Surrey · England
Shepperton Green External Mastic
External mastic for Shepperton Green, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaking joints around cladding and façade panels
- Damp patches traced to an open external joint
- Moss and dirt in joints with no sealant left
External mastic for homes and businesses in Shepperton Green
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement. If you have panel joints letting water in and gaps where render, brick and frames meet, we can put it right, on brickwork movement joints, façade panels and concrete & block alike.
In and around Shepperton Green, older properties sit alongside newer ones, each with its own outside joints. Older homes need their gutter and trim joints kept tight, newer ones their movement joints.
Every job is covered by our one-year guarantee, wherever you are in Surrey.
- Place
- Shepperton Green (TW17)
- Region
- Surrey
- Cover
- 12 months on all our work
- Price
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
When something else is needed
We’ll always be straight with you, so here’s what sealant can’t fix:
- Loose or hollow render, which needs re-rendering
- Walls that need new movement joints cut into them
- Damp that is not coming from the joint
If you’re not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Where we work in Shepperton Green
- Brickwork movement joints
- Joints between brick and frames
- Façade panels
- Copings & trims
- Concrete & block
- Render & cladding joints
DIY versus a professional finish
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
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 fails, we can still redo it.
Places near Shepperton Green
Other services in Shepperton Green
How to look after the new joints
So the new joints stay in good condition:
- Keep water from gutters off the wall
- Ask before painting over external sealant
- Do not let climbing plants root in the sealant
- Act on the first splits you see
Don’t let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
Quotes for external mastic in Shepperton Green
You’ll get a clear quote before any work starts. It’s based on:
- The number and length of the joints
- Which sealant suits the joint
- Whether the work is at height
- How much old sealant there is and how hard it is to remove
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, call 0345 464 0079 or email us for an honest opinion and a quote.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- What’s wrong with the joints now
- Photos by email, if that’s easy
- Roughly how big the job is
- The type of property
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved.
Leave it or put it right?
Mortar or ordinary filler might look like a quick way to close an open joint, but it locks the joint solid. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. Homes in smaller places like Shepperton Green can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
Why book with us
- Arbo and Everbuild products
- Colour picked to suit the job
- Full insurance on every job
- Experience in homes, commercial sites and hotels
Take a look at our cost guide or our reviews.
How it works
You do not need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the work takes anything from a few hours to several days, depending on the building in most cases. For a job in Shepperton Green, 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 inspect the joints and agree which need resealing and how they’ll be reached.
- We cut out the failed sealant and rake out any dirt or growth.
- Both sides are cleaned back to sound material and primed if needed.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Keep children and pets away from the work area
- Where the joints are inside, avoid wetting them before we arrive
- Mention any tricky access
Getting a quote
There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To arrange one, call 0345 464 0079 or send us an email.
Advice
Questions from Shepperton Green
Can you do external mastic in Shepperton Green?
Yes, Shepperton Green is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or drop us an email and let us know what needs doing.
Is Shepperton Green within the area you cover?
Yes, Shepperton Green is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you use backing rod?
The foam is closed-cell backing rod. It stops the sealant going in too deep and bonding to three sides so it can flex with the joint.
Do you guarantee your work?
Yes, always. There’s a 12-month guarantee on every job, large or small.
Can I do it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
Will the new joint stand out?
The sealant colour is picked to suit the wall so the joint blends in. Exterior sealants come in a good range of colours.
What’s an expansion joint in brickwork?
It’s a deliberate gap that lets the wall expand and contract without cracking. It should be filled with flexible sealant, never mortar.
Do you take out the old sealant first?
Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.
Different surfaces, different methods
Joints between dissimilar materials
Wherever two materials meet, they move differently. We seal the joint with a flexible exterior sealant so the movement is taken up.
Copings and trims
Coping joints that leak let water straight down into the wall. Resealing them is a small job that protects a lot.
What external mastic looks like in Shepperton Green
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Botleys Mansion (about 3.6 miles south-west) are a reminder that the area around Shepperton Green 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.
Managing a site like Saxon Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Rented homes near Shepperton station change hands often, and split movement joints are easy to miss on a rental until damp shows inside. If you live in an older home near Church of St Mary Magdalene, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Shepperton Green is about 2 miles north of Weybridge, in Surrey. We carry out external mastic for householders, landlords and businesses in Shepperton Green, as part of our work across Surrey. Across Surrey, we cover 395 places, Shepperton Green among them. You can also see our page for London, about 17 miles away.
We cover every part of the TW17 postcode area for external mastic and the streets around it. Whether your property is on Laleham Road, Roseacre Close and Squire's Road or a nearby road, our applicators can take on the job. We also cover the places around Shepperton Green: Littleton (1 mile north-west), Charlton (1 mile north-east), Upper Halliford (1 mile east), Littleton Common (2 miles north-east) and Laleham (2 miles north-west). We also work in nearby towns such as Guildford (12 miles south-west), Woking (8 miles south-west), Camberley (12 miles west), Epsom (9 miles south-east), Ewell (9 miles east) and Egham (4 miles north-west).
Landmarks near Shepperton Green
We work in homes and buildings around Penton Park, Thamesmead School and The Anchor pub and the streets around them. For rail, the closest station is Shepperton station, roughly 0.7 miles south-east. Nearby you will also find No. 2 New Zealand General Hospital (1.8 miles south-east) and Kempton Steam Museum (3 miles north-east). For a walk, there’s St Ann's Hill and Ferris Meadow Lake.