Surrey · England
Shepperton External Mastic
Movement joints in Shepperton need attention? We cut out the old, prepare the joints and apply the right sealant.
- Leaking joints around cladding and façade panels
- Old sealant gone brittle and cracked
- Rain getting behind render or cladding at a joint
About our external mastic in Shepperton
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, so once it splits or hardens, the joint stops working and water gets in. We work on render & cladding joints, copings & trims and brickwork movement joints, and the jobs we see most are sealant that has lost its bond to the brick or render and rigid filler in a joint that should flex.
Around Shepperton, garages, outbuildings and extensions all add to the joints on the outside of a home. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
Your job is guaranteed for a year, as with all our work.
- Location
- Shepperton (TW17)
- Wider area
- Surrey
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Act on the first splits you see
- Leave the joints unpainted unless we have said otherwise
- Point out the joints to other trades
- Don’t let climbing plants root in the sealant
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead over time.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Towns and villages near Shepperton
Other services in Shepperton
FAQs for Shepperton
Do you cover Shepperton for external mastic?
Yes, Shepperton is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or send us an email and tell us what needs doing.
Will you come out to Shepperton?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
How much does external mastic cost in Shepperton?
Every job is different, so each one gets its own quote. To get one, call 0345 464 0079 or drop us an email and let us know what needs doing and where.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
When is the sealant fully cured?
Cure times vary by product and the conditions. Before we leave, we’ll tell you the cure time.
Is the work guaranteed?
Yes. Every job comes with our one-year guarantee.
Do you use backing rod?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. Then the sealant bonds to two faces and can move.
Walls and rooflines in Shepperton
Historic houses like The Homewood (about 3.8 miles south-east) are a reminder that the area around Shepperton has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. 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.
If you live in an older home near Church of St Nicholas, the joints between older walls, newer extensions and the roofline need a sealant that can move. Rented homes near Shepperton station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Shepperton is about 1 mile north of Weybridge, in Surrey. Whether you’re in the middle of Shepperton or further out, we cover external mastic for every kind of property. Across Surrey, we cover 395 places, and Shepperton is one of them. London is on our list too, around 17 miles away.
We work across the TW17 postcode area for external mastic. Local streets include High Street, Station Road and Manygate Lane, all of which we cover. Shepperton is on the B3366, so it’s easy for us to get to. We also cover Weybridge (1 mile south), Walton-on-Thames (2 miles south-east), St George's Hill (2 miles south), Burwood Park (2 miles south) and Hersham (2 miles south-east). Within a short drive, we also cover Guildford (12 miles south-west), Woking (8 miles south-west), Camberley (13 miles west), Epsom (8 miles south-east), Ewell (9 miles east) and Egham (5 miles north-west).
Near you in Shepperton
Typical jobs here are in homes near Sunbury Park, The Anchor pub and St Nicholas CofE Primary School, among other places. There’s a railway station in Shepperton itself: Shepperton station. Nearby you’ll also find No. 2 New Zealand General Hospital (0.9 miles south-east) and Kempton Steam Museum (2.8 miles north-east). For a walk, there’s Kempton Park Reservoirs and St Ann's Hill.
Landlords, agents and businesses in Shepperton
We work for letting agents and landlords as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured.
What we do, step by step
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, carry out the job and clear up. It normally takes a few hours to a few days, depending on the length of joint and the access. For a job in Shepperton, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- 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.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Mention any leaks or damp you’ve noticed
- For business premises, tell us about site rules or sign-in
- Try not to wet indoor joints just before the visit
How to get a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work before giving you a price.
Advice
Do you need external mastic in Shepperton?
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.
Keep an eye out for these signs:
- Plants rooting in failed movement joints
- Failed sealant between panels on a façade
- Sealant that has lost its bond to the brick or render
- Failed seals between different materials
Schools such as Thamesmead School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Comparing quotes
- What the cure time is
- Is the old sealant removed completely?
- Whether they’re fully insured
- Is VAT in the price?
What the job involves on each surface
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. We reseal their joints with backing rod and a flexible product.
Joints between dissimilar materials
Different materials may need different primers. We prepare both faces so the sealant bonds properly.
Why deal with it now?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. A stiffer product can damage the joint edge as it fails. Around Shepperton, water from a failed joint in an older home can soak into timber and plaster, and that’s a much bigger job than renewing the sealant.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why choose Mr Mastic in Shepperton
- Full insurance on every job
- Trusted Arbo and Everbuild sealants
- Over 20 years’ experience
- Old sealant always removed completely
See what affects the cost and our reviews.
What affects the quote in Shepperton
Call for a quick quote. The main things that affect it are:
- The number and length of the joints
- Any working-time requirements on site
- Mould in or behind the old joints
- How many areas need sealing
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Asking for a quote
When you contact us, it’s useful to know:
- How we’d reach the joints
- If someone has resealed it before
- The type of property
- The rough size of the job
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or email us.