Hampshire · England
Vernham Dean External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Vernham Dean. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Moss and dirt in joints with no sealant left
- Leaking joints around cladding and façade panels
- Joints pointed up with cement by mistake
Why act early in Vernham Dean
Resealing a run of joints in one go is normally better than patching one at a time. Joints of the same age tend to fail together and it means sorting access once. In a small place like Vernham Dean, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What you get with us
- Any old sealant cut out fully, not covered over
- Trusted Arbo and Everbuild sealants
- One-year guarantee on every job
- More than 20 years in sealant work
Take a look at what affects the cost and what customers say.
About our external mastic in Vernham Dean
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Porous or awkward surfaces are primed where the sealant needs it, and we don’t skip that step. We work on copings & trims, concrete & block and brickwork movement joints, and the jobs we see most are failed sealant between panels on a façade and rain getting behind render or cladding at a joint.
Around Vernham Dean, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
Whatever the size of the job, you get the same 12-month guarantee.
- Location
- Vernham Dean (SP11)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Letting agents and landlords in Vernham Dean can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for.
Looking after it afterwards
Simple care keeps the joints in good condition. We recommend:
- Act on the first splits you see
- Point out the joints to other trades
- Leave the joints unpainted unless we’ve said otherwise
- Wash walls gently around the sealant
Only paint over the joint if we’ve confirmed the sealant can take paint. Many exterior sealants aren’t designed to be painted and spoil the finish.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established so early resealing is worth it.
How it works
There’s no need to move everything out, just the space around the work. We protect the rest, and the work takes a few hours to a few days, depending on the length of joint and the access for a typical job. In a small place like Vernham Dean, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Tell us if parking is tricky
- On commercial sites, let us know about site rules
- Try not to wet indoor joints just before the visit
Ask for a quote
Getting a quote is simple: tell us what needs doing and where, and roughly how big it is. Photos by email help us understand the job.
Related advice
Also in Vernham Dean
What we can’t put right
In fairness, there are a few things sealant will not fix:
- Structural movement, which needs a surveyor or engineer
- Walls that need new movement joints cut into them
- Cracked brickwork or render that needs a builder or plasterer
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before you book.
Surfaces we seal
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Façade panels
- Concrete & block
- Brickwork movement joints
Surface by surface
Joints between dissimilar materials
Each side of the joint may need its own preparation. We prepare both faces so the sealant bonds properly.
Cladding and façade panels
Cladding and façade panels are generally separated by sealed joints. Each joint gets a sealant that suits the panel and its movement.
Questions from Vernham Dean
What guarantee comes with external mastic in Vernham Dean?
All our work, in Vernham Dean and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Is Vernham Dean within the area you cover?
Yes. Vernham Dean is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used.
What information do you need?
A short description and the location. If we need more, we’ll ask.
Are you insured?
Yes. Mr Mastic is fully insured.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme.
Should I point up the gap in my brickwork?
No. Cement or mortar can’t stretch. Where a joint has been mortared, it can often be raked out and sealed properly.
Quotes for external mastic in Vernham Dean
There’s no set price list, because no two jobs are the same. What we look at:
- Any mould that needs treating
- Working hours on commercial sites
- How many areas need sealing
- The product the joint needs
What it costs depends on the amount of work, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts.
What we need to know
When you call or email, it’s useful to know:
- The type of property
- Photos by email, if that is easy
- If someone has resealed it before
- What the problem is, such as mould, gaps, leaks or cracking
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you are ready, ring 0345 464 0079 or email us.
What external mastic looks like in Vernham Dean
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Schools such as Vernham Dean Gillum's Church of England Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing. Homes close to Church of St Mary include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Vernham Dean is about 7 miles north of Andover, in Hampshire. Homes, rented property, offices and hotels in Vernham Dean can book us for external mastic. Every job comes with our 12-month guarantee. Vernham Dean is one of 683 places in Hampshire where we work. Our Reading page covers work nearby, about 25 miles away.
Postcode districts we cover here for external mastic: SP11. That includes homes and businesses on Bulpits Hill and Back Lane. If you are just outside Vernham Dean, we cover Woodside (1 mile west) and Bagshot (6 miles north). We also work in nearby towns such as Andover (7 miles south), Tidworth (8 miles south-west), Ludgershall (6 miles south-west), Whitchurch (9 miles south-east), East Anton (6 miles south) and Oakley (15 miles east).
What’s near Vernham Dean
Typical jobs here are in homes near The George Inn, among other places. For a walk, there’s Inkpen Hill.