Portsmouth · England
External & façade joints in Fratton, Portsmouth
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Fratton and across Portsmouth. Fully insured, ARBOMaster approved and guaranteed for a year.
- Rain getting behind render or cladding at a joint
- Sealant pulling away from one side of the joint
- Panel joints letting water in
Quotes for external mastic in Fratton
The quote reflects the job in front of us. We take into account:
- Any mould that needs treating
- The type of sealant required
- Access and height
- How much old sealant there is and how hard it is to remove
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
What we need to know
Before you ask for a quote, have a think about:
- What’s wrong with the joints now
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
- The rough size of the job
For external mastic in Fratton, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
External mastic in Fratton, done properly
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two. We’re often asked to deal with rain getting behind render or cladding at a joint and old sealant gone brittle and cracked, across copings & trims, brickwork movement joints and concrete & block.
In and around Fratton, older properties sit alongside newer ones, each with its own outside joints. Older homes need their gutter and trim joints kept tight, newer ones their movement joints.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Fratton (PO1, PO4, PO3)
- Wider area
- Portsmouth
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll quote.
In hotels, rooms out of use cost money, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
Signs you need external mastic in Fratton
Every building moves. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. All of that ends up in the joint sealant.
Most people get in touch after spotting something like this:
- Failed sealant between panels on a façade
- Gaps where render, brick and frames meet
- Joints pointed up with cement by mistake
- Damp patches traced to an open external joint
If you look after a building such as Penhale Infant School & Nursery, its movement joints, gutters and trims need looking after like any other building’s.
What your quote should include
- Are they insured?
- How the surfaces are prepared before sealing
- What happens if the job turns out different
- Who does the work, and how experienced they are
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Why deal with it now?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. In an older home around Fratton, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Why us?
- Anti-fungal sanitary silicone in wet areas
- Homes, businesses and hotels
- ARBOMaster approved applicator
- Old sealant always removed completely
Take a look at our cost guide or what customers say.
How the visit works
There’s no need to move everything out, just the space around the work. We protect the rest, and the job takes a few hours for a handful of joints, longer for a whole elevation for a typical job. A visit to Fratton is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- Keep children and pets away from the work area
- Tell us if parking is tricky
- Tell us about any water getting in
Ask for a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. When it suits you, phone 0345 464 0079 or drop us an email.
Advice
Fratton buildings and the weather
Fratton is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Homes close to St Mary's Church include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move. Letting a property close to Fratton station? Then split movement joints are easy to miss on a rental until damp shows inside.
Fratton is about 1 mile south-east of Portsmouth, in Portsmouth. Jobs in Fratton get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across Portsmouth, we cover 19 places, Fratton among them.
Jobs for external mastic in PO1, PO4 and PO3 is quoted and booked the same way as anywhere else. If you need external mastic at a property on Renny Road, Clive Road and Union Road or anywhere close by, we can help. Being close to the A288, Fratton is easy for our applicators to reach. If you are just outside Fratton, we cover Kingston (1 mile north-east), Portsmouth (1 mile north-west), Landport (1 mile west), Baffins (1 mile north-east) and Copnor (1 mile north-east). Within a short drive, we also cover Wymering (3 miles north), Paulsgrove (3 miles north), Cosham (3 miles north), Drayton (3 miles north) and Farlington (4 miles north-east).
Around Fratton
Typical jobs here are in homes near The Portsmouth Academy, Alexandra Park and St Edmund's Catholic School and the streets around them. There’s a railway station in Fratton itself: Fratton station. Nearby you’ll also find St Mary's Hospital (within half a mile east) and Charles Dickens Birthplace Museum (0.8 miles north-west). The countryside around Fratton includes Milton Locks and Portsdown Hill.
What else we do in Fratton
When something else is needed
In fairness, some problems need a different trade:
- Loose or hollow render, which needs re-rendering
- Cracking across the wall rather than at a joint
- Walls that need new movement joints cut into them
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly.
What we seal
- Joints between brick and frames
- Concrete & block
- Façade panels
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
Common questions in Fratton
Is external mastic in a coastal place like Fratton any different?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Can you help a landlord with a rental near Fratton station?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.
Do the sealants smell?
It depends on the product. Some smell for a while, some hardly at all.
What do you need from me for a quote?
A short description and the location, with photos by email if possible. If we need more, we’ll ask.
How long does the job take?
Most jobs take a few hours to a few days, depending on the length of joint and the access, including preparation and clearing up. We will confirm how long when we quote.
Can new sealant go over the old?
No, it will not last. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and the area is left clean when we finish.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint.