Surrey · England
West Clandon External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in West Clandon and across Surrey. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Old sealant gone brittle and cracked
- Joints with sealant missing in places
- Weeds or debris growing in open joints
Walls and rooflines in West Clandon
Historic houses like Clandon Park (about 1.2 miles south) are a reminder that the area around West Clandon has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you live in an older home near Church of St Peter and St Paul, old and new materials meet at the roofline and walls, which is where sealant earns its keep. Letting a property close to Clandon station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
West Clandon is about 3 miles north-east of Guildford, in Surrey. Every kind of property in West Clandon is covered for external mastic. The work is guaranteed for a year. We cover 395 towns and villages across Surrey, large and small. There’s also a page for Crawley, about 17 miles away.
Postcode districts we cover here for external mastic: GU4. Streets in the area include The Street, Lime Close and Lime Grove, all of which we cover. If you are just outside West Clandon, we cover Burntcommon (1 mile north), Send Marsh (2 miles north), Merrow (2 miles south-west), Send (2 miles north-west) and Burpham (2 miles west). Within a short drive, we also cover Guildford (3 miles south-west), Woking (5 miles north-west), Camberley (11 miles north-west), Epsom (11 miles north-east), Redhill (15 miles east) and Farnham (13 miles west).
What’s near West Clandon
In West Clandon, that means homes and buildings near The Bulls Head Public House and St Peter's Catholic School. West Clandon has its own railway station: Clandon station. Other landmarks nearby include Surrey Infantry Museum (1.3 miles south-west) and St. Luke’s Hospital (3.3 miles south-west). The countryside around West Clandon includes Papercourt Marshes and St Martha's Hill.
How we handle external mastic in West Clandon
We are ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it, and we don’t skip that step. Typical jobs include joints with sealant missing in places and failed sealant between panels on a façade, across render & cladding joints, copings & trims and brickwork movement joints.
Around West Clandon, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- West Clandon (GU4)
- Wider area
- Surrey
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Leave it or put it right?
The longer a joint stays open, the more water the wall takes in. In cold weather, frost can damage wet brick and render around the joint, so the damage spreads beyond the joint. Around West Clandon, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or send us an email.
Why book with us
- White, clear, grey or another colour, product permitting
- A 12-month guarantee on all work
- 180+ five-star Google reviews
- Anti-fungal silicone where joints get wet
Take a look at what affects the cost or what customers say.
How the job changes by surface
Cladding and façade panels
Metal and composite panels move a lot with temperature, so the joints work hard every day. The sealant is chosen with that in mind.
Concrete and blockwork
The face of concrete or block is often dusty, so cleaning and priming matter. A primer goes on where the product requires one.
West Clandon questions
Is West Clandon within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you work for landlords with property near Clandon station?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before any work starts.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Can you work on commercial sites?
Yes. Larger jobs can be planned room by room or area by area.
Can you match the colour of my brickwork?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We pick the one that suits your wall best.
Should I point up the gap in my brickwork?
No, not where the gap is a movement joint. Pointing it stops it working, and the wall may crack nearby. A flexible sealant is the right fill.
What does external mastic cost?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before work begins.
Is it worth trying it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
Places near West Clandon
What else we do in West Clandon
When it is not the sealant
We won’t take on work that will not last, so here’s what sealant can’t put right:
- Loose or hollow render, which needs re-rendering
- Adding movement joints to masonry that has none
- Subsidence or other structural problems
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Brickwork movement joints
- Façade panels
- Concrete & block
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
What we do, step by step
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. In total, it generally takes a few hours to a few days, depending on the length of joint and the access. In a small place like West Clandon, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Mention any parking rules near the property
- Clear the area around the work
- Keep children and pets away from the work area
How to get a quote
Want a quote for external mastic? Please phone 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.
Related advice
DIY sealant or a professional job?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
What affects the cost of external mastic
We don’t publish a price list, because no two jobs are the same. What we look at:
- Working hours on commercial sites
- How easy the joints are to reach
- How many rooms, windows or areas are involved
- The product the joint needs
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
Helping us quote
To help us quote quickly, let us know:
- Whether it has been sealed before
- How we’d reach the joints
- Photos by email, if that is easy
- What’s wrong with the joints now
We don’t publish a price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, phone 0345 464 0079 or send us an email.
Common problems we fix in West Clandon
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.
The most common problems we see are:
- Joints pointed up with cement by mistake
- Gaps where render, brick and frames meet
- Hard, crazed mastic that has stopped moving
- Failed sealant between panels on a façade
For site and facilities teams at buildings such as Clandon CofE Aided Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Before booking anyone
- Who does the work, and how experienced they are
- Whether you can choose the colour
- How the joint is cleaned and prepared
- Whether all the old sealant comes out first