Southampton · England
External & façade joints in Chilworth, Southampton
Sealing brickwork movement joints, render, cladding and façade joints in Chilworth, with a 12-month guarantee on every job. Ask us for a quote.
- Weathered mastic that no longer stretches
- Sealant pulling away from one side of the joint
- Rain getting behind render or cladding at a joint
For landlords and businesses
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can be quoted together.
How we handle external mastic in Chilworth
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Some surfaces need a primer before sealing, and we don’t skip that step. We work on brickwork movement joints, copings & trims and joints between brick and frames, and common reasons people get in touch are leaking joints around cladding and façade panels and cracked joints where brick meets render or frames.
Somewhere as small as Chilworth, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
All our work is covered by our one-year guarantee, wherever you are in Southampton.
- Place
- Chilworth (SO16)
- Region
- Southampton
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Leave it or put it right?
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. Around Chilworth, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
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 choose Mr Mastic in Chilworth
- A choice of colours where the product allows
- Sealant colour chosen to suit
- 12-month guarantee on every job
- An ARBOMaster approved applicator
Take a look at our cost guide and our reviews.
Chilworth buildings and the weather
With historic houses such as South Stoneham House (about 2 miles south-east) nearby, there’s older building stock in the area around Chilworth as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. 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.
If you live in an older home near Church of St Denys, older walls, gutters and the joints where extensions meet them need a flexible sealant. Letting a property close to Swaythling station? Then split movement joints are easy to miss on a rental until damp shows inside.
Chilworth is about 2 miles south-west of Chandler's Ford, in Southampton. We provide external mastic to homes and businesses in Chilworth. Chilworth is one of 40 places in Southampton we cover.
Work in SO16 is quoted and booked the same way as anywhere else. Whether your property is on Heatherlands Road, Roman Road and Pinelands Road or anywhere close by, we can help. We also cover Chilworth Old Village (1 mile north-west), Bassett (1 mile south), Lordswood (1 mile south-west), Highfield (2 miles south) and North Baddesley (2 miles north-west). Larger places within reach include Southampton (3 miles south), Shirley (3 miles south), Regents Park (3 miles south-west), Townhill Park (3 miles south-east), Midanbury (3 miles south-east) and Thornhill (4 miles south-east).
Local landmarks in Chilworth
Locally, jobs take us to homes and businesses close to Saint George Catholic Voluntary Aided College Southampton and Lakeside Country Park and the streets around them. The closest station to Chilworth is Swaythling station, about 1.9 miles south-east of the centre. A little further out are Eastleigh Museum (2.5 miles east) and Marlands Shopping Centre (3.6 miles south). The countryside around Chilworth includes Flexford Nature Reserve.
Can I do it myself?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Nearby places to Chilworth
Also in Chilworth
What affects the quote in Chilworth
For a quick quote, just ask. The main things that affect it are:
- Any working-time requirements on site
- The number and length of the joints
- Which sealant suits the joint
- Whether there’s mould to deal with
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before we start, so you know where you stand.
What we need to know
You don’t need to know the technical terms. It helps if you can tell us:
- Access, such as stairs, a lift or height
- If it’s domestic, commercial or a hotel
- The address or postcode of the job
- Roughly how big the job is
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you are ready, ring 0345 464 0079 or send us an email.
What we do, step by step
Once we’re on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours to a few days, depending on the length of joint and the access. In a small place like Chilworth, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked and the colour of the new sealant agreed.
- 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.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- On commercial sites, let us know about site rules
- Mention any leaks or damp you’ve noticed
- Let us know about earlier repairs to the joints
Ask for a quote
We don’t publish a price list, because every job is different. Instead, we send you a clear quote for your job. To get started, phone 0345 464 0079 or drop us an email.
Advice
Chilworth questions
Do you cover Chilworth for external mastic?
Yes. Our work covers London and the South East, and Chilworth is part of that. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear quote.
Do you work for landlords with property near Swaythling station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear quote.
Can you seal over the old sealant?
No. The old sealant always comes out first, so the new sealant bonds properly.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
How long before the joint can be used?
Many sealants skin over quickly but take longer to cure fully. We will tell you how long to leave the joint.
Do I need to be at home?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Can you seal joints between render and window frames?
Yes. Where different materials meet is one of the most common joints we seal. The sealant is chosen to bond to both sides, primed where needed.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Keeping the joints in good condition
So the new joints stay in good condition:
- Keep high-pressure jets off the joints
- Walk round the building once a year and look at the joints
- Make sure movement joints aren’t pointed over
- Tell anyone working on the walls about the movement joints
Follow the cure time we give you before the joint is knocked or disturbed. The surface skins over quickly, but full cure takes longer.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established.
Common problems we fix in Chilworth
If plants are growing out of a joint, the sealant has normally failed or was never there. Roots and dirt hold water against the wall and make things worse.
If you can see any of these, it’s time to have the joints looked at:
- Sealant pulling away from one side of the joint
- Moss and dirt in joints with no sealant left
- Joints with sealant missing in places
- Leaking joints around cladding and façade panels
Schools such as Cantell School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
What to look for in a quote
- How the joint is cleaned and prepared
- The length of the guarantee
- Whether they’re fully insured
- How the colour is chosen