Hampshire · England
External Mastic in Hightown
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Hightown. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Joints with sealant missing in places
- Cracked joints where brick meets render or frames
- Water getting into walls through failed joints
External mastic in Hightown, done properly
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. We are often asked to deal with old sealant gone brittle and cracked and weeds or debris growing in open joints, across copings & trims, joints between brick and frames and concrete & block.
Outside joints can only be sealed when they’re dry, so work in Hightown is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
All our work comes with a 12-month guarantee, wherever you are in Hampshire.
- Place
- Hightown (BH24)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Fix overflowing gutters above sealed joints
- Show decorators and builders where the movement joints are
- Get split or bare joints resealed while the damage is small
- Check external joints each spring
Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.
A joint that has stopped moving pushes the movement elsewhere, normally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
What external mastic looks like in Hightown
Historic houses like Avon Tyrrell House (about 3 miles south) are a reminder that the area around Hightown has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around St John the Baptist, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Hightown is in Hampshire. Hightown gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Hightown is one of 683 places in Hampshire we cover for external mastic. Our Southampton page covers work nearby (17 miles or so).
All of BH24 is within our area for external mastic. Whether your property is on Ashley Close, Forestlake Avenue and Holmwood Garth or a nearby road, our applicators can take on the job. Neighbouring places we cover for external mastic include Crow (1 mile south), Poulner (1 mile north), Ringwood (1 mile north-west), Upper Kingston (1 mile south-west) and Forest Corner (1 mile north-east). Within a short drive, we also cover Totton (12 miles north-east), Lymington (11 miles south-east), New Milton (8 miles south-east), Barton on Sea (8 miles south-east), Dibden Purlieu (15 miles east) and Marchwood (14 miles east).
Landmarks near Hightown
In Hightown, that means homes and buildings near Ringwood School Academy and The Elm Tree Inn, among other places. Other landmarks nearby include St Leonard's Hospital (4.3 miles south-west). The countryside around Hightown includes Linbrook Lake and Blashford Lakes.
Also near Hightown
Other services in Hightown
Honest limits
We won’t take on work that won’t last, so here’s what sealant cannot put right:
- Loose or hollow render, which needs re-rendering
- Cracked brickwork or render that needs a builder or plasterer
- Cutting new joints into brickwork, which is building work rather than sealant work
If you are not sure, just call 0345 464 0079 or email us and we will give you a straight answer.
Surfaces we seal
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
- Façade panels
- Concrete & block
- Brickwork movement joints
Signs you need external mastic in Hightown
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant cannot cope with a joint that moves a lot, and it tears off the sides.
If you can see any of these, it’s time to have the joints looked at:
- Moss and dirt in joints with no sealant left
- Old sealant gone brittle and cracked
- Joints with sealant missing in places
- Damp patches traced to an open external joint
Schools such as Ringwood Junior School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
What to look for in a quote
- Whether they seal over old material or remove it
- Who turns up on the day
- The length of the guarantee
- When the joint can take water or movement
Common questions in Hightown
Do you cover smaller places like Hightown?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover Hightown for external mastic?
Yes. We work across London and the South East, and Hightown is part of that. You can ring 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear price.
What do you put in the joint?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
When is the sealant fully cured?
Cure times vary by product. We tell you how long to leave it before we go.
Is the work guaranteed?
Yes, for a year. If anything is not right with the work within the year, let us know and we’ll sort it.
Are you ARBOMaster approved?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
What happens on the day
All our tools and materials come with us in the van. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes anything from a few hours to several days, depending on the building. For a village or hamlet like Hightown, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Where the joints are inside, avoid wetting them before we arrive
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
Want a quote for external mastic? Please phone 0345 464 0079 or email us with a few details. We’ll explain what we’d do and send you a clear quote before any work starts.
Advice
Why act early in Hightown
Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. The wall then cracks somewhere else. The correct repair is a flexible sealant with the right backing. Older cottages and farmhouses around Hightown can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Combining jobs into one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We will send you a clear quote for the lot.
Why Hightown clients choose us
- Experience in homes, commercial sites and hotels
- Quality sealants from Arbo and Everbuild
- Every job guaranteed for a year
- We agree the colour with you first
Take a look at our cost guide or customer reviews.
Landlord and commercial work in Hightown
For anyone letting property in or around Hightown, several properties can be quoted together. Send us the addresses and the work at each.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
How the job changes by surface
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.
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. Their movement joints are sealed over backing rod with a flexible sealant.