Kent · England
Boughton Malherbe External Mastic
External mastic for Boughton Malherbe and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Brick movement joints where the sealant has split
- Panel joints letting water in
- Hard, crazed mastic that has stopped moving
How we handle external mastic in Boughton Malherbe
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. We are often asked to deal with weathered mastic that no longer stretches and weeds or debris growing in open joints, across brickwork movement joints, render & cladding joints and copings & trims.
Older homes in small places like Boughton Malherbe may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water generally gets in.
All our work is covered by our 12-month guarantee, wherever you are in Kent.
- Place
- Boughton Malherbe (ME17)
- Wider area
- Kent
- Cover
- One year on every job
- Quote
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY versus a professional 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.
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.
Boughton Malherbe: your questions answered
Do you work for landlords with property near Lenham station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear price.
Can you do external mastic in Boughton Malherbe?
Yes. We work across London and the South East, and Boughton Malherbe is part of that. You can call 0345 464 0079 or email us and let us know what needs doing.
Do you take out the old sealant first?
Yes, always, and completely. New sealant won’t bond properly to old, so the joint is cleaned back first.
Do I need to be at home?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Do you work for hotels and businesses?
Yes. We’ve worked for hotels, offices and other businesses, and we are fully insured.
Why do you put foam in the joint first?
Backing rod goes into deeper joints as a matter of course. It sets the sealant depth and prevents three-sided bonding so the bead can stretch.
Where do you work from?
We are a Crawley-based firm. Our area covers South East England, London and Scotland.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Do you need external mastic in Boughton Malherbe?
UV, rain and frost all age exterior sealant. In time it goes hard, crazes on the surface and stops stretching, so the next time the wall moves, it splits or pulls away.
These are the problems we’re asked about most:
- Failed seals between different materials
- Brick movement joints where the sealant has split
- Rain getting behind render or cladding at a joint
- Plants rooting in failed movement joints
Managing a site like Platts Heath Primary School? Then larger buildings have long runs of movement joint that eventually need resealing.
Questions to ask before you book
- What guarantee comes with the work
- Whether all the old sealant comes out first
- What happens if the job turns out different
- What insurance they hold
Honest limits
A few problems are outside what sealant work can do:
- Damp that is not coming from the joint
- Structural movement, which needs a surveyor or engineer
- Adding movement joints to masonry that has none
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think before booking.
Surfaces we seal
- Copings & trims
- Façade panels
- Concrete & block
- Joints between brick and frames
- Brickwork movement joints
- Render & cladding joints
What the job involves on each surface
Render joints
Render has movement joints and stop beads that need sealing. They’re resealed in a sealant that suits the render.
Copings and trims
Metal and stone copings both move with temperature, so a flexible sealant suits them best in all weathers.
Also near Boughton Malherbe
More services for Boughton Malherbe
Why act early in Boughton Malherbe
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. Around Boughton Malherbe, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why book with us
- Trusted Arbo and Everbuild sealants
- Approved under the ARBOMaster scheme
- We never seal over old sealant
- Over 20 years’ experience
Read our cost guide or our reviews.
Looking after it afterwards
So the new joints stay in good condition:
- Fix overflowing gutters above sealed joints
- Do not let climbing plants root in the sealant
- Avoid pressure-washing directly into sealant joints
- Keep movement joints as flexible joints, not mortar
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges 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.
Outside joints around Boughton Malherbe
With historic houses such as Leeds Castle (about 3.6 miles north-west) nearby, there’s older building stock in the area around Boughton Malherbe as well as newer homes. In older buildings, 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, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you live in an older home near Church of St Nicholas, old and new materials meet at the roofline and walls, which is where sealant earns its keep. Letting a property close to Lenham station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Boughton Malherbe is about 8 miles south-east of Maidstone, in Kent. Boughton Malherbe gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Boughton Malherbe is one of 922 places in Kent where we work for external mastic. For nearby work, see our Chelmsford page, about 37 miles away.
Here we cover the ME17 postcode area for external mastic. We also cover Liverton Street (1 mile north-west), Grafty Green (1 mile south-west), Platt's Heath (1 mile north-west), Sandway (1 mile north) and Broadstone (1 mile south-west). Further out, we also cover Maidstone (8 miles north-west), Ashford (9 miles south-east), Sittingbourne (9 miles north), Faversham (11 miles north-east), Minster (15 miles north) and Kings Hill (13 miles west).
What’s near Boughton Malherbe
We work in homes and buildings around Kiln Wood, The Lenham School and The Kings Head Public House and the streets around them. The nearest railway station is Lenham station, about 1.5 miles north-east of the centre. Other landmarks nearby include Coldbridge Castle (1.1 miles south) and The Dog Collar Museum (3.5 miles north-west).
What happens on the day
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes a few hours to a few days, depending on the length of joint and the access. In a small place like Boughton Malherbe, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we look over the joints with you, agree which to renew and talk through access.
- We cut out the failed sealant and rake out any dirt or growth.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Tell us if parking is tricky
- Try not to wet indoor joints just before the visit
- Mention any leaks or damp you’ve noticed
Ask for a quote
For external mastic in Boughton Malherbe, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.