Isle of Wight · England
External Mastic in Southford
External mastic for Southford, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Movement joints with cracked, split or missing sealant
- Water getting into walls through failed joints
- Hard, crazed mastic that has stopped moving
When something else is needed
A few problems are outside what sealant work can do:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracks in the bricks or render themselves, away from the joints
- Failed render or damaged cladding panels
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly.
Surfaces we seal
- Brickwork movement joints
- Façade panels
- Render & cladding joints
- Concrete & block
- Joints between brick and frames
- Copings & trims
External mastic for homes and businesses in Southford
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant. If you are dealing with water getting into walls through failed joints and movement joints filled with mortar instead of sealant, we can put it right, on render & cladding joints, joints between brick and frames and brickwork movement joints alike.
In a village or hamlet like Southford, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
All our work comes with our 12-month guarantee.
- Where
- Southford (PO38)
- Region
- Isle of Wight
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Nearby places to Southford
What else we do in Southford
How to look after the new joints
Aftercare is simple, and it makes a real difference:
- Have failed joints looked at early
- Tell anyone working on the walls about the movement joints
- Look over the joints every year, ideally after winter
- Avoid pressure-washing directly into sealant joints
Only paint over the joint if we have confirmed the sealant can take paint. Paint can crack on a flexible joint.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Why act early in Southford
Water gets in through a failed movement joint. Dealing with it early keeps the repair to the joint, instead of the wall and finishes around it. Where a wall is exposed, as many are in small places like Southford, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or send us an email.
Why Southford clients choose us
- Experience in homes, commercial sites and hotels
- Anti-fungal sanitary silicone in wet areas
- 180+ five-star Google reviews
- Colour agreed with you before any work starts
Take a look at what affects the cost or our reviews.
What happens on the day
Before we leave, we go over the finished joints with you and tell you how long to leave it. The visit itself normally takes anything from a few hours to several days, depending on the building, depending on the size of the job. For a village or hamlet like Southford, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- 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.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any previous sealing or DIY attempts
Getting a quote
There’s no standard price list. Instead, we give you a clear quote for your job. To get started, ring 0345 464 0079 or send us an email.
Read more
What external mastic looks like in Southford
Southford is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Shanklin station? Then split movement joints are easy to miss on a rental until damp shows inside. Homes close to Church of St. Mary and St. Radegund include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Southford is about 6 miles south of Newport, in the Isle of Wight. Across the PO38 area, we cover external mastic for homes and businesses. We cover 125 towns and villages across the Isle of Wight, from the larger towns to small villages. There’s also a page for Portsmouth, roughly 16 miles from Southford.
We work across PO38 for external mastic and the streets around it. Neighbouring places we cover for external mastic include Bierley (1 mile south-west), Nettlecombe (1 mile south-east), Godshill (2 miles north), Wroxall (2 miles east) and Sandford (2 miles north-east). Within a short drive, we also cover Newport (6 miles north), Ryde (9 miles north-east), Cowes (10 miles north), Sandown (6 miles north-east), Shanklin (4 miles east) and Ventnor (3 miles east). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Around Southford
Locally, jobs take us to homes and businesses close to The White Horse Inn and the streets around them. The closest station to Southford is Shanklin station, roughly 4.5 miles north-east. Well-known places in the area include Blackgang Sawmill Museum (2.2 miles south-west) and Arthur Webster Memorial Hospital for Children (4.5 miles north-east). Not far away are Stenbury Down.
Different surfaces, different methods
Copings and trims
Copings expand and contract through the day, so the joints need a sealant that stays flexible year round.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. Where one has been mortared, we cut it out and reseal it with sealant.
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
If you manage several properties in or around Southford, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and photos by email help.
How we quote for external mastic
You’ll get a clear quote before work begins. It’s based on:
- The product the joint needs
- Any mould that needs treating
- Any working-time requirements on site
- Access and height
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Asking for a quote
Photos help, but a description is a good start. Try to tell us:
- Roughly how big the job is
- If it’s domestic, commercial or a hotel
- A few photos by email, if you can
- If someone has resealed it before
If you are in Southford and need external mastic, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before any work starts.
FAQs for Southford
Will you come out to Southford?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Does living near the coast affect external mastic in Southford?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. Walls facing the sea are generally the first to need attention.
Can you work on commercial sites?
Yes. We’ve worked for hotels, offices and other businesses, and we’re fully insured.
What does external mastic cost?
Every job is different, so each one gets its own quote. To get one, call 0345 464 0079 or send us an email and tell us what needs doing and where.
Can you match the colour of my brickwork?
We choose a sealant colour to suit the brick, stone or render. Exterior sealants come in a good range of colours.
Is there any odour?
Some sealants have a smell while they cure, but it fades. Opening a window helps.
Can landlords and businesses book you?
Yes, regularly. We can quote for several properties at once.
Is it OK to seal over old sealant?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.