comes off.
Lead work and chimneys
New flashings, valleys and chimney repairs are specialist work that adds to the job.
Waste and disposal
Stripping an old roof creates a lot of material that has to be removed responsibly.
Service FAQs
Questions about our roofing services
What are the signs my roof needs repairing?
Look for slipped, cracked or missing tiles or slates, damp patches on ceilings or in the loft, daylight showing through the roof boards, loose ridge tiles, moss building up, and gutters that overflow. If you spot any of these, it is worth getting the roof looked at before the problem spreads.
Can you match my existing tiles or slates?
In most cases, yes. We match the size, colour and profile as closely as possible using new or reclaimed materials. On older roofs an exact match is not always available, and we will tell you before starting if that is the case.
What flat roof systems do you install?
We install felt, EPDM rubber and GRP fibreglass flat roofs. Each suits different buildings and budgets, and we will explain the options for your roof when we quote.
How often should a roof be inspected?
It is sensible to have a roof checked every few years, after severe storms, before buying a property, and whenever you notice signs of damp. Older roofs and properties close to the coast benefit from being checked more often.
Do you replace fascias, soffits and guttering?
Yes. We repair and replace fascias, soffits and guttering, either on their own or as part of a re-roof when the scaffolding is already up.
Free, no-obligation quotes
Get a free roofing quote in Portsmouth
Request a callback and we will arrange a time to inspect your roof and explain your options.
