Kent · England
External Mastic in Claygate Cross
Professional external mastic in and around Claygate Cross, with old sealant always removed completely and a 12-month guarantee.
- Sealant pulling away from one side of the joint
- Panel joints letting water in
- Moss and dirt in joints with no sealant left
How we handle external mastic in Claygate Cross
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement where a rigid filler would soon crack. Common call-outs are for cracked joints where brick meets render or frames and brick movement joints where the sealant has split, across brickwork movement joints, concrete & block and copings & trims.
In a village or hamlet like Claygate Cross, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
The work is covered for a year after we finish. If there’s a problem with it, please ring 0345 464 0079 or drop us an email.
- Location
- Claygate Cross (TN15)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Walls and rooflines in Claygate Cross
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. Historic houses like Old Soar Manor (about 0.9 miles south-east) are a reminder that the area around Claygate Cross has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For site and facilities teams at buildings such as Borough Green Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. For landlords with property near Borough Green & Wrotham station, outside joints that have cracked can let damp into a rental, so check them between lets.
Claygate Cross is about 5 miles east of Sevenoaks, in Kent. For external mastic in and around Claygate Cross, please phone 0345 464 0079 or drop us an email for a quick quote. We are based in Crawley and cover Kent, Claygate Cross included. Across Kent, we cover 922 places, and Claygate Cross is one of them. We also work in London, around 23 miles away.
All of TN15 is within our area for external mastic. We cover properties on Claygate Cross, Basted Lane and Winfield Lane. Neighbouring places we cover for external mastic include Crouch (1 mile east), Basted (1 mile north-west), Borough Green (1 mile north), Plaxtol (1 mile south) and Platt (1 mile north-east). Larger places within reach include Maidstone (9 miles east), Dartford (12 miles north), Sevenoaks (5 miles west), Royal Tunbridge Wells (10 miles south), Gravesend (11 miles north) and Tonbridge (5 miles south).
Local landmarks in Claygate Cross
Around Claygate Cross, our work takes us to homes and buildings near Wrotham School, The Chequers Inn and Ivy Hatch Nature Reserve. The nearest railway station is Borough Green & Wrotham station, about 1.2 miles north of the centre. Other landmarks nearby include Ightham Court (1.7 miles north-west) and Beechin Wood Archery Museum (1.1 miles north-east).
Your questions about external mastic in Claygate Cross
Do you cover Claygate Cross for external mastic?
Yes, Claygate Cross is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.
Can you help a landlord with a rental near Borough Green & Wrotham 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 send us an email with the details for a clear quote.
Can you do several jobs on one visit?
Yes. Several rooms, windows or areas can go on one quote.
How much does external mastic cost in Claygate Cross?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before work begins.
Do you remove the old sealant?
Yes, every time. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Can you seal joints between render and window frames?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. The colour is chosen to suit.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Will the new joint stand out?
We aim for a joint that suits the wall rather than one that jumps out. We’ll talk through colour options before any work starts from the range available.
Signs you need external mastic in Claygate Cross
Sometimes a movement joint was filled with mortar or a rigid filler, often by someone who didn’t know what it was for. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
The problems people usually mention when they call include:
- Damp patches traced to an open external joint
- Failed seals between different materials
- Joints pointed up with cement by mistake
- Movement joints with cracked, split or missing sealant
For an older house near a landmark such as The Church of the Good Shepherd, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Before booking anyone
- Which colour the sealant will be
- Is the old sealant removed completely?
- What preparation is included
- What insurance they hold
Looking after it afterwards
After the cure time, these simple habits help:
- Leave the joints unpainted unless we’ve said otherwise
- Deal with leaking gutters that soak the joints below
- Tell anyone working on the walls about the movement joints
- Walk round the building once a year and look at the joints
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead and let water in behind.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
What happens on the day
The work is kept neat and contained to the area we are working on. Expect the work to take a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Claygate Cross, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- 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.
How to prepare
- Mention any parking rules near the property
- For business premises, tell us about site rules or sign-in
- Tell us about any previous sealing or DIY attempts
Ask for a quote
To get a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. You’ll have a clear quote before we start.
Related advice
Why act early in Claygate Cross
Done well, a resealed joint is a neat, straight line that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner, so it pays to do it properly once. Where a wall is exposed, as many are in small places like Claygate Cross, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why Claygate Cross clients choose us
- White, clear, grey or another colour, product permitting
- You choose the colour before work begins
- We’re fully insured
- Every job guaranteed for a year
Take a look at what affects the cost and our reviews.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
When something else is needed
It helps to know what we can’t do too:
- Cracking across the wall rather than at a joint
- 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 before booking.
Surfaces we seal
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
- Façade panels
- Brickwork movement joints
- Concrete & block
What else we do in Claygate Cross
What the job involves on each surface
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. We cut out the old sealant and reseal with a product suited to both surfaces.
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. They’re resealed over backing rod with a low-modulus sealant coloured to suit the wall.