Hampshire · England
Sandy Balls External Mastic
Sealing brickwork movement joints, render, cladding and façade joints in Sandy Balls, with a one-year guarantee on every job. Ask us for a quote.
- Movement joints filled with mortar instead of sealant
- Sealant that has lost its bond to the brick or render
- Old sealant gone brittle and cracked
Common questions in Sandy Balls
Do you cover Sandy Balls for external mastic?
Yes. We work across London and the South East, and Sandy Balls is part of that. You can ring 0345 464 0079 or send us an email and let us know what needs doing, and we’ll give you a clear quote.
What guarantee comes with external mastic in Sandy Balls?
All our work, in Sandy Balls and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
What is a movement joint?
A vertical gap in a long brick wall is generally a movement joint. It gives the wall room to move.
Is it OK to seal over old sealant?
No, because it fails. We remove every bit of old sealant first, so the new sealant bonds properly.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before resealing.
Is there any odour?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
Where are you based?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
How long does the job take?
That depends on the amount of work, but most jobs take anything from a few hours to several days, depending on the building. We will tell you when we quote.
External mastic in Sandy Balls, done properly
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall so the joint does not stand out. We work on render & cladding joints, concrete & block and joints between brick and frames, and the jobs we see most are joints where the bead has come unstuck and failed sealant between panels on a façade.
Outside joints can only be sealed when they’re dry, so work in Sandy Balls is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
Each job carries a 12-month guarantee, large or small.
- Where
- Sandy Balls (SP6)
- Region
- Hampshire
- Cover
- One year on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What happens if it’s left?
Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. The movement then cracks the brickwork or render nearby. The correct repair is a flexible sealant with the right backing. Older cottages and farmhouses around Sandy Balls can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.
Why us?
- A sealant colour to suit the surroundings
- 4.9 on Google from 180+ five-star reviews
- A choice of colours where the product allows
- One-year guarantee on every job
Take a look at how sealant jobs are priced and customer reviews.
Should I try it myself first?
If you’re 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 does not work out, we can still put it right.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
What affects the quote in Sandy Balls
We do not publish a price list. The quote depends on:
- The size of the job
- The old material and how stubborn it is
- How easy the joints are to reach
- Which sealant suits the joint
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we’ll explain what it covers.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- Photos by email, if that’s easy
- The address or postcode of the job
- The problem you’ve noticed
- Any access issues, like height or stairs
For a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Outside joints around Sandy Balls
With historic houses such as Breamore House (about 2.9 miles north) nearby, there’s older building stock in the area around Sandy Balls as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For site and facilities teams at buildings such as The Burgate School and Sixth Form, larger buildings have long runs of movement joint that eventually need resealing. For an older house near a landmark such as St Giles, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Sandy Balls is in Hampshire. Anywhere in SP6, we cover external mastic for homes and businesses. Sandy Balls is one of 683 towns and villages in Hampshire we cover for external mastic. You can also see our page for Southampton, roughly 16 miles from Sandy Balls.
Our applicators cover all of SP6 for external mastic. External mastic is available to properties on The Pines, River Road and Larch Row and the roads around them. Neighbouring places we cover for external mastic include Godshill (1 mile north-east), Criddlestyle (1 mile south-west), Blissford (1 mile south), Stuckton (1 mile south-west) and Frogham (1 mile south). We also work in nearby towns such as Totton (11 miles east), Lymington (15 miles south-east), Romsey (13 miles east), New Milton (13 miles south), Ringwood (6 miles south) and Barton on Sea (14 miles south).
What’s near Sandy Balls
Locally, jobs take us to homes and businesses close to The Fighting Cocks pub. A little further out are Fordingbridge Doll Museum (1.3 miles west) and Godshill Castle Hill (0.9 miles north). Green spaces nearby include Linbrook Lake and Blashford Lakes.
How it works
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes a few hours to a few days, depending on the length of joint and the access. Somewhere as small as Sandy Balls, access is often the only tricky part. 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.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Let us know about stairs, lifts or work at height
- Tell us if parking is tricky
- Mention any sign-in or site rules at work premises
Ask for a quote
We do not publish a price list. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or email us.
Read more
Other services in Sandy Balls
When something else is needed
We’ll always be straight with you, so here’s what sealant can’t fix:
- Damp that isn’t coming from the joint
- Subsidence or other structural problems
- Cutting new joints into brickwork, which is building work rather than sealant work
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly before booking.
Surfaces we seal
- Copings & trims
- Concrete & block
- Brickwork movement joints
- Façade panels
- Joints between brick and frames
- Render & cladding joints
Looking after it afterwards
Good habits help new joints last longer. A few tips:
- Leave the joints unpainted unless we’ve said otherwise
- Don’t let climbing plants root in the sealant
- Walk round the building once a year and look at the joints
- Point out the joints to other trades
Give the sealant the cure time we tell you before anything rubs against it. The surface skins over quickly, but full cure takes longer.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Landlords, agents and businesses in Sandy Balls
If you manage several properties in or around Sandy Balls, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and pictures by email help.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.