Hampshire · England
Upper Clatford External Mastic
External mastic in Upper Clatford from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Weathered mastic that no longer stretches
- Joints where the bead has come unstuck
- Water getting into walls through failed joints
What affects the quote in Upper Clatford
We don’t publish a price list, because jobs vary so much. The quote depends on:
- The amount of work
- The type of sealant required
- Any mould that needs treating
- Whether old sealant or filler has to be cut out
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before work begins.
What we need to know
Before you ask for a quote, have a think about:
- Pictures of the joints, sent by email
- The rough size of the job
- What the problem is, such as mould, gaps, leaks or cracking
- The type of property
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. When it suits you, ring 0345 464 0079 or email us.
External mastic in Upper Clatford
A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. We’re often asked to deal with plants rooting in failed movement joints and sealant that has lost its bond to the brick or render, on façade panels, concrete & block and joints between brick and frames.
Older homes in small places like Upper Clatford may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water usually gets in, and they need the right sealant at the right depth.
You’re covered for a year from the day we finish. If anything is not right with it, ring 0345 464 0079 or email us.
- Place
- Upper Clatford (SP11)
- Region
- Hampshire
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Honest limits
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant will not put right:
- Walls that need new movement joints cut into them
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracks in the bricks or render themselves, away from the joints
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think.
Surfaces we seal
- Façade panels
- Brickwork movement joints
- Concrete & block
- Copings & trims
- Render & cladding joints
- Joints between brick and frames
What happens on the day
We bring everything the job needs with us. After a quick look at the joints together, the area is protected and the work begins. Most jobs take anything from a few hours to several days, depending on the building. In a small place like Upper Clatford, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- Clear the area around the work
- Mention any leaks or damp you’ve noticed
- Keep pets and children clear of the area while we work
Get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that’s easy.
Read more
Walls and rooflines in Upper Clatford
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.
For site and facilities teams at buildings such as Balksbury Junior School, its movement joints, gutters and trims need looking after like any other building’s. For an older house near a landmark such as Church of All Saints, old and new materials meet at the roofline and walls, which is where sealant earns its keep. Letting a property close to Andover station? Then split movement joints are easy to miss on a rental until damp shows inside.
Upper Clatford is about 1 mile south-west of Andover, in Hampshire. Upper Clatford gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Across Hampshire, we cover 683 places, and Upper Clatford is one of them. You can also see our page for Southampton, roughly 20 miles from Upper Clatford.
Here we cover the SP11 postcode area for external mastic. Whether your property is on Sam Whites Hill, Valley Rise and Above Town or a nearby road, our applicators can take on the job. We also cover the places around Upper Clatford: Goodworth Clatford (1 mile south), Wherwell Wood (2 miles south-east), Wherwell (3 miles south-east), Cottonworth (3 miles south-east) and Fullerton (3 miles south-east). Further out, we also cover Winchester (12 miles south-east), Chandler's Ford (15 miles south), Romsey (14 miles south), Hyde (12 miles south-east), Tidworth (8 miles north-west) and Weeke (11 miles south-east).
Around Upper Clatford
In Upper Clatford, that means homes and buildings near John Hanson Community School. The closest station to Upper Clatford is Andover station, about 1.3 miles north. Well-known places in the area include Andover Museum (1.5 miles north-east) and Andover War Memorial Hospital (1.6 miles north). The countryside around Upper Clatford includes Mill Lake and Anton Lakes.
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.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. A flexible sealant bridges the two so neither cracks the other.
Nearby places to Upper Clatford
Also in Upper Clatford
Upper Clatford questions
Is Upper Clatford in your area for external mastic?
Yes, Upper Clatford is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we will send you a clear quote.
Will you come out to Upper Clatford?
Yes, Upper Clatford is covered. 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.
What do you need from me for a quote?
Tell us what needs doing and where. If we need more, we will ask.
Do you do commercial work?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Is it OK to fill a movement joint with cement?
No. Cement or mortar cannot stretch, so the joint stops doing its job. Where a joint has been mortared, it can often be raked out and sealed properly.
Can you seal over the old sealant?
No. We remove every bit of old sealant first.
How long will you be here?
It depends on the size of the job, but as a guide it takes anything from a few hours to several days, depending on the building. We will tell you when we quote.
Why is there a gap in my brick wall?
Most straight vertical gaps in brickwork are movement joints. It lets the bricks expand without cracking and needs a flexible seal, not mortar.
For landlords and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will quote.
Housing providers, facilities teams and property managers book us too in Upper Clatford and across Hampshire. We can quote a run of properties together, and we’re fully insured for the work.
Can I do it myself?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Why it’s worth doing now in Upper Clatford
A failed movement joint lets water into the wall, behind render and cladding. Dealing with it early keeps the repair to the joint, instead of the wall and finishes around it. Where a wall is exposed, as many are in small places like Upper Clatford, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
What you get with us
- Over 20 years’ experience
- Domestic, commercial and hotel work
- Neat joints and a tidy finish
- 12-month guarantee on every job
Take a look at our cost guide and our reviews.