Surrey · England
External Mastic in Little Bookham
External mastic across Little Bookham and nearby, with old sealant always removed completely and a 12-month guarantee.
- Moss and dirt in joints with no sealant left
- Sealant pulling away from one side of the joint
- Water getting into walls through failed joints
When it is not the sealant
We will always be straight with you, so here’s what new sealant will not do:
- Adding movement joints to masonry that has none
- Structural movement, which needs a surveyor or engineer
- Render that’s blown, hollow or coming away
If you’re not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer.
Surfaces we seal
- Façade panels
- Copings & trims
- Joints between brick and frames
- Concrete & block
- Brickwork movement joints
- Render & cladding joints
External mastic for homes and businesses in Little Bookham
A movement joint is a deliberate break that lets a wall expand and contract. The sealant in it has to stretch and squeeze for years, and when it fails, the wall takes the strain and water finds a way in. If you are dealing with sealant that has lost its bond to the brick or render and weeds or debris growing in open joints, we can put it right.
Around Little Bookham, garages, outbuildings and extensions all add to the joints on the outside of a home. Leaks generally start at a gutter end, a garage door frame or where an extension meets the house.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Little Bookham (KT23, KT24)
- Wider area
- Surrey
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Common problems we fix in Little Bookham
Some movement joints have been pointed up with mortar by mistake. The joint can’t move, so the wall cracks somewhere else instead.
Most people get in touch when they notice one of these:
- Joints where the bead has come unstuck
- Failed seals between different materials
- Leaking joints around cladding and façade panels
- Brick movement joints where the sealant has split
If you look after a building such as Howard of Effingham School, larger buildings have long runs of movement joint that eventually need resealing.
What your quote should include
- Whether the sealant suits the joint
- Whether VAT is included
- What happens if the job turns out different
- When the joint can take water or movement
For landlords and businesses
We also work for property managers and facilities teams in Little Bookham and across Surrey. We can quote a run of properties together.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
What affects the cost of external mastic
Call for a quick quote. The main things that affect it are:
- Access and height
- Any working-time requirements on site
- The number of rooms or windows
- The size of the job
The cost depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
To help us quote quickly, please include:
- Photos by email, if that’s easy
- How we’d reach the joints
- The address or postcode of the job
- What the problem is, such as mould, gaps, leaks or cracking
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, phone 0345 464 0079 or drop us an email.
How the visit works
You do not need to clear the whole room or building, only the area right around the joints. Everything nearby is protected, and the work takes anything from a few hours to several days, depending on the building for a typical job. For a job in Little Bookham, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- Each joint is checked and the colour of the new sealant agreed.
- 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.
How to prepare
- Let us know about earlier repairs to the joints
- Plan for the work area to be out of bounds to pets and children
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
To get a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. You’ll have a clear quote before work begins.
Read more
Outside joints around Little Bookham
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Polesden Lacey (about 1.1 miles south-east) nearby, there’s older building stock in the area around Little Bookham as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
For an older house near a landmark such as Church of St Lawrence, the joints between older walls, newer extensions and the roofline need a sealant that can move. Rented homes near Bookham station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Little Bookham is about 3 miles south-west of Leatherhead, in Surrey. Wherever you are in the KT23 postcode area, our applicators can take on external mastic. 395 places in Surrey are on our list, large and small. Our Crawley page covers work nearby, about 14 miles away.
Here we cover the KT23 and KT24 postcode area for external mastic. If you need external mastic at a property on Orchard Gardens, Guildford Road and Lindens Close or a nearby road, we can help. Neighbouring places we cover for external mastic include Great Bookham (1 mile north-east), Fetcham (2 miles north-east), Ranmore Common (2 miles south-east), Westhumble (3 miles south-east) and Mickleham (3 miles east). Larger places within reach include Guildford (8 miles west), Woking (9 miles west), Camberley (15 miles west), Epsom (7 miles north-east), Horley (11 miles south-east) and Redhill (10 miles east).
Near you in Little Bookham
We work in homes and buildings around St Lawrence Primary School, Manor House School and The Queen Stage pub. The nearest railway station is Bookham station, roughly 1.4 miles north. Nearby you’ll also find Betchworth Castle (4.6 miles south-east) and Headley Court (5.1 miles east). Green spaces nearby include Combe Bottom and Boldermere Lake.
Why deal with it now?
Water gets in through a failed movement joint and can run behind render or cladding. Dealing with it early keeps the repair to the joint, rather than the wall around it. Around Little Bookham, water from a failed joint in an older home can soak into timber and plaster, and that is a much bigger job than renewing the sealant.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we’ll explain what it covers.
Why us?
- Arbo and Everbuild products
- Approved under the ARBOMaster scheme
- One-year guarantee on every job
- Homes, businesses and hotels
Take a look at our cost guide or customer reviews.
How the job changes by surface
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.
Joints between dissimilar materials
Different materials may need different primers. Both surfaces are cleaned and primed as the product requires.
Little Bookham: your questions answered
Do you cover Little Bookham for external mastic?
Yes, Little Bookham is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and let us know what needs doing.
Do you work for landlords with property near Bookham station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can call 0345 464 0079 or email us with the details for a clear quote.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Little Bookham.
How do I get a quote for external mastic in Little Bookham?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
How long does the job take?
Typically it takes a few hours to a few days, depending on the length of joint and the access. Bigger jobs take longer, and we’ll say how long yours will take.
Should I try DIY first?
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.
Are you fully insured?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
Can you match the colour of my brickwork?
The sealant colour is picked to suit the wall so the joint blends in. Exterior sealants come in a good range of colours.