Hampshire · England
Little Somborne External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Little Somborne, backed by a 12-month guarantee. Ask us for a quote.
- Joints pointed up with cement by mistake
- Cracked joints where brick meets render or frames
- Leaking joints around cladding and façade panels
Your questions about external mastic in Little Somborne
Do you cover smaller places like Little Somborne?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is external mastic in Little Somborne guaranteed?
Every job comes with our 12-month guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
How often do external joints need resealing?
There’s no fixed answer: sunny, exposed elevations and busy joints wear faster. Check them each year and reseal when they split or harden. Our work comes with a one-year guarantee.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Do you take out the old sealant first?
Yes, every time. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
What is a movement joint?
Brickwork, render and cladding all move a little, and planned joints take up that movement. It’s closed with backing rod and a flexible sealant.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us.
Are you fully insured?
Yes. Full insurance covers our work.
How we handle external mastic in Little Somborne
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Some surfaces need a primer before sealing. We work on copings & trims, façade panels and brickwork movement joints, and common reasons people get in touch are sealant pulling away from one side of the joint and brick movement joints where the sealant has split.
External sealant needs dry, clean surfaces, so work around Little Somborne is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- Little Somborne (SO20)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
The process
We keep the work tidy and contained to the joints we’re treating. The job normally takes a few hours to a few days, depending on the length of joint and the access. Somewhere like Little Somborne needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- 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 parking restrictions
- Tell us about access, such as stairs, a lift or high-level joints
- Clear items away from the joints we are working on
Ask for a quote
To get a quote, ring 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We will give you a clear price before any work starts.
Related advice
For landlords and businesses
Hotels need rooms back in use, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
We work for landlords and letting agents as well as householders. Sealant work between tenants keeps a property looking cared for.
What affects the cost of external mastic
You’ll get a clear quote before work begins. It takes into account:
- The old material and how stubborn it is
- How many areas need sealing
- Which sealant suits the joint
- Mould in or behind the old joints
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Asking for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- The rough size of the job
- How we’d reach the joints
- A few pictures by email, if you can
- Whether it has been sealed before
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.
Aftercare tips
Aftercare is simple, and it makes a real difference:
- Look over the joints every year, ideally after winter
- Ask before painting over external sealant
- Point out the joints to other trades
- Make sure movement joints aren’t pointed over
Keep pressure washers away from the sealant. High-pressure water can lift the edges.
Once a joint can’t move, the wall finds another way, often as cracks near the joint. Catch it early and you reduce the risk.
Signs you need external mastic in Little Somborne
Buildings move more than people expect. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. The sealant in the movement joints takes that strain.
Keep an eye out for these signs:
- Weathered mastic that no longer stretches
- Damp patches traced to an open external joint
- Cracked joints where brick meets render or frames
- Leaking joints around cladding and façade panels
If you live in an older home near All Saints Church, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Before booking anyone
- What preparation is included
- What the quote includes, VAT included or not
- How long the guarantee is
- What insurance they hold
Different surfaces, different methods
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.
Cladding and façade panels
If the façade has a specified sealant, that is what we use, or one the system allows. Send us any details you have about the façade.
Nearby places to Little Somborne
More services for Little Somborne
Why it’s worth doing now in Little Somborne
Mortar or ordinary filler might look like a quick way to close an open joint, but it stops the joint moving. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. Around Little Somborne, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first and give you a clear price before any work starts.
Why choose Mr Mastic in Little Somborne
- Old sealant always removed completely
- Colour agreed with you before work begins
- 180+ five-star Google reviews
- Anti-fungal silicone where joints get wet
Read our cost guide or our reviews.
Walls and rooflines in Little Somborne
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In and around Little Somborne, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Little Somborne is about 6 miles west of Winchester, in Hampshire. From the centre of Little Somborne to the outskirts, external mastic is available for homes and businesses alike. Our area takes in 683 places across Hampshire, large and small. Our Southampton page covers work nearby (12 miles or so).
All of SO20 is within our area for external mastic. If you need external mastic at a property on Chalk Hill and Somborne Park Road or a nearby road, our applicators can take on the job. Nearby, we also carry out external mastic in Up Somborne (1 mile east), Ashley (1 mile south), King's Somborne (2 miles south-west), Lower Slackstead (5 miles south) and Braishfield (5 miles south). Within a short drive, we also cover Winchester (6 miles east), Eastleigh (10 miles south-east), Andover (8 miles north), Totton (12 miles south), Chandler's Ford (8 miles south) and Hedge End (14 miles south-east).
Around Little Somborne
Nearby you will also find Royal Hampshire County Hospital (5.6 miles east).