Hampshire · England
Northington External Mastic
Movement joints in Northington need attention? We remove the old material, prepare the joints and seal them properly.
- Joints where the bead has come unstuck
- Movement joints filled with mortar instead of sealant
- Water getting into walls through failed joints
External mastic for homes and businesses in Northington
We are ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Some surfaces need a primer before sealing. We work on render & cladding joints, brickwork movement joints and copings & trims, and common reasons people get in touch are old sealant gone brittle and cracked and water getting into walls through failed joints.
Older homes in small places like Northington may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
There’s a 12-month guarantee on every job, whatever its size.
- Place
- Northington (SO24)
- Region
- Hampshire
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Point out the joints to other trades
- Make sure movement joints are not pointed over
- Ask before painting over external sealant
- Fix overflowing gutters above sealed joints
Follow the cure time we give you before the joint is knocked or disturbed. Most exterior sealants skin fast but take longer to cure right through.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
What affects the quote in Northington
The quote reflects the job in front of us. We look at:
- Whether there’s mould to deal with
- How much old sealant there is and how hard it is to remove
- The size of the job
- Which sealant suits the joint
The cost depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins, so you know where you stand.
What to tell us for a quote
To help us quote quickly, let us know:
- Photos by email, if that is easy
- Roughly how big the job is
- Where the property is
- What the problem is, such as mould, gaps, leaks or cracking
Need a quote? Please ring 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Landlord and commercial work in Northington
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Your questions about external mastic in Northington
Is Northington in your area for external mastic?
Yes, Northington is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear price.
Do you work for landlords with property near Micheldever station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
How do you reach high-level joints?
It depends on the height and the site. Ground-floor joints are simple; for higher ones, send details and we will confirm the access.
When will the joints need doing again?
It varies from wall to wall: sunny, exposed elevations and busy joints wear faster. A yearly look will tell you when they need doing. Every job carries our one-year guarantee.
Will there be a smell?
That depends on the sealant. Some smell for a while, some hardly at all.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is usually more efficient.
Which products do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference.
How do I get a quote for external mastic in Northington?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
What we’re called out for in Northington
If plants are growing out of a joint, the sealant has usually failed or was never there. Roots and dirt hold water against the wall and speed up the damage.
It’s worth asking for a quote if you see:
- Cracked joints where brick meets render or frames
- Leaking joints around cladding and façade panels
- Movement joints with cracked, split or missing sealant
- Rigid filler in a joint that should flex
In the older streets around Church of St John the Evangelist, an extension built onto an older house moves differently, and the joint between them takes the strain.
What to look for in a quote
- Whether the sealant suits the joint
- What the cure time is
- Whether you can choose the colour
- The length of the guarantee
What happens on the day
There’s no need to move everything out, just the space around the work. Everything nearby is protected, and the work takes a few hours to a few days, depending on the length of joint and the access for a typical job. Somewhere as small as Northington, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about parking restrictions
- Tell us about any previous sealing or DIY attempts
How to get a quote
For external mastic in Northington, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
Related advice
Northington buildings and the weather
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Rented homes near Micheldever station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Northington is about 7 miles north-east of Hyde, in Hampshire. For external mastic in and around Northington, it’s easy to get a quote: please call 0345 464 0079 or drop us an email. We’re based in Crawley and cover Hampshire, Northington included. Northington is one of 683 places in Hampshire where we work for external mastic. There’s also a page for Southampton, about 17 miles away.
Every address in SO24 is covered for external mastic, from the main roads to the quietest streets. Other places close to Northington include Totford (1 mile north-east), Brown Candover (1 mile north-east), Old Alresford (2 miles south-east), Bighton (3 miles south-east) and Preston Candover (4 miles north-east). Within a short drive, we also cover Basingstoke (10 miles north), Winchester (8 miles south-west), Eastleigh (13 miles south-west), Andover (14 miles north-west), Chandler's Ford (13 miles south-west) and Alton (9 miles east).
Near you in Northington
We work in homes and buildings around The Woolpack Inn, among other places. Northington’s nearest station is Micheldever station, roughly 4.6 miles north-west. Nearby you will also find Barton Castle (3.2 miles east).
Why act early in Northington
Water gets in through a failed movement joint and can run behind render or cladding. Resealing early keeps the job to the joint itself, rather than the wall around it. In a small place like Northington, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Doing several joints on one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Why us?
- 180+ five-star Google reviews
- A 12-month guarantee on all work
- Domestic, commercial and hotel work
- Colour agreed with you before work begins
Places near Northington
What else we do in Northington
Surface by surface
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind.
Joints between dissimilar materials
Wherever two materials meet, they move differently. We seal the joint with a flexible exterior sealant.