Hampshire · England
External & façade joints in Ashton, Hampshire
External mastic in Ashton from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Weathered mastic that no longer stretches
- Gaps where render, brick and frames meet
- Leaking joints around cladding and façade panels
How the visit works
A visit follows a simple pattern: we look at the joints together, protect the area around them, carry out the job and tidy away. Most jobs take a few hours to a few days, depending on the length of joint and the access. Somewhere like Ashton needs a little journey planning: let us know about lanes, gates and parking. 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.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Let us know about stairs, lifts or work at height
- Tell us about any water getting in
Ask for a quote
Asking for a quote is easy: let us know the job and the location. A few photos by email make the job easier to understand, and we’ll come back to you with a quote.
Read more
External mastic in Ashton, done properly
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two. We work on concrete & block, brickwork movement joints and copings & trims, and common reasons people get in touch are movement joints with cracked, split or missing sealant and leaking joints around cladding and façade panels.
Outside joints can only be sealed when they’re dry, so work in Ashton is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
You are covered for a year from the day we finish. If there’s a problem with it, please ring 0345 464 0079 or email us.
- Place
- Ashton (SO32)
- Region
- Hampshire
- Cover
- A year, on every job
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What external mastic looks like in Ashton
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around Church of St Peter, the joints between older walls, newer extensions and the roofline need a sealant that can move. For landlords with property near Botley station, split movement joints are easy to miss on a rental until damp shows inside.
Ashton is about 5 miles north-east of Hedge End, in Hampshire. Homes, rented property, offices and hotels in Ashton is covered for external mastic, old or new, large or small. Every job comes with our 12-month guarantee. Our Hampshire coverage runs to 683 places, Ashton among them. For nearby work, see our Southampton page, about 8 miles away.
Jobs for external mastic in SO32 works the same way as everywhere else we cover. We also cover Upham (1 mile north-west), Bishop's Waltham (1 mile south), Durley Street (1 mile south-west), Lower Upham (1 mile west) and Wintershill (2 miles west). We also work in nearby towns such as Winchester (8 miles north-west), Gosport (12 miles south), Havant (13 miles south-east), Eastleigh (5 miles west), Fareham (8 miles south) and Horndean (10 miles south-east).
Local landmarks in Ashton
We work in homes and buildings around Swanmore College of Technology. For rail, the closest station is Botley station, roughly 4 miles south-west. Nearby you’ll also find Bishop's Waltham Museum (1.1 miles south) and Moorgreen Hospital (5.3 miles south-west). For a walk, there’s Beacon Hill and Bishops Waltham Branch LNR.
What affects the cost of external mastic
We quote each job individually. This is what makes a difference:
- How much there is to do
- The old material and how stubborn it is
- When we can work, for business premises
- How easy the joints are to reach
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
Helping us quote
You don’t need to know the technical terms. It helps if you can tell us:
- If someone has resealed it before
- Roughly how big the job is
- What’s wrong with the joints now
- Access, such as stairs, a lift or height
Want a quote for external mastic? Please ring 0345 464 0079 or send us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
FAQs for Ashton
Can you help a landlord with a rental near Botley station?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or email us with the details for a clear quote.
Will you come out to Ashton?
Yes. Ashton is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Should I point up the gap in my brickwork?
No. A mortar-filled joint can’t move, so the wall cracks somewhere else instead. It needs a flexible sealant over backing rod.
What’s an expansion joint in brickwork?
Most straight vertical gaps in brickwork are movement joints. It lets the bricks expand without cracking, and it should be sealed with a flexible sealant.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do you work at height?
It depends on the height and the site. Ground-floor joints are simple; for higher ones, send details and we’ll confirm the access.
Is there a guarantee?
Yes. Every job comes with a 12-month guarantee.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
When it is not the sealant
Sealant is not the answer to every problem, and we will tell you before work begins. It will not solve:
- Adding movement joints to masonry that has none
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracked brickwork or render that needs a builder or plasterer
If you are not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Where we work in Ashton
- Copings & trims
- Render & cladding joints
- Façade panels
- Brickwork movement joints
- Joints between brick and frames
- Concrete & block
What the job involves on each surface
Cladding and façade panels
Cladding and façade panels are normally separated by sealed joints. Each joint gets a sealant that suits the panel and its movement.
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. Their movement joints are sealed over backing rod with a flexible sealant.
Other services in Ashton
For landlords and businesses
We also work for property managers and facilities teams. Several sites can go on one quote, and we are fully insured for the work.
For anyone letting property in or around Ashton, several properties can go on one quote. Just tell us the addresses and what each one needs.
Common problems we fix in Ashton
If plants are growing out of a joint, the sealant has generally failed or was never there. Dirt and roots then trap moisture in the joint and make things worse.
Any of these means the joints need attention:
- Plants rooting in failed movement joints
- Sealant pulling away from one side of the joint
- Weathered mastic that no longer stretches
- Movement joints with cracked, split or missing sealant
Schools such as Bishops Waltham Infant School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
What to look for in a quote
- Is VAT in the price?
- How the colour is chosen
- How hidden problems are handled
- How the surfaces are prepared before sealing