Hampshire · England
External & façade joints in Southend, Hampshire
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Southend. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Moss and dirt in joints with no sealant left
- Damp patches traced to an open external joint
- Old sealant gone brittle and cracked
How we handle external mastic in Southend
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We strip the joint back and start again. We’re often asked to deal with joints with sealant missing in places and sealant pulling away from one side of the joint, across brickwork movement joints, render & cladding joints and façade panels.
External sealant needs dry, clean surfaces, so work around Southend is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
Each job carries a 12-month guarantee.
- Location
- Southend (SO32)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
For landlords and businesses
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Housing providers, facilities teams and property managers book us too in Southend and across Hampshire. We can quote a run of properties together.
Towns and villages near Southend
Other services in Southend
How the job changes by surface
Cladding and façade panels
Cladding and façade panels are generally separated by sealed joints. Each joint gets a sealant that suits the panel and its movement.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. We cut out the old sealant and reseal with a product suited to both surfaces.
Common questions in Southend
Do you cover Southend for external mastic?
Yes. We work across London and the South East, and Southend is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will send you a clear quote.
Can you help a landlord with a rental near Portchester station?
Yes. We work for landlords and agents as well as homeowners. You can ring 0345 464 0079 or email us with the details for a clear quote.
Do you guarantee your work?
Yes: twelve months. If there’s a problem with our work in that time, tell us and we will put it right.
How much does external mastic cost in Southend?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote and we will talk you through it.
Can you match the colour of my brickwork?
The aim is a neat, even joint in a colour that suits the wall. Colour is agreed with you before we begin from the range available.
How long before the joint can be used?
That depends on the sealant used, so please follow the time we give you when we finish.
Will it make a mess?
We keep the work tidy. Nearby surfaces are protected, and we clear up when we’re done.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Signs you need external mastic in Southend
If plants are growing out of a joint, the sealant has normally failed or was never there. Dirt and roots then trap moisture in the joint.
It’s worth asking for a quote if you see:
- Weathered mastic that no longer stretches
- Sealant pulling away from one side of the joint
- Joints pointed up with cement by mistake
- Joints with sealant missing in places
For landlords with property near Portchester station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
What to look for in a quote
- How the surfaces are prepared before sealing
- What guarantee comes with the work
- What the quote includes, VAT included or not
- Whether you can choose the colour
What we can’t put right
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Loose or hollow render, which needs re-rendering
- Rising or penetrating damp from elsewhere in the wall
If you’re not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Façade panels
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
- Copings & trims
- Brickwork movement joints
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
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.
What happens on the day
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours to a few days, depending on the length of joint and the access. Somewhere as small as Southend, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- We cut out the failed sealant and rake out any dirt or growth.
- We clean both faces of the joint and prime them where the product calls for it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Clear items away from the joints we are working on
- Try not to wet indoor joints just before the visit
- Mention any tricky access
Get a quote
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we will talk you through the work.
Related advice
Why it’s worth doing now in Southend
Running new sealant over the old bead rarely lasts. The new layer cannot bond properly to old, weathered material, so we always take the old sealant out. Around Southend, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Why Southend clients choose us
- We leave the area clean and tidy
- Full insurance on every job
- 20+ years of sealant experience
- Approved under the ARBOMaster scheme
Read our cost guide or our reviews.
Outside joints around Southend
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to Church of the Holy Trinity include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain. For site and facilities teams at buildings such as Newtown Soberton Infant School, its movement joints, gutters and trims need looking after like any other building’s.
Southend is about 5 miles north-west of Waterlooville, in Hampshire. If you need external mastic in Southend, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We are based in Crawley and cover Hampshire. Our area takes in 683 places across Hampshire, from the larger towns to small villages. For nearby work, see our Portsmouth page, about 8 miles away.
We work across the SO32 postcode area for external mastic and the streets around it. Close by, we work in Newtown (1 mile south-west), Soberton Heath (1 mile west), Hoe Gate (1 mile south-east), Woodend (1 mile west) and Hipley (1 mile south). Within a short drive, we also cover Winchester (13 miles north-west), Gosport (8 miles south), Havant (7 miles south-east), Eastleigh (10 miles west), Fareham (6 miles south-west) and Horndean (5 miles east).
Local landmarks in Southend
We work in homes and buildings around The Bold Forester Public House, among other places. The closest station to Southend is Portchester station, roughly 5 miles south. Well-known places in the area include Knowle Hospital (4.4 miles south-west). For a walk, there’s St Clair's Meadow and Portsdown Hill.