Buckinghamshire · England
External Mastic in East Claydon
Professional external mastic in and around East Claydon, with old sealant always removed completely.
- Old sealant gone brittle and cracked
- Damp patches traced to an open external joint
- Brick movement joints where the sealant has split
How we handle external mastic in East Claydon
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we’ll confirm what’s needed to reach them safely. We are often asked to deal with rigid filler in a joint that should flex and failed seals between different materials, on concrete & block, joints between brick and frames and copings & trims.
In a village or hamlet like East Claydon, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
All our work is covered by a one-year guarantee, wherever you are in Buckinghamshire.
- Place
- East Claydon (MK18)
- Wider area
- Buckinghamshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Different surfaces, different methods
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. They’re resealed over backing rod with a low-modulus sealant in a colour to suit the brick.
DIY sealant or a professional job?
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.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Leave it or put it right?
Sealing over the top of old mastic doesn’t hold for long. New sealant doesn’t bond well to old, weathered sealant, so we always take the old sealant out. Around East Claydon, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first.
What you get with us
- A 12-month guarantee on all work
- Fully insured
- Neat joints and a tidy finish
- Anti-fungal sanitary silicone in wet areas
See our cost guide or what customers say.
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Avoid pressure-washing directly into sealant joints
- Ask before painting over external sealant
- Act on the first splits you see
- Deal with leaking gutters that soak the joints below
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Common questions in East Claydon
Will you come out to East Claydon?
Yes, East Claydon is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Is there a guarantee on external mastic in East Claydon?
All our work, in East Claydon and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
Do you work for landlords and businesses?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels across Buckinghamshire.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
What’s an expansion joint in brickwork?
It’s a deliberate gap that lets the wall expand and contract without cracking. It’s sealed with a flexible sealant, not mortar.
Can you match the colour of my brickwork?
The sealant colour is picked to suit the wall. There’s a wide choice of exterior colours.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply call 0345 464 0079 or email us.
Is it OK to fill a movement joint with cement?
No, not if it’s a movement joint. Filling it with mortar defeats its purpose and can lead to cracking. We will reseal it with a flexible sealant.
Places near East Claydon
What else we do in East Claydon
For landlords and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
How we quote for external mastic
Jobs vary more than people expect. What affects the quote:
- The old material and how stubborn it is
- How many rooms, windows or areas are involved
- When we can work, for business premises
- How easy the joints are to reach
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.
What we need to know
What to tell us when you ask for a quote:
- The problem you’ve noticed
- How many joints, rooms or windows are involved
- The address or postcode of the job
- The type of property
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work.
The process
We bring everything the job needs with us, so there’s nothing for you to buy. After a quick look at the joints together, we protect the area and start. It normally takes a few hours to a few days, depending on the length of joint and the access. In a small place like East Claydon, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- 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.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- For indoor joints, keep the area dry beforehand if you can
- Tell us if parking is tricky
How to get a quote
For a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Advice
External mastic in East Claydon: local notes
With historic houses such as Claydon House (about 1.2 miles west) nearby, there’s older building stock in the area around East Claydon as well as newer homes. 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.
For an older house near a landmark such as Church of St Mary, older walls, gutters and the joints where extensions meet them need a flexible sealant. For site and facilities teams at buildings such as East Claydon Church of England School, larger buildings have long runs of movement joint that eventually need resealing.
East Claydon is about 6 miles south-east of Buckingham, in Buckinghamshire. Wherever you are in the MK18 postcode area, we can carry out external mastic at your property. We cover 263 towns and villages across Buckinghamshire. Our Oxford page covers work nearby (18 miles or so).
Here we cover the MK18 postcode area for external mastic. If you need external mastic at a property on Sandhill Road, Hinton Close and Briary Court or a nearby road, our applicators can take on the job. We also cover the places around East Claydon: Botolph Claydon (1 mile south), Middle Claydon (1 mile west), Steeple Claydon (2 miles west), Adstock (3 miles north) and Padbury (3 miles north). Further out, we also cover Aylesbury (9 miles south-east), Buckingham (6 miles north-west), Elmhurst (9 miles south-east), Southcourt (10 miles south-east), Princes Risborough (14 miles south) and Haydon Hill (8 miles south-east).
Around East Claydon
Around East Claydon, our work takes us to homes and buildings near Sir Thomas Fremantle School. Well-known places in the area include Buckingham Community Hospital (5.9 miles north-west) and Bolbec Castle (4.9 miles south-east). The countryside around East Claydon includes Calvert Jubilee.