Surrey · England
External & façade joints in Banstead, Surrey
Our applicators work in Banstead on sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Moss and dirt in joints with no sealant left
- Damp patches traced to an open external joint
- Joints where the bead has come unstuck
About our external mastic in Banstead
On houses, flats and commercial buildings across Banstead, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean, sound faces and a controlled depth. Typical jobs include hard, crazed mastic that has stopped moving and movement joints filled with mortar instead of sealant, on copings & trims, joints between brick and frames and brickwork movement joints.
Around Banstead, garages, outbuildings and extensions all add to the joints on the outside of a home. Leaks normally start at a gutter end, a garage door frame or where an extension meets the house.
Whatever the size of the job, it’s backed by our 12-month guarantee.
- Location
- Banstead (SM7)
- Wider area
- Surrey
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Why deal with it now?
An open joint keeps letting water into the wall with every downpour. In cold weather, frost can damage wet brick and render near the open joint, so the problem grows beyond the joint itself. In a smaller place like Banstead, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
What you pay reflects the work, not guesswork. That is why we ask about the job first.
Why choose Mr Mastic in Banstead
- Arbo and Everbuild products
- We never seal over old sealant
- Domestic, commercial and hotel work
- A choice of colours where the product allows
Read our cost guide or customer reviews.
Landlord and commercial work in Banstead
If you manage several properties in or around Banstead, several properties can be quoted together. Send us the addresses and the work at each.
We work for landlords and agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
The process
There isn’t much for you to do on the day. Show us the job and we will take it from there. The work itself takes a few hours for a handful of joints, longer for a whole elevation from start to finish. In a smaller place like Banstead, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs 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
- Move anything stored near the joints
- Let us know about parking restrictions
- Keep children and pets away from the work area
Getting a quote
We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or email us and describe the job and send pictures if you have them.
Read more
Can I do it myself?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
If you do try it yourself, take your time over the 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.
Nearby places to Banstead
More services for Banstead
Outside joints around Banstead
With historic houses such as Nonsuch Mansion (about 2.7 miles north-west) nearby, there’s older building stock in the area around Banstead as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. 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.
In the older streets around Church of All Saints, the joints between older walls, newer extensions and the roofline need a sealant that can move. Schools such as St Anne's Catholic Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing. Letting a property close to Banstead station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Banstead is about 3 miles west of Coulsdon, in Surrey. Jobs in Banstead get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Banstead is one of 395 towns and villages in Surrey where we work. Our London page covers work nearby (13 miles or so).
Every address in SM7 is within our area for external mastic. Local streets include High Street, Glenfield Road and Highview Path, and we cover them all. Banstead sits on or near the A217 and A2022, so getting to you is simple. We also cover the places around Banstead: Woodmansterne (1 mile south-east), Shanklin Village (2 miles north), Chipstead (2 miles south-east), Little Woodcote (2 miles north-east) and Woodcote Green (2 miles north-east). We also work in nearby towns such as Epsom (3 miles west), Horley (10 miles south), Redhill (6 miles south), Ewell (3 miles north-west), Reigate (6 miles south) and Walton-on-Thames (10 miles north-west).
Local landmarks in Banstead
Around Banstead, our work takes us to homes and buildings near The Woolpack pub, Fames Rough and Priory Preparatory School, among other places. The nearest railway station is Banstead station, roughly 0.7 miles north-west. Other landmarks nearby include Walton on the Hill (3.6 miles south-west) and The Ashley Centre (3 miles west). For a walk, there’s Colley Hill and Cuddington Meadows.
What the job involves on each surface
Copings and trims
Coping joints that leak let water straight down into the wall. Resealing them is a small job that protects a lot.
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. We prime where the sealant needs it before the bead.
What affects the quote in Banstead
We do not publish a price list, because no two jobs are the same. What we look at:
- How much old sealant there is and how hard it is to remove
- Any working-time requirements on site
- The number and length of the joints
- How easy the joints are to reach
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What we need to know
To make quoting easier, please include:
- Where the job is, and your postcode
- Access, such as stairs, a lift or height
- The type of property
- Pictures of the joints, sent by email
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Banstead questions
Do you cover smaller places like Banstead?
Yes. Banstead 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.
Can you help a landlord with a rental near Banstead station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before work begins.
Do I need to be at home?
Access is agreed with you when the job is booked. Indoors, that usually means someone at home.
What information do you need?
Tell us what needs doing and where, with pictures by email if possible. We will ask anything else we need to know.
Why do you put foam in the joint first?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. That way it bonds to the two sides only and can stretch.
Are you fully insured?
Yes. We are fully insured, and we’ve been doing sealant work for more than 20 years.
Is there a guarantee?
Yes: twelve months. If there’s a problem with our work in that time, tell us and we’ll put it right.
Are you an approved applicator?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Tell anyone working on the walls about the movement joints
- Look over the joints every year, ideally after winter
- Get split or bare joints resealed while the damage is small
- Leave the joints unpainted unless we have said otherwise
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead over time.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.